AP-6400 Skylight Coating

Product Fast Facts
Translucent Coating
Withstands UV Light & Extreme Temperatures
Accommodates Building Movement


United Asphalt‘s Armour Proof AP-6400 Skylight Coating is a single-component, translucent acrylic coating that withstands ultraviolet light, temperature extremes and mildew. This flexible membrane will accommodate building movement without cracking or splitting. AP-6400 is recommended for skylights or fiberglass panels.

Coverage and Drying Time

Apply Armour Proof AP-6400 Skylight Coating by using a brush, roller, or sprayer (30:1 ratio pump system). 4-7 mils dry film thickness resulting from recommended 8-12 mils wet thickness.

Coverage Rate by Substrate
Nonporous Glass Non-Reinforced Fiberglass Reinforced Fiberglass
1 Gal/200Sq.Ft. 1.25 Gal/200Sq.Ft. 1.5 Gal/200Sq.Ft.
Application Information
Required PSI Spray Rate Gal/Min Coverage Rate Gal/100Sq.Ft. Tip Size
Suitable Roof Substrates Use as part of a System
Skylights Fiberglass Panels

Preparation of Substrate: Surface must be pressure washed clean, free of all loose particles, dirt, debris and other contaminants that could inhibit adhesion. Wire brushing may be recommended in addition to pressure washing the surface. The surface must be completely dry to prevent blistering of the product. Refer to the Armour Proof Coatings Specification for detailed instructions on how to prepare the specific substrate.

Limitations and Precautions: Do not apply when temperature is below 40°F during application or drying time. Apply product when relative humidity is below 90°F. Allow for adequate dry times between coats and inclement weather. Higher humidity or lower temperatures will slow down dry times.