Vulkem Primer #171

Vulkem® Primer #171 is a quick-drying, one-part, moisture-curing primer that enhances adhesion to concrete, plywood and other porous substrates where Vulkem® urethane sealants, membranes or coatings will be applied. NOT for use in Canada.
 
Basic Uses
Porous surfaces, urethane sealants, Vulkem Coating Systems and TREMproof membranes. 
Quick-drying, one-part, moisture-curing primer. 
It is used as an adhesion promoter for Vulkem brand urethane sealants and coatings and TREMproof membranes on porous surfaces such as concrete and wood. 
Apply generously with a clean brush or roller. Do not apply in excess where it will puddle or pond. At 70 °F (21˚C), allow 30 to 45 min for primer to become tacky before applying sealant, coating or membrane. 
Do not allow primer to dry completely. Do not apply sealant or coating if primer becomes hard or glossy. 
If it does, clean with a Tremco approved solvent and coat with Vulkem Primer #191 QD.