Inspect/Prepare expansion gap surface and walls.
Concrete: Remove loose particles and weak concrete to ensure sound concrete. Spalls, chipped edges, and uneven surfaces must be repaired. Suitable patching material and proper patching geometry and techniques must be used to create parallel joint face.
Note: DO NOT use a wire wheel on concrete – this will polish the substrate and cause bond-failure .
Metal: Sandblast or grind to rough, white metal and solvent-wipe immediately prior to application of silicone setting bead.
Install in proper climate conditions.
Installation of EMV-Seal should only occur in dry conditions where the application surface temperature is 40° F (5° C) and rising.
Unroll EMV-Seal Upon opening and unrolling EMV-Seal gland be sure to wipe the surfaces clean. Acetone can be used with a clean lint-free cloth.
Place backer rod into gap.
Choose and provide an appropriate diameter of backer rod equaly to, or slightly larger than, the width of the gap at time of installation. It should be snug and able to hold itself in place. Backer rod should be placed at a depth where the folded EMV-Seal placed on top of it will leave a 1/2” (12mm) min. gap between the top of the EMVSeal bellows and the wearing surface (If a chamfer exists, be sure to install 1/2” below bottom edge of chamfer).
Apply setting bead of Sikasil® WS-295 to top of backer rod-to-wall gap.
Apply a continuous 3/8” to 1/2” setting bead of Sikasil® WS-295 silicone to the joint faces at the depth the EMV-Seal bulbs will rest.
Insert V-Seal into gap.
Fold the EMV-Seal profile and insert into the expansion joint opening. Allow the seal to open and press into the adhesive beads to ensure contact with the bead and joint faces.
Apply locking bead of silicone.
Apply the locking bead of Sikasil® WS-295 in the joint over the bulbs. Do not apply the bead any higher than the serrations in the joint profile. Use a caulking tool to smooth the bead and to ensure that it makes full contact with the EMV-Seal gland and the joint substrate.
Allow to dry.
Under dry weather conditions allow a minimum 1 hour after tooling before permitting any vehicular/pedestrian traffic over the finished expansion gap. . EMV-Seal should be allowed a min. of 24 hours of
moisture-free cure time.