Constructions Standards Checklists

CONSTRUCTION STANDARDS CHECKLISTS 2025 EDITION

CONFIDENTIAL - the information contained herein is proprietary to Century Communities and is not to be shared with anyone outside the organizations. This includes any reproduction of the entire document or portions, including making any physical or digital copies.

TABLE OF CONTENTS

Foundations

5 5 6 7 8 9

Concrete General

Conventional Slab on Grade

Post-Tensioned Crawlspaces Basements

Framing

11 11

Non-Structural

Structural Plumbing

11

15 15 17 17 19 19 20 23 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 41 41 42 45 45 46 47

PEX Installation

Electrical

Receptacle Wiring

HVAC

Flex Duct Sheet Metal

Drainage Plane

Housewrap General Housewrap Penetrations Housewrap Windows Housewrap Doors Black Paper General Black Paper Penetrations Black Paper Window

Black Paper Recessed Window

Black Paper Doors T-Ply General T-Ply Penetrations T-ply Windows Block Wall General Block Wall Windows Black Wall Doors T-Ply Doors

Air Barrier Air Sealing

Draft Stopping

Showers

Solid Surface Shower Stall

Tile Shower Stall – Sheet Membrane Approach Tile Shower Stall – Liquid Membrane Approach

Roofing

49 49 50 53 53 54 57 57 58 59 60 61 62 63 51

Roof Underlayment Shingle Roof General Tile Roof General

Thermal Draft

Attics

Fiberglass Wall Insulation

Wall Cladding

Brick General

Brick Windows and Doors Brick Rake Roof Brick Shed Roof Cultured Stone Stucco – 1 Coat Siding – Cementitious

CENTURY PROUD

Externally, “A Home For Every Dream” is our tagline for future and existing Homeowners. Internally, our goal is to be “Century Proud” in everything we do, every day.

WHAT DOES IT MEAN TO BE “CENTURY PROUD”? As a Century feld associate, there are three components of being Century Proud:

• Represent yourself in the most professional way possible. How you carry yourself, how you speak, how often you smile, and your attire … all influence how our Trade Partners/Suppliers and Homeowners perceive you. • “Every Home. Every Room. Every Day.” Walk your community every day and ensure your site, entry, landscaping, signage, model, and production homes look picture-perfect. How our communities look and feel is a direct reflection on our company and the pride we take in our work. • Provide a frst-class experience to every Trade Partner/Supplier and Homeowner every day. Effective communication, scheduling, and jobsite management will lead to faster build times, high quality homes, and delighted Homeowners. As a valued member of the Century team, we challenge you to be “Century Proud,” and give your personal best each and every day.

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2 | Checklist Overview | CONSTRUCTION STANDARDS CHECKLISTS

OVERVIEW

The Construction Standards Checklists outlines how we build homes at Century. Whether your title is Construction Manager, Construction Manager 2, Senior Construction Manager, or Area Construction Manager, this Playbook serves as the best resource for all things related to your department and role. These checklists have been created to guide our feld associates in ensuring the highest quality in every aspect of home construction. The purpose of these standards is to provide clear, consistent, and actionable steps for building homes that not only meet but exceed industry standards and customer expectations. In the field of home construction, attention to detail is key. Each phase of building, from foundation to finishing touches, requires precision and adherence to best practices. By following these checklists (if applicable to your area), our feld associates will have a structured and reliable tool to ensure that all critical elements are consistently met which results in less errors, rework, and delays.

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4 | Foundations | CONSTRUCTION STANDARDS CHECKLISTS

FOUNDATIONS

CONCRETE GENERAL

FOUNDATIONS  A. All form boards are properly braced or tied together, so as to maintain the design shape.  B. Foundation/Slab brick ledge is poured at same

time and integrated into the foundation/slab. If applicable, brick ledge is flat, level or stepped according to the soil/grade requirements and accommodates the type of masonry to be installed.  C. Concrete batch ticket is checked and is as specifed by Engineer of Record (EOR). If applicable, this can also be verifed by 3rd Party Inspection Company.  D. Water added on-site is no more than 1 gallon per cubic yard.  E. Concrete is discharged within 90 minutes after the introduction of water to cement.  F. An adequate number of fnishers are on site to complete the slab in a timely manner.  G. Concrete should be sufficiently workable for placement around reinforcement, stem walls, footers and slab penetrations.  H. All concrete is consolidated using mechanical vibration to avoid visible honeycombing or exposed aggregate.  I. Concrete is placed in a manner which does not result in cold joints.

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CONVENTIONAL SLAB-ON-GRADE

FOUNDATIONS  A. All areas around the foundation, plumbing, electrical and chases have been backflled in accordance with soils report and Engineer of Record (EOR) design specifcations.  B. All conduit is placed at a sufficient depth below the slab so as not to impact the thickness of the slab.  C. All footing trenches are clean, straight and square.  D. Minimum 6 mil vapor barrier installed beneath all slab and grade beams, unless exempted by local code or EOR with all seams or cuts sealed with polypropylene tape.  E. Pipes passing through concrete are protected

with sleeve or wrap that allows for movement including expansion and contraction of piping.  F. Vapor barrier at penetrations includes an additional 2' x 2' piece poly vapor barrier that is sealed to feld of the vapor barrier and the penetration.  G. When using non-structural welded wire metal reinforcement, it is elevated using chairs so that the wire is placed in the top 1/3 of the slab.  H. Slab depth meets minimum slab depth requirement of 3 ½” per code or refer to EOR structural drawings.  I. All slabs have control joints cut or tooled 1/4 thickness of the slab at 10' intervals within 24 hours of placement.  J. EOR is required to make spot observations of the trade contractor.

6 | Foundations | CONSTRUCTION STANDARDS CHECKLISTS

POST-TENSIONED

FOUNDATIONS  A. All plumbing, electrical and chases have been backflled and compacted in accordance with soils report and Engineer of Record (EOR) design specifcations.  B. All conduit is placed at a sufficient depth below the slab so as not to impact the thickness of the slab.  C. All footing trenches are clean, straight and square.  D. Minimum 6 mil vapor barrier installed beneath all

slab, grade beams, and bottom of footers unless exempted by local code or EOR with all seams or cuts sealed with polypropylene tape.  E. Pipes passing through concrete are protected with sleeve or wrap that allows for movement including expansion and contraction of piping.  F. Vapor barrier at penetrations includes an additional 2' x 2' piece poly vapor barrier that is sealed to feld of the vapor barrier and the penetration.  G. Post-tensioned cable ends are protected with caps.  H. EOR is required to make spot observations of the trade contractor.

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CRAWLSPACE

FOUNDATIONS  A. Ladder wire or other structural reinforcement is installed per the Engineer of Record (EOR) in footers and walls.  B. All footing trenches are clean, straight, and square.  C. Spoil piles are not encroaching on excavation site.  D. Crawlspace vents are installed within 3 feet of each corner and elsewhere as specifed on the plans.  E. Grading in the footprint of the crawlspace is according to the site plan.  F. Minimum 6 mil vapor barrier installed beneath all

sill plates and piers and mechanically fastened to avoid coming loose. Drape the vapor barrier down the wall and seal all seams or cuts with polypropylene tape.

 G. Backfll in lifts to avoid cave-in conditions and slope according to geotechnical recommendations or code standards; whichever is greater.  H. If there are metal or steel components, they need

to be below the vapor barrier. No construction material or debris can be laid on top of vapor barrier.  I. EOR is required to make spot observations of the trade contractor.

8 | Foundations | CONSTRUCTION STANDARDS CHECKLISTS

BASEMENTS

FOUNDATIONS  A. Keyway, pinning, or both are in place to connect footer and poured wall.  B. All footing trenches are clean, straight and square.  C. Spoil piles are not encroaching on excavation site.  D. Bracing for formwork is in place as specifed by Engineer of Record (EOR).  E. All plumbing, electrical and chases have been backflled in accordance with soils report and EOR design specifcations.  F. All sub-base materials (gravel, sand, etc.) is in place per EOR.  G. Minimum 6 mil vapor barrier installed beneath all

slab, grade beams, and bottom of footers unless exempted by local code or EOR with all seams or cuts sealed with polypropylene tape. Mechanically adhere the vapor barrier to the foundation wall.  H. Pipes passing through concrete are protected with sleeve or wrap that allows for movement including expansion and contraction of piping.  I. Vapor barrier at penetrations includes an additional 2' x 2' piece poly vapor barrier that is sealed to feld of the vapor barrier and the penetration.  J. Dampproofng and/or drainage mat is in place on exterior of foundation wall. Where specifed, foundation drains are placed correctly, backflled with stone, and directed away from foundation.  K. Backfll in lifts to avoid cave-in conditions and slope according to geotechnical recommendations or code standards; whichever is greater.  L. EOR is required to make spot observations of the trade contractor.

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10 | Framing | CONSTRUCTION STANDARDS CHECKLISTS

FRAMING

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12 | Framing | CONSTRUCTION STANDARDS CHECKLISTS

NON-STRUCTURAL FRAMING

FRAMING  A. Ensure 1/8" gap between OSB (or similar product) sheathing on all 4 sides to include subfloor.  B. Framing is to be 16" on center around all tub and shower walls (including knee walls).  C. All subfloor, stair treads, HVAC Platforms to be minimum 23/32" OSB or equivalent, recommend subfloor adhesive in conjunction with ring shank nails or screws, installed with proper spacing/ offsets.  D. Roof decking includes H-clips to ensure proper gapping.  E. Cricket installed at chimneys and other penetrations of a similar shape that create a parallel line with the ridge line. The cricket must be capable of shedding water 6" beyond the corner of the fnished structure.  F. Open framed corners (open framed corners

for insulation) are to be used where possible (exception due to site specifc engineering/ Municipality requirements details where this is not achievable).  G. Ladder blocking at interior walls to exterior intersections is vertical, eliminating the thermal bridge from inside to out. This also allows the wall insulation to be placed behind the blocking.  H. All untreated wood is protected from any masonry or concrete contact with metal plate or flashing membrane.  I. Truss clip or screw (or engineered equivalent) clips properly installed with visible clearance in place for all truss to non-load bearing wall connections. Toe nailing trusses is prohibited.  J. A sill sealing strategy is employed beneath all base plates on exterior walls, including the garage separation wall, at foundation contact.

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12 | Framing | CONSTRUCTION STANDARDS CHECKLISTS

STRUCTURAL FRAMING

FRAMING  A. Solid contact is maintained at all headers, beams, and studs down to the foundation.  B. All load points are continuously transferred to the foundation.  C. No alterations (holes, notches, splices, etc.) to any engineered structural component (beams, trusses, TJl's, etc.) without an engineer repair protocol. Or per manufacturer recommendations for TJl's.  D. All structural and bracing details are followed per Engineer of Record (EOR)/Municipality requirements details on plans.  E. All headers are installed per EOR.  F. Correct nailing pattern and size of fasteners on site-built beams/girder trusses/ stud packs per EOR.

 G. All hangers per EOR are installed with correct size and type of fastener.  H. Hurricane clips or truss screws are in place where trusses meet exterior walls.  I. All beams to be supported by full depth of wall below unless abutting beams with dimensional lumber should share the space equally.  J. Any stud in an exterior wall or bearing partition shall be permitted to be cut or notched to a depth not exceeding 25 percent of its width. Studs in nonbearing partitions shall be permitted to be notched to a depth not to exceed 40 percent of a single stud width.

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14 | Plumbing and Electrical | CONSTRUCTION STANDARDS CHECKLISTS

PLUMBING

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16 | Plumbing and Electrical | CONSTRUCTION STANDARDS CHECKLISTS

PEX INSTALLATION

PLUMBING AND ELECTRICAL SYSTEMS  A. Piping is fastened every 6' in the attics.  B. Fasteners are frm but loose enough to allow piping to move.  C. The PEX installation with steel studs followed the manufacturer’s recommendations.  D. All horizontal runs in the floor framing are fastened every 32" o.c.  E. All pipe supports are installed where piping exits wall framing.  F. Nailing plates are installed to protect pipes that are run within 1 ½" of the face of a stud or joist.  G. Fasteners hold the piping in position to prevent strain on the fttings when the piping is bent.

 H. Vertical runs are supported at every floor level.  I. Long runs of piping have an offset to allow for pipe expansion.  J. PEX is kept a minimum of 12" vertical and 6" horizontal from sources of high heat or insulated with approved material, per code.  K. PEX pipe is minimum 3006 series, preferably 5006 series.  L. All fttings and manifolds should be made by the pipe manufacturer and installed per manufacturer installation instructions.  M. Plastic sleeves are installed to protect PEX piping where it penetrates through the slab or block.  N. Where fre sprinkler systems are present, CPVC sprinkler system piping is not in contact with any dissimilar materials such as metal strapping, truss plates, and wiring.

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16 | Plumbing | CONSTRUCTION STANDARDS CHECKLISTS

ELECTRICAL

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18 | Plumbing | CONSTRUCTION STANDARDS CHECKLISTS

RECEPTACLE WIRING

PLUMBING AND ELECTRICAL SYSTEMS  A. Utilize set screws for all electrical receptacles.  B. The use of the push-connect or “backstab” method is prohibited.

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18 | HVAC Systems | CONSTRUCTION STANDARDS CHECKLISTS

HVAC SYSTEMS

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20 | HVAC Systems | CONSTRUCTION STANDARDS CHECKLISTS

FLEX DUCT

HVAC SYSTEMS  A. Ducts and distribution boxes are installed per the layout drawing are stretched tightly and supported above the bottom cord to allow for full depth of insulation.  B. Held a minimum of 6" away from roof deck sheeting when/where possible.  C. Stirrups used to strap ducts must be a minimum of 1 ½" in width.  D. Ductwork has minimal sag (no more than 1/2" per foot) and is supported in stirrups placed at least every 4 feet.  E. Balancing dampers are in place and are labeled and accessible per the layout drawing. Damper grills are an acceptable method for dampening.  F. Ductwork size, register and return location follows the design layout and layout is provided on site.  G. Ducts in unconditioned space are not in contact with other ducts and building components (when space allows) to avoid compressing the insulation and potential condensation.

 H. Bends in flexible duct are not less than one duct diameter at the centerline of the radius, maintaining the diameter of duct through bend.  I. Any damage to the ductwork vapor barrier jacket is repaired with UL181 tape.

 J. All unions and terminations of flexible duct jackets are sealed with mastic or UL 181 tape, fully encapsulating the insulation and connecting collar with no gaps at the ends where branches meet trunk lines, unions, or boots.  K. Insulated boots are sealed with mastic or UL 181 tape to ensure insulation is in contact with the metal boot.  L. All seams in the boot are sealed with mastic or UL 181 tape to prevent leakage inside the boot.  M. All plenums are sealed with mastic or UL 181 tape to air handler.  N. All living spaces have a return air strategy. Any room requiring more than 50 CFM's of supply air will require return air strategy (dedicated return, jump duct, or transfer grille - no door undercuts except for closets, pantries or similar small spaces).  O. When ducts are in contact with lower truss chords, inspect for full coverage with attic insulation material.

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20 | HVAC Systems | CONSTRUCTION STANDARDS CHECKLISTS

SHEET METAL

HVAC SYSTEMS  A. All ductwork follows the design layout with fttings in the appropriate locations.  B. Balancing dampers are in place and are labeled and accessible per the layout drawing. Damper grilles are an acceptable method for dampening.  C. Longitudinal joints are correctly oriented in a downward fashion for proper sealing.  D. All seams in metal elbows and collar fttings are sealed with mastic or UL 181 tape, all longitudinal seams and transverse seams in branches and trunks are sealed with mastic or UL 181 tape.  E. Mastic is applied heavy enough to completely fll and cover seams at approximately 1/8" in thickness. (not pictured)  F. Metal boots are sealed with mastic or UL 181 tape to prevent leakage.  G. All seams in the duct insulation are sealed with mastic or UL 181 tape, leaving no gaps or openings at the ends where branches meet trunk lines, unions, or boots.  H. All plenums are sealed with mastic or UL 181 tape to air handler.  I. All living spaces have a return air strategy. Any

room requiring more than 50 CFM's of supply air will require return air strategy (dedicated return, jump duct, or transfer grille - no door undercuts except for closets, pantries or similar small spaces).  J. Sheet metal ductwork is secured and supported at proper intervals (2' from elbow, 4' from branch intersection, 8' straight run), and seams are all accessible for sealing (not pictured).  K. Ducts have a minimum R-10 rigid insulation installed behind if in exterior wall (i.e. garage).

 L. Branch takeoffs are installed more than 12" from trunk end.  M. Diffusers are placed as to not become blocked (not pictured).

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22 | Drainage Plane | CONSTRUCTION STANDARDS CHECKLISTS

DRAINAGE PLANE

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24 | Drainage Plane | CONSTRUCTION STANDARDS CHECKLISTS

HOUSEWRAP – GENERAL

DRAINAGE PLANE  A. Housewrap substrate is free from nails, staples and other rough hardware prior to installation of the housewrap.  B. Housewrap installed shingle style as the water- resistive barrier (WRB) over the entire wall surface including unconditioned spaces and under trim.  C. Plastic cap nails or plastic cap staples used to attach housewrap per manufacturer installation instructions.  D. All damaged housewrap repaired or replaced

per manufacturer repair criteria (reference to manufacturer guidelines), based on extent of damage.  E. Housewrap extended a minimum of 1" below the frame-to-foundation intersection.  F. Vertical seams at inside and outside corners of the structure overlap 12". Horizontal seams are overlapped a minimum of 6" and taped.  G. Additional 2' x 2' target flashing installed and integrated behind the housewrap at all frame sub-fascia returns.  H. Minimally sloped surfaces such as parapets, half walls, porch columns, etc. have an additional layer of self-adhered flashing membrane installed under housewrap.  I. Fasteners installed a minimum of 6" from sills and jambs and minimum 9" from the heads of rough openings.  J. Flashing membrane installed in lieu of housewrap at locations where conditions would cause deterioration of the housewrap and extends minimum of 6" beyond all concrete and extends below the foundation line minimum 3".  K. Ornamental details or accessories through the wall properly flashed and protected.

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HOUSEWRAP – PENETRATIONS

DRAINAGE PLANE  A. All penetrations are adequately protected with correctly sized rigid type flashing panels and flanged components. Sealing electrical wire with butyl tape is acceptable.  B. Flashing panels or flanged components adequately supported by framing members or sheathing.  C. Flashing panels or flanged components are integrated behind the water-resistive barrier (WRB).  D. Housewrap is tucked under the bottom side of flashing panel and fastened to the framing. Fasteners penetrating through the flashing panel are sealed or covered.  E. Horizontal trim pieces and ledger boards attached through the WRB have drip caps integrated behind the housewrap and turned up or down at the ends.

24 | Drainage Plane | CONSTRUCTION STANDARDS CHECKLISTS

HOUSEWRAP – WINDOWS

DRAINAGE PLANE  A. Housewrap is cut at rough opening, folded in at jambs, and fastened to the interior face of the rough opening.  B. A butyl tape sill pan with flexible flashing in the corners, or alternate sill pan detail installed with sealant applied to the back of the window frame. Sealant should create an end dam, extending 6" up each jamb.  C. Continuous 3/8" bead of high-quality sealant applied to the head and jambs behind the window nailing fn, in line with any pre-punched holes, at time of installation. Non-continuous bead of sealant behind flange at window sill.  D. Window fastened per manufacturer installation instructions and is damage free.  E. Butyl flashing tape installed at each jamb

extending minimum 1" above the window head flange and below bottom edge of sill flashing.  F. Butyl flashing tape installed at the head layered over and extended 2" past the flashing tape at the jambs.  G. Header flap laps over head flashing and taped at diagonal corners and at minimum skip-taped along horizontal.  H. For mulled windows and windows without continuous integrated drip, drip cap installed with positive slope away from the house, integrated behind or taped to the WRB and turned up or down at the ends.

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HOUSEWRAP – DOORS

DRAINAGE PLANE  A. Housewrap is cut at rough opening, folded in at jambs, and fastened to the interior face of the rough opening.  B. A butyl tape sill pan with flexible flashing in the corners is installed. Sealant should create an end dam, extending 6" up each jamb. Molded preformed door sill pan or recess in concrete are acceptable alternatives.  C. Door installed per manufacturer installation

instructions and is damage-free. Sill is adequately supported, and all weep holes are unobstructed.

 D. Drip cap with 3" vertical leg is installed with

positive slope away from the house, integrated behind or taped to the housewrap and turned up or down at the ends.

 E. Two-sided door flashing tape or butyl tape bridging door frame to housewrap.  F. Header flap laps over head flashing and taped at diagonal corners and at minimum skip-taped along horizontal.

26 | Drainage Plane | CONSTRUCTION STANDARDS CHECKLISTS

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BLACK PAPER – GENERAL

DRAINAGE PLANE  A. Black paper is installed horizontally, shingle style, with adequate support from sheathing.  B. Black paper is tight, flat and adequately secured to the framing with quality exterior grade fasteners and is damage free.  C. Minimally sloped surfaces such as parapets, half

walls, porch columns, etc. have an additional layer of self-adhered flashing membrane installed under black paper.  D. Vertical seams and seams at inside and outside corners lapped a minimum of 6", and horizontal seams lapped a minimum of 2".  E. Black paper is properly integrated at window sills by tucking black paper under sill flashing.  F. Black paper butts into the window jambs above the sill.  G. No vertical joints in black paper within 24" of any openings.  H. Additional 2' x 2' target flashing is installed and integrated behind the building paper behind all frame sub-fascia returns.  I. Self-sealing flashing membrane installed behind all surface-mounted heavy duty trim pieces and ledger boards attached with fasteners larger than 1/8" diameter.

28 | Drainage Plane | CONSTRUCTION STANDARDS CHECKLISTS

BLACK PAPER – PENETRATIONS

DRAINAGE PLANE  A. All penetrations are adequately protected with correctly sized rigid type flashing panels and flanged components. Sealing electrical wire with butyl tape is acceptable.  B. Flashing panels or flanged components adequately supported by framing members or sheathing.  C. Flashing panels or flanged components are integrated behind the water-resistive barrier (WRB).  D. Black paper is tucked under the bottom side of flashing panel and fastened to the framing. Fasteners penetrating through the flashing panel are sealed or covered.  E. Horizontal trim pieces and ledger boards attached through the WRB have drip caps integrated behind the black paper and turned up or down at the ends.

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BLACK PAPER – WINDOW

DRAINAGE PLANE  A. A butyl tape sill pan with flexible flashing in the corners, or alternate sill pan detail installed with sealant applied to the back of the window frame. Sealant should create an end dam, extending 6" up each jamb.  B. 9" base flashing installed against solid backing adjacent to head, jambs and sill in accordance with AAMA Standards. Base flashing at jambs does not extend above head flashing.  C. Continuous 3/8" bead of sealant applied to the

head and jambs behind the window nailing fn, in line with any pre-punched holes, at time of installation. Non-continuous sealant at the sill.  D. Window fastened per manufacturer installation instructions and is damage free. All weep holes are unobstructed.  E. Flashing tape at jambs extended below the window to the sill and extended to the top of the head flashing.  F. Flashing tape or mechanically-attached flashing set in sealant at the head layered over the head nailing fn and extending minimum 2" past the jamb flashing.

30 | Drainage Plane | CONSTRUCTION STANDARDS CHECKLISTS

BLACK PAPER – RECESSED WINDOW

DRAINAGE PLANE  A. The recessed opening is entirely wrapped with solid backing.  B. Self-adhered membrane is installed on the potshelf and laps down over the black paper by 2" and up under the sill flashing and minimum 4" on the return walls.  C. A butyl tape sill pan with flexible flashing in the corners, or alternate sill pan detail installed with sealant applied to the back of the window frame. Sealant should create an end dam, extending 6" up each jamb.  D. 9" base flashing installed at jambs against solid backing.  E. For recesses 4" and less, self-adhered flashing membrane installed at top horizontal plane, pressed into corners, is integrated with the black paper above, and overlaps the top flange of the window. For recesses greater than 4", black paper is installed at top horizontal plane.  F. Continuous 3/8" bead of sealant applied to the

head and jambs behind the window nailing fn, in line with any pre-punched holes, at time of installation. Non-continuous sealant at the sill.  G. Flashing tape at jambs extended below the window to the sill and extended to the top of the head flashing.  H. Flashing tape at the head layered over the jamb flashing and extended minimum 1" past the jamb flashing.  I. Flashing tape or pre-fabricated accessories applied in all corners to cover any potential pin holes or voids.

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BLACK PAPER – DOORS

DRAINAGE PLANE  A. A butyl tape sill pan with flexible flashing in the corners is installed. Sealant should create an end dam, extending 6" up each jamb. Molded preformed door sill pan or recess in concrete are acceptable alternatives.  B. 9" base flashing installed at jambs against solid backing and does not extend above head flashing.  C. 9" base flashing installed at the head lapping over the jamb flashing and extending 1" past the jamb flashing.  D. Door installed per manufacturer installation instructions and is damage-free. Sill is adequately supported, and all weep holes are unobstructed.  E. Flashing tape applied at each jamb and head at the rough opening and door frame to bridge gap.  F. If a stucco stop is in place it is sealed to the door frame.

32 | Drainage Plane | CONSTRUCTION STANDARDS CHECKLISTS

THIN PROFILE WRB SHEATHING – GENERAL

DRAINAGE PLANE  A. Sheathing installed continuous as the water-

resistive barrier (WRB) over the entire wall surface including unconditioned spaces and under framing and trim pieces. Printed side is facing out.

 B. Sheathing panels installed vertically or

horizontally with all panel edges supported by framing or blocking.  C. Specifed fasteners are installed with underside of fasteners flush with surface of sheathing - do not overdrive.  D . Fastener spacing maximum 3" o.c. along edges and 3" o.c. in the feld. Fastener edge distance is minimum 3/8". Staples installed parallel to framing members. Minimum fastener embedment of 1" into framing.  E. Sheathing joints shingle lapped 3/4" with single

row of fasteners along framing members OR sheathing joints butted with single row of fasteners in each panel.  F. If butted, joints taped shingle fashion with minimum 2 ½" wide tape approved manufacturers tape, centered over seams and pressed flat to remove wrinkles and ensure proper adhesion.  G. Tape splices overlap minimum 3" on vertical and horizontal seams and 1" at T-Joints.  H. Approved 4" flashing tape installed on the exterior at all inside and outside corners.  I. Additional 2' x 2' target flashing installed at all frame sub-fascia returns and taped to the WRB with flashing tape at top and sides.  J. Minimally sloped surfaces such as parapets, half walls, porch columns, etc. have an additional layer of self-adhered flashing membrane installed and lapped up wall to achieve proper adhesion.  K. Ornamental details or accessories through the wall properly flashed and protected.  L. Sheathing is always installed in a shingle fashion method with 1" overhang at the foundation transition.  M. All damage to panels repaired per manufacturer specifcations depending on extent of damaged area.  N. Apron and step flashing taped to sheathing panels at roof-to-wall intersection using minimum 6" flashing tape.

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THIN PROFILE WRB SHEATHING – PENETRATIONS

DRAINAGE PLANE  A. All penetrations are adequately protected with butyl flashing tape or correctly sized rigid type flashing panels and flanged components and adequately supported by the sheathing.  B. Electrical wires should be sealed from the bottom and top with butyl flashing tape.  C. When installed, flashing panels or flanged components are sealed to the sheathing on the sides and top.  D. All flashing tape is pressed flat, provides a tight seal around the flashing panel and covers any fasteners penetrating the flashing panel. Install additional seam tape where required per manufacturer installation instructions.  E. Horizontal trim pieces and ledger boards attached through the water-resistive barrier (WRB) have drip caps sealed to the sheathing and turned up or down at the ends.

34 | Drainage Plane | CONSTRUCTION STANDARDS CHECKLISTS

THIN PROFILE WRB SHEATHING – WINDOWS

DRAINAGE PLANE  A. Butyl tape sill pan with flexible flashing in the corners, or alternate sill pan detail installed with sealant applied to the back of the window frame. Sealant should create an end dam, extending 6" up each jamb.  B. Continuous 3/8" bead of sealant applied to the head and jambs behind the window nailing fn, in line with any pre-punched holes, at time of installation. Non-continuous sealant at the sill.  C. Window fastened per manufacturer installation instructions and is damage free. All weep holes are unobstructed.  D. Approved flashing tape applied to each of the jamb flanges so that it overlaps the sill flashing minimum 1" and pressed flat to smooth any wrinkles and ensure proper adhesion.  E. Approved flashing tape applied to the header

so that it overlaps the jamb flashing minimum 2" and pressed flat to smooth any wrinkles and ensure proper adhesion. Install additional seam tape where required per manufacturer installation instructions.

 F. Bottom flange is NOT taped.  G. For mulled windows and windows without integrated drip, a drip cap with 3" vertical leg is installed with positive slope away from the house, integrated behind the water-resistive barrier (WRB) and turned down at the ends.

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THIN PROFILE WRB SHEATHING – DOORS

DRAINAGE PLANE  A. A butyl tape sill pan with flexible flashing in the corners is installed. Sealant should create an end dam, extending 6" up each jamb. Molded preformed door sill pan or recess in concrete are acceptable alternatives.  B. 9" base flashing installed at jambs against solid backing and does not extend above head flashing with 9" base flashing installed at the head lapping over the jamb flashing and extending 1" past the jamb flashing.  C. Two-sided door flashing tape or butyl tape bridging door frame to thin profle WRB sheathing or flashing tape is applied at each jamb and head at the rough opening and door frame to bridge gap.  D. Door installed per manufacturer installation instructions and is damage-free. Sill is adequately supported, and all weep holes are unobstructed.

36 | Drainage Plane | CONSTRUCTION STANDARDS CHECKLISTS

BLOCK WALL – GENERAL

DRAINAGE PLANE  A. Block seat has been cast into foundation.  B. At roof to wall intersections there is a spacer to keep the trusses from resting on the CMU.  C. Butyl tape was installed at the concrete masonry unit (CMU) block wall to wood frame construction.  D. Housewrap is properly installed and overlaps the weep screed at the CMU block wall to wood frame transition by at least 1".  E. Penetration locations including at the base of wall and utility penetrations have been mortar packed and sealed with sealant where necessary.  F. Lath installed at penetrations where necessary to ensure proper stucco adhesion.

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BLOCK WALL – WINDOWS

DRAINAGE PLANE  A. Concrete sill has been installed providing proper slope for drainage.  B. Pressure treated wood has been installed as wood buck.  C. The wood bucks have been back caulked including tops, bottoms, and any end grain.  D. Liquid applied waterproof membrane has been installed over wood buck and block opening per code.  E. Window has been installed and sealed with C920 class 25 sealant per manufacturer's recommendations.

38 | Drainage Plane | CONSTRUCTION STANDARDS CHECKLISTS

BLOCK WALL – DOORS

DRAINAGE PLANE  A. A butyl tape sill pan with flexible flashing in the corners is installed. Sealant should create an end dam, extending 6" up each jamb. Molded preformed door sill pan or recess in concrete are acceptable alternatives.  B. Pressure treated wood has been installed as a wood buck.  C. The wood bucks have been back caulked including tops, bottoms, and any end grain.  D. Liquid applied waterproof membrane has been installed over wood buck and block opening per code.  E. Door and trim have been installed and sealed with C920 class 25 sealant per manufacturer's recommendations.

CONSTRUCTION STANDARDS CHECKLISTS | Drainage Plane | 39

40 | Air Barrier | CONSTRUCTION STANDARDS CHECKLISTS

AIR BARRIER

CONSTRUCTION STANDARDS CHECKLISTS | Air Barrier | 41

42 | Air Barrier | CONSTRUCTION STANDARDS CHECKLISTS

AIR SEALING

AIR BARRIER  A. All cut-outs and penetrations in the top and bottom plates and all tub trap holes are sealed.  B. All holes in the exterior envelope of the house are sealed.  C. All exterior plates in contact with concrete, including garage-to-house walls, are draft sealed with compressible foam, double rows of sealant or construction glue.  D. Low expansion foam is used for air sealing around windows and doors. Window back dams to be sealed with caulk.  E. Any visible gaps between studs are sealed with foam or caulk.  F. All knockouts in electrical boxes in exterior walls are fully sealed to the exterior sheathing with expanding foam.  G. Exhaust vent roof penetrations are sealed.

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42 | Air Barrier | CONSTRUCTION STANDARDS CHECKLISTS

DRAFTSTOPPING

AIR BARRIER  A. Air barrier at knee walls in attics are installed on the attic side of the wall, sealed with caulk, foam or tape around the edges and at any seams.  B. Air barrier is installed on the inside of all freplace boxes and caulk, foam or tape around the edges and at any seams.  C. Air barrier is installed behind all tubs and showers located on exterior walls and sealed with caulk, foam or tape around the edges and at any seams. assemblies in concealed spaces and sealed with caulk, foam or tape around the edges and at any seams.  E. Air barrier is installed on the lid and wall side of  D. Air barrier is installed on all exterior wall

any vertical or horizontal chases and drop soffits. Edges are sealed with caulk, foam or tape around the edges and at any seams.  F. All cantilevered soffits under conditioned space are capped with a rigid material and sealed around the edges with caulk, foam, or tape around the edges and at any seams. .

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44 | Showers and Tubs | CONSTRUCTION STANDARDS CHECKLISTS

SHOWERS & TUBS

CONSTRUCTION STANDARDS CHECKLISTS | Showers and Tubs | 45

46 | Showers and Tubs | CONSTRUCTION STANDARDS CHECKLISTS

SOLID SURFACE SHOWER STALL

SHOWERS AND TUBS  A. All shower units must have a continuous, integral tiling flange that is a minimum of 1" high. No cracked or damaged flanges are permitted.  B. 2x6 blocking is installed at perimeter of shower at flange height - bottom edge of blocking should be approximately 1" below top of tiling flange.  C. 4" butyl based self-adhered flashing is used to seal the pan flange to the 2x6 blocking - Use “7 step approach” with 6" pieces of flashing in front and back corners and individual pieces of flashing between corners.  D. Shower backerboard is installed with a factory

edge down towards shower unit and held just above top of tiling flange -backerboard should extend beyond surround area so that the joint between backer board and drywall does not align with edge of solid surface surround.  E. 6" butyl tape was installed at all backerboard corners and behind seams in the solid surface surround.  F. Adhesive for solid surface surround is applied in a vertical pattern to restrict sideways movement of water.  G. Leave a minimum 1/8" gap between solid surface panels and shower unit for sealant.  H. Pan weeps are open and clear of grout and sealant.  I. All solid surface panel joints are flled with C920 Class 25 caulk at all transitions, including joints between shower pan and surround.  J. Any shower seats shall have a continuous waterproofng membrane over them.

CONSTRUCTION STANDARDS CHECKLISTS | Showers & Tubs | 45

TILE SHOWER STALL – SHEET MEMBRANE APPROACH

SHOWERS AND TUBS  A. All shower units must have a continuous, integral tiling flange that is a minimum of 1" high. No cracked or damaged flanges are permitted.  B. 2x6 blocking is installed at perimeter of shower at flange height - bottom edge of blocking should be approximately 1" below top of tiling flange.  C. 4" butyl based self-adhered flashing is used to seal the pan flange to the 2x6 blocking - Use “7 step approach” with 6" pieces of flashing in front and back corners and individual pieces of flashing between corners.  D. Shower backerboard is installed with a factory

edge down towards shower unit and held just above top of tiling flange -backerboard should extend beyond surround area so that the joint between backer board and drywall does not align with edge of tile.  E. Membrane is properly installed to manufacturers requirements including all necessary corner and trim components.  F. The membrane installer has been trained by the manufacturer.  G. Utilize unmodifed thinset, or manufacturer labeled thinset for application of the membrane and tile.  H. Leave a minimum 1/8" gap between tile and shower unit for sealant.  I. Pan weeps were open and clear of grout and sealant.  J. Do not grout the corners or transition to the shower pan – seal using C920 Class 25 sealant.

46 | Showers & Tubs | CONSTRUCTION STANDARDS CHECKLISTS

TILE SHOWER STALL – LIQUID MEMBRANE APPROACH

SHOWERS AND TUBS  A. All shower units must have a continuous, integral tiling flange that is a minimum of 1" high. No cracked or damaged flanges are permitted.  B. 2x6 blocking is installed at perimeter of shower at flange height - bottom edge of blocking should be approximately 1" below top of tiling flange.  C. 4" butyl based self-adhered flashing is used to seal the pan flange to the 2x6 blocking - Use "7 step approach" with 6" pieces of flashing in front and back corners and individual pieces of flashing between corners.  D. Shower backerboard is installed with a factory

edge down towards shower unit and held just above top of tiling flange -backerboard should extend beyond surround area so that the joint between backer board and drywall does not align with edge of tile.  E. Seal all corners, joints, and any fasteners that break the surface with C920 Class 25 sealant.  F. Apply liquid applied waterproof membrane to all seams. Follow manufacturer's installation specifcations - two coats are required to achieve required membrane thickness.  G. Leave a minimum 1/8" gap between tile and shower unit for sealant.  H. Pan weeps were open and clear of grout and sealant.  I. Do not grout the corners or transition to the shower pan – seal using C920 Class 25 sealant.  J. Any shower seats shall have a continuous waterproofng membrane over them.

CONSTRUCTION STANDARDS CHECKLISTS | Showers & Tubs | 47

48 | Roof Cladding and Drainage | CONSTRUCTION STANDARDS CHECKLISTS

ROOF CLADDING & DRAINAGE

CONSTRUCTION STANDARDS CHECKLISTS | Roof Cladding and Drainage | 49

50 | Roof Cladding and Drainage | CONSTRUCTION STANDARDS CHECKLISTS

ROOF UNDERLAYMENT

ROOF CLADDING AND DRAINAGE  A. For roof pitch 4:12 and greater a single layer of underlayment is installed shingle style with minimum 4" horizontal overlaps and minimum 6" vertical overlaps.  B. For roof pitch less than 4:12 pitch a double layer

of underlayment is installed shingle style with minimum 4" horizontal overlaps and minimum 6" vertical overlaps.  C. Underlayment wraps up adjacent walls a minimum of 12" at shed-roof-to-wall and rake-roof-to-wall intersections.  D. Overlap roofng underlayment at least 4" over hips and ridges.  E. When installed, drip edge is installed over the underlayment at the rakes and under the underlayment at the eaves.  F. Ice & Water Shield is installed on the frst 36" of all eaves per local building code, to prevent ice- damming in areas where freezing occurs.  G. Button cap nails are used to fasten underlayment to roof deck when tiles/shingles are not installed the same day. Spacing of fasteners is 6"o.c. at edges and 12"o.c. in the feld.  H. Valley flashing is installed and has sufficient overhang to shed water beyond fascia. Horizontal courses extend over the valley reinforcement a minimum of 6".  I. 4" x 4" kickout flashing is installed with a 120-deg angle kickout and extending 1 ½" beyond roof edge.  J. Continuous pan flashing with a rolled hem edge is installed at rake roof to wall intersection. Only slotted batten extenders are permitted in pan flashing and must be glued in place. No fasteners are permitted in the bottom of pan flashing.

CONSTRUCTION STANDARDS CHECKLISTS | Roof Cladding & Drainage | 49

SHINGLE ROOF GENERAL

ROOF CLADDING AND DRAINAGE  A. Shingles attached with correct number of fasteners per local code and manufacturer specifcations.  B. No exposed nails are visible.  C. Roof vents installed per design and code requirements.  D. All roof penetrations are properly integrated with the underlayment and shingles and flashed with flashing of the correct type and size for the penetration.  E. Step flashing on shingle roofs (Florida code allows

continuous flashing) is installed at rake roof-to wall intersections and properly integrated with the drainage plane. Step flashing is attached with 2 nails to the roof deck, never to the wall, at the upper edge of the flashing away from the wall.  F. Apron flashing is installed at the shed roof-to- wall intersection and properly integrated with the drainage plane.  G. Apron flashing is sealed to the roof cladding or has hemmed edge.  H. Cut valleys are used and cut on the larger roof side of the valley, 1" above the valley.

50 | Roof Cladding & Drainage | CONSTRUCTION STANDARDS CHECKLISTS

TILE ROOF GENERAL

ROOF CLADDING AND DRAINAGE  A. Tiles are layered shingle style from the eaves to the ridge and properly attached with nails. Additional fasteners are required per industry standard in snow areas.  B. Gable end tiles are layered in shingle style with

each tile covering the nail used to attach the previous gable end tile when possible. All nails are to be sealed on the exposed side of the tile.  C. Ridge tiles cover the nails used to fasten the tiles on the main roof and the nails used to fasten the previous ridge tile.  D. Battens installed where required by design or local code.  E. All roof penetrations are properly integrated with the underlayment and tile and flashed with flashing of the correct type and size for the penetration.  F. Roof vents installed per design and code requirements.  G. The frst row of tiles overlaps the drip edge by no more than 1/2" and risers are installed to support the tiles.  H. Apron flashing is installed at the shed roof-to-wall intersection and properly integrated with the drainage plane.  I. Continuous flashing is installed at rake roof-to-wall intersections and properly integrated with the drainage plane.

CONSTRUCTION STANDARDS CHECKLISTS | Roof Cladding & Drainage | 51

52 | Thermal Enclosure | CONSTRUCTION STANDARDS CHECKLISTS

THERMAL ENCLOSURE

CONSTRUCTION STANDARDS CHECKLISTS | Thermal Enclosure | 53

54 | Thermal Enclosure | CONSTRUCTION STANDARDS CHECKLISTS

ATTIC

THERMAL ENCLOSURE  A. Batt insulation is pre-installed in all areas where required or in areas that will be inaccessible for blown-in applications, and it is installed snug with no gaps.  B. Before attic insulation is blown-in, check that depth gauge strips are installed at a spacing of one per 300 square feet and that they will be visible from the attic access.  C. Rigid ventilation baffles are in place where specifed to ensure ventilation per building code (cardboard or plastic baffles are acceptable and must be installed correctly).  D. After insulation is blown-in, check for an even fll to the appropriate depth.  E. An attic tag is displayed at the top of the attic access, or near electrical panel, indicating the R-value, insulation depth and the correct number of insulation bags was brought for installation according to the coverage chart.  F. Mechanical platforms are pre-insulated to a minimum of R-30 (or per code, whichever is higher) when the HVAC is located in

unconditioned space. Height of platform should be such to not allow for batt insulation to be compressed.  G. End dam material is sufficiently rigid to prevent sagging. Batt insulation may be used only in locations where trusses are perpendicular to the exterior wall.  H. Before drywall is placed, check that the attic access is framed with wood material to allow full-depth insulation in the region of the access.  I. The attic access closure (hatch cover) is insulated to no less than 60% of the attic required insulation value, and the insulation is permanently mounted to the hatch cover with a gasket installed at the attic hatch. Or Attic access tents are acceptable.  J. During rough-in electrical, check that only IC (In Contact) and airtight can lights are used in any insulated ceilings.

CONSTRUCTION STANDARDS CHECKLISTS | Thermal Enclosure | 53