P-160 is a high quality, plasticizer free, single component, water based, acrylic primer designed for application over smooth asphalt roof surfaces. P-160 is formulated to act as a barrier between the asphalt surface and the silicone roof coating. Bleed-block primer prevents yellowing of the coating due to chemicals bleeding out of the asphalt roof. P-160 can be applied with spray, brush, or roller. Spray application is preferred.
Limitations & Precautions:
Surface must be clean and dry. P-160 is water based and requires evaporation to cure. Material must cure for at least 24 hours. Low temperature and high humidity will slow the cure process. In these situations, even longer cure times will be necessary. Note: Blistering will occur if top coat is applied over base coat that is not completely dry. Do not apply P-160 Bleed Block Primer if there is any moisture on the substrate or risk of precipitation.
P-160 Bleed Block Primer is available in 55 gallon and 5 gallon containers.