Cracks & Control Joints
- TYPE A: FRACTURES UP TO 1/16 INCH CRACKS ( 1.6 mm )
HOW : Apply minium 2 coats of SEMCO Liquid Membrane™ to achieve a thickness of at least 30 mil to retard future reoccurrence of crack. 30 min at 70 °F between coats
PURPOSE : Repair process will aid lessening the chance for a crack to reform
- TYPE B: CRACKS BETWEEN 1/16 – 1/4 INCH ( 1.6 mm – 6.3 mm )
HOW : Roll or brush SEMCO Liquid Membrane™ inside the crack. ALLOW IT TO DRY. Roll X-Bond Liquid as a primer coat. DO NOT ALLOW IT TO DRY. Apply X-Bond mixture (1 part X-Bond Liquid : 3 parts X-Bond Stone) to fill up the cracks. ALLOW MIXTURE TO DRY. ONCE DRY roll 2 coats of SEMCO Liquid Membrane™ to achieve a thickness of at least 30 mil to prevent future reoccurrence of crack. 30 min at 70 °F between coats
PURPOSE : Repair process will aid lessening the chance for a crack to reform
TYPE C: CRACKS OR OPENINGS EXCEEDING 1/4 INCH ( 6.3 mm + )
STEP 1
HOW : Roll or brush SEMCO Liquid Membrane™ inside the crack. ALLOW IT TO DRY. Roll X-Bond Liquid as a primer coat. DO NOT ALLOW IT TO DRY. Apply X-Bond mixture* to fill up the cracks. ALLOW MIXTURE* TO DRY. ONCE DRY roll 1 coat of SEMCO Liquid Membrane™. While still wet imbed 6” wide anti-fracture fabric to surface, and immediately roll an additional 2 coats of SEMCO Liquid Membrane™ to fully encapsulate Fabric Reinforcement.
PURPOSE : Repair process will aid lessening the chance for a crack to reform
STEP 2
HOW : When applying the next line of anti-fracture fabric overlap the new sheet over the existing sheet a minimum of 2”
PURPOSE : Creates a single surface to deter future reopening
STEP 3
HOW : Allow surface to dry and proceed to X-Bond Ensures there are no imprints and the surface is Brown Coat
PURPOSE : Ensures there are no imprints and the surface is Brown Coat ready to receive the next step