Installation Instructions

3.7.1. Urethane sealant or MS Polymer Sealant

Urethane sealant or MS Polymer sealant must be applied with a commercial grade caulk gun. Beads

must be continuous without skips or voids. Beads must be continuous without skips or voids.

At 1/2’’ from edge of sheet being overlapped apply two 1/8’’ beads separated 2'' and a third bead

interposed there between in a zigzagged pattern. Close and flatten pressing with flat edge of trowel.

Seams must be allowed to cure to develop strength. Do not stress until allowed to cure for 24

hours.

3.8. Flashings, Upturns & Corners

WATER-STOP should be turned up wall at least to flood point and creased for a tight fit at floor/wall

juncture. Cut the excess out of the corners.

Floor to wall intersections and upturns can also be constructed with overlapping floor and applied with

a latex modified dry-set cement mortar conform to ANSI A118.4, or using Urethane sealant or MS

Polymer sealant.

Corners should be installed overlapping floor but prior to BANDA W-S 14 or BANDA W-S 34 if used in

floor to wall joint flashing. (Figure 1)

Bond W-S DIN and W-S DEX Preformed Corners to sheet and/or substrate with a latex modified dry-

set cement mortar conform to ANSI A118.4 or Urethane sealant or MS Polymer sealant.

Check again the seal on the overlaps and corners, edges and other critical points. Caulk generously

with Urethane sealant, MS Polymer sealant or other suitable similar sealing compounds all inside and

outside corner areas, flashings, seams or any area that might present a potential leak.

3.9. Flood Testing

Waterproofing installations should be flood tested to insure that they are watertight prior to setting

tile. Wait 24 hours before testing to allow for final set of the mortar to ensure waterproof performance

of the assembly at seams and connections

4. Tile Installation

Once the entire membrane with seams, corners, and connections has been completely bonded, and

therefore waterproofed, the covering may be applied.

For tile installations using the thin-bed method, apply modified thin-set mortar directly to the exposed

WATER-STOP surface and install the tiles. Complete coverage of WATER-STOP Membrane by the bond

coat is required. For acid-resistant coverings, use an epoxy adhesive to set and grout the tile

Set tile in accordance with TCNA Handbook recommendations, ANSI A108 standards and bond coat

manufacturer's directions.

Refer to bond coat manufacturer's instructions far cure time and suitability and allow 50% additional

time. Rapid-curing type of thin-set mortar may be used with approval of mortar manufacturer.