Installation Instructions

3
BANDA W-S 14 Roll 5-1/2" x 65’ 8’’ (14 cm x 20 m)
BANDA W-S 34 Roll 13-1/3" x 65’ 8’’ (34 cm x 20 m)
W-S DIN preformed, seamless 90º inside corners
W-S DEX preformed seamless 90º outside corners
W-S TUBO section of WATER-STOP with preformed gasket to seal pipe protrusions
W-S DRAINFLASH preformed section of WATER-STOP to flashing connection to drain
2. Areas of application and Requirements
WATER-STOP is suitable to be used in conjunction with ceramic and stone tile covering for wall and floor
surfaces where protection against the penetration of moisture is necessary in new construction and
renovation projects. It is suitable for interior applications and for exterior floors and walls over suitable
substrates.
WATER-STOP isolates common shrinkage cracks found in residential and commercial construction from
telegraphing to finished surface.
Applications include showers, tub surrounds, bathrooms, commercial and residential kitchens,
backsplashes and areas surrounding swimming pools.
WATER-STOP is not to be considered the primary exterior waterproofing over occupied spaces
WATER-STOP membrane should be bonded to substrate with modified thin-set mortar. Thin-sets must be
appropriate for the substrate and conform to ANSI A118.4 or the appropriate standards and TCNA
Handbook recommendations.
2.1. Substrate Requirements
Substrate must meet requirements set forth by the TCNA and ANSI standards.
Surfaces shall be structurally sound, stable and rigid enough to support ceramic tile, stone, thin brick
and similar finishes. Substrate deflection under all kind of loads, must not exceed L/360 for thin bed
ceramic tile/brick installations or L/720 for thin bed stone installations where “L” = the span length in
inches.
Concrete and masonry:
It must be free of curing agents, sealers, water repellents or other treatments that prevent
membrane bonding. The maximum amount of moisture in the concrete substrate should not exceed
5 lbs./1000 sq. ft. (2.26 kg/92.9 m2)/24 h per ASTM F-1869 or 75% relative humidity as measured
with moisture probes per ASTM F2170 and should be between 45°F (7°C) and 90°F (32°C).
Plywood floors (interiors only) – minimum construction for direct bond:
Subfloor: 5/8" (15 mm) thick, exterior glue, tongue and groove plywood over bridged 2" x 10" (40
mm x 240 mm nominal) joists spaced 16" (400 mm) o.c. maximum; fasten plywood 6" (150 mm)
o.c. along sheet ends and 8" (200 mm) o.c. along intermediate supports with 8 d (65 mm) ring-
shank nails or screws; allow 1/8" (3 mm) between sheets; all sheet ends must be supported by a
framing member; glue sheets to joists with construction adhesive
Underlayment: 5/8" (15 mm) thick exterior glue plywood fastened 6" (150 mm) o.c. along sheet
ends and 8" (200 mm) o.c. in the panel field (both directions) with 8d (65 mm) ring-shank nails or
screws; allow 1/8" (3 mm) between sheets and 1/4" (6 mm) between the underlayment and any
abutting surfaces; offset underlayment joints from joints in subfloor and stagger joints between
sheet ends; glue underlayment to subfloor with construction adhesive. The fasteners used to fasten
the underlayment to the subfloor should not penetrate beyond the underside of the subfloor nor
into the joints.
In floors waterproofing the surface need a minimum slope to drains of 1/4" per 1' (2%). As shower
pan liner WATER-STOP membrane should be installed over properly prepared sloped fill or pre-sloped
substrates.