07900-3
JOINT SEALERS
PART 3 - EXECUTION
3.1 EXAMINATION
A. Verify that surfaces and joint openings are ready to receive work and field
measurements are as shown on Drawings and recommended by the manufacturer.
B. Beginning of installation means installer accepts existing conditions.
3.2 PREPARATION
A. Clean and prime joints in accordance with manufacturer's instructions.
B. Remove loose materials and foreign matter which might impair adhesion of
sealant.
C. Verify that joint backing and release tapes are compatible with sealant.
D. Perform preparation in accordance ASTM C790 for latex base sealants.
E Protect elements surrounding the work of this Section from damage or
disfiguration.
3.3 INSTALLATION
A. Install sealant in strict accordance with manufacturer's instructions.
B. Measure joint dimensions and size materials to achieve required width/depth
ratios.
C. Install joint backing to achieve a neck dimension no greater than 1/3 the joint
width.
D. Install bond breaker where joint backing is not used.
E Apply sealant within recommended application temperature ranges. Consult
manufacturer when sealant cannot apply within these temperature ranges.
F. Install sealant free of air pockets, foreign embedded matter, ridges, and sags.
G. Tool joints concave.
3.4 CLEANING AND REPAIRING
A. Clean work under provisions of Section 01710.
B. Clean adjacent soiled surfaces.
C. Repair or replace defaced or disfigured finishes caused by work of this Section.
3.5 PROTECTION OF FINISHED WORK
A. Protect sealants until cured.
13089K
