AIM #630 Cold Process Adhesive is a premium, brush or squeegee grade, waterproof adhesive made from asphalt, solvents, and organic fibers. As a replacement for hot asphalt in built-up roofing (BUR) applications, AIM #630 Cold Process Adhesive is designed for bonding layers of asphalt coated base sheets. Can also be used to bond selvedge laps on composition and 90 lb. asphalt roll roofing. AIM #630 Cold Process Adhesive is safer, eliminating the burn and fire hazards of hot asphalt. AIM #630 Cold Process Adhesive provides greater cohesive strength for a reliable roof and is more flexible than hot asphalt in cold weather flexibility than hot asphalt.

When applying over an existing roof membrane, the roof surface must be clean, dry, smooth, and even. Blisters, buckles, and raised edges should be cut and flattened. Check flashings, edgings, drains, valleys, and vents and repair as needed.

NOTE: A roof membrane in poor condition, moisture in the existing roof, or local building codes may require tear-off of an old roof.

AIM #630 Cold Process Adhesive is suitable for application with a notched squeegee or 4-knot roofing brush. Stir adhesive to uniform consistency before using. Do not thin. Apply adhesive evenly and uniformly with full coverage between each layer.

After adhesive is applied, a few minutes of “open time” will accelerate curing time. Roofing may usually be placed up to 1/2 hour after adhesive has been applied. While adhesive is tacky, press roofing into adhesive by brooming. Roll with a weighted roller several hours later. Adhesion is improved by brushing underside of sheets at laps and walls with a thin film of adhesive. Remove excess adhesive from exposed surfaces. On laps, apply only a sufficient quantity of adhesive such that a small bead of product appears after pressing – in the lap. On slopes over 1″ in 12″, blind nail 2nd and 3rd layer 1″ down from upper edge every 12″. Not intended for vertical flashings.

Built-Up Roofing: Follow the directions of the roofing material manufacturer and follow NRCA guidelines for details and terminations.

Top Coating: Allow 30 days of warm, dry weather before surfacing BUR with emulsion and a reflective coating.

COVERAGE: Apply AIM #630 Cold Process Adhesive in uniform single coat of 1.5 – 2.0 gal/sq. as an inter-ply adhesive. Coverage varies with smoothness and porosity of surface coated. Coverage of 3.5 gal/sq. when used to bond granules or 6.0 gal/sq. for bonding gravel to roof membrane.

CLEAN UP: Remove coating from tools with paint thinner or mineral spirits. Clean hands with a waterless hand cleaner. Use care when handling solvents.