Designed for use over TPO, PVC, and Hypalon, P-151 offers tenacious adhesion when paired with our 100% Silicone Roof Coatings. Single-ply membranes can often pose an adhesion problem for any roof coating. This primer actively etches into the single-ply membrane and bonds tightly to the silicone, giving it tenacious adhesion to both the membrane and the silicone coating.
Available in: Transparent Charcoal color and 5-gallon containers.
Application: Spray-applying is recommended.
Storage and Shelf Life: P-151 has a recommended shelf life of 12 months from the date of manufacture when stored in unopened containers between 40°F and 80°F. Refer to product packaging for date of manufacture.
Mix: Separation may occur prior to product application. This is normal and does not impact performance. Product should be mixed with a drill mixer for ~5 minutes prior to application.
Application: Apply P-151 until roof appears to be a consistent charcoal color. Apply at a rate of 330 square feet per gallon (0.33 gallons per square). Additional material may be required for porous substrates. Apply primer with small airless sprayer or a medium nap roller. Over-application or use of multiple coats can reduce adhesion performance. Silicone coating should be applied within 7 days.
Spray: Contact PM for specific pump, hose, and spray gun requirements.
Roller: 1¼” nap roller.
Limitations & Precautions:
P-151 should not be applied when it is raining or when the threat of rain is imminent. P-151 should be applied in only one coat. This product contains flammable solvents and is intended for use by professional contractors only. Adhesion tests should always be performed to ensure suitability of use.