Constructions Standards Checklists

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