BEST PRACTICES FOR GLUING DOWN
1. GIVE IT TIME
Allow a minimum of three days (five to seven recommended) after pouring concrete slab before applying glue and check for moisture.
2. PREPARE CAREFULLY
Prepare surfaces to be bonded by removing oil, dirt, dust, etc., and bond breakers, if required. Methods include a hard bristle brush/broom or, if necessary, an angle grinder with a 4½-inch cup brush or solvent cleaner. And be careful not to damage the surface of the concrete while cleaning.
Spray with the applicator nozzle facing the surface at a distance of 8-10 inches, constantly moving the applicator to prevent build-up on the substrate, and minimize overlap. More is not better!
4. FLASH TIME
Apply adhesive to both surfaces, then wait approximately 1-3 minutes for flash time before bonding the materials (depending on the environment).
5. LET IT DRY
Before bonding the surfaces, ensure that the adhesive is dry to the touch. Adhesive can remain tacky even when dry.
6. APPLY PRESSURE
Attach the materials together and apply heavy, consistent pressure. When bonding lengths of materials, make sure to leave a 1/16-1/8” gap between materials for expansion. There should be no movement in the materials after being bonded.
7. CHECK THE BASE
For forming brackets/kickers, the base should be at least 10” x 10” (100 sq. in). Extreme force from nail guns to attach forming material can damage the adhesive bond, so try to use minimal pressure or allow adhesive to fully cure before nailing. Use Sticky Sheets for instant bond.
8. WATER RESISTANCE
For reveals, use high moisture resistant materials such as MDF MR 50 or plastics. If using plastics, check with the manufacturer to ensure that the material is designed to be attached using adhesives. Do not attempt to bond wet materials.
Transforming the Industry
Click here to view GluDown’s best practices article featured in Tilt Up Today magazine.