Product Data Sheet
Acrylic Bleed Block Roofing Primer
KNIGHTSHIELD KS-5900 is a single component, plasticizer free, water-based acrylic bleed block roofing primer.
KNIGHTSHIELD KS-5900 is intended to be applied over asphaltic roofs or asphaltic detail areas prior to the application of a reflective KNIGHSHIELD silicone roof coating.
- Low VOC content
- Water cleanup
- Dries / cures at room temperature
- Provides excellent adhesion to asphaltic surfaces
5 Gal. (18.9 L) Pails
Twelve months from date of manufacture in the original, unopened container stored at 80°F or below under shaded conditions away from sources of heat or ignition.
Surface Preparation … All surfaces to be coated must be clean, dry and free of contaminants. It may be necessary to use a cleaner and/or power wash the substrate prior to application of KNIGHTSHIELD KS-5900 to enhance adhesion.
Mixing … KNIGHTSHIELD KS-5900 is supplied as a single component product. If a clear layer is seen at the surface upon opening the container, mix until uniform.
Application Method … Apply by spray, roller or brush. Standard application rate is 16 wet mils or 1 gal / 100 sq feet but application rate may vary depending on type of substrate.
Brush – Synthetic Filament
Roller – 1¼” Nap
Spray – 3000 psi at 2.5-3.0 gallons / minute, Tip 0.17 to 0.29, 40-50° fan angle, 12-inch wand extension, 3/8″ pressure line
|Volume Solids||50% +/- 2%|
|Application Temperature Range||35° – 120° F (1.7° – 49° C)|
|Perms by ASTM 1653||3|
|Topcoat Window||Next Day|
|Rain Ready >70°F, RH <70%||3-4 hrs|
|VOC Content||<50 grams/liter|
Clean Up … With water. Soap and water may be required if partially dried.
Protect from freezing. Do not apply over wet surfaces.
Do not apply if temperature is below 35° F (1.7° C) or if the temperature will fall to within 5 degrees of the dewpoint within 4 hours of the application, or if there is a threat of rain within 4 hours of the application.
Do not heat container or store at temperatures below 35° F (1.7° C). Be sure the lid is tight and the pail is secured when transporting. Do not allow pail to tumble as this may loosen the lid and allow leakage or spillage to occur.
This product is intended for use only by professional applicators.