White Acrylic Elastomeric Coating System for Metal Roofs
Step by Step Application Process
1Equipment and Materials Setup
2Pressure-Washing & Rust Priming (Stoppage) Metal Roof Surface
Pressure-wash the entire roof surface, clean all gutters, and remove all unwanted, previously-applied materials. The roof must be perfectly clean to ensure proper bonding of the coating material.
Prime all rust with a zinc-chromate rust-primer and inhibitor. Rust must be stopped or else it will continue to eat through the roof and coating.
3Apply Seam Tape to All Metal Roof Seams – Lap Seams, Penetrations, Transitions, Holes
We apply this polyester-reinforced butyl seam tape to all ridge cap and end lap horizontal seams, vertical seams with more than a 1/4 inch gap, penetration seams including curbs, vents, stacks, and transition seams, including wall rakes and end rake seams. This is the first in a two-step process we call the Waterproofing System in which we seal and protect all water entry points.
4Top-Dress (Apply) Acrylic Patching Cement to All Seam Tape and Fasteners
We apply this acrylic patching cement overtop of all seam tape applied in the previous step, and also to all other entry points such as fasteners and roof holes. This is the second in a two-step process we call the Waterproofing System in which we seal and protect all water entry points.
5Spray-Apply Two Uniform Coats of White Acrylic Elastomeric Coating
We spray-apply the White Acrylic Elastomeric metal roof coating, attaining a uniform, solar-reflective, surface. The standard application requires two coats, at a minimum of 10 mils (milliliters) each, providing 15-18 years of additional roof life. This coating application requires warmer temperatures (above 50°F air) to cure properly.
OptBrush-Apply Black Liquid Rubber into Sealed, Primed, Valley Gutters (Optional)
Inside of valley gutters we pressure-wash, prime rust, scab on new metal if rust has eaten through the metal, seal all seams, top-dress with acrylic patching cement, and coat the entire brush-apply the sides and bottom of the valley gutter with a black liquid rubber. This solution lasts 15-18 years, and holds up extremely well under ponding water.