Vulkem® 191 Primer is a quick drying, one-part, moisture-curing primer used as a urethane-to-urethane tie-in that prepares surfaces of cured Vulkem urethane sealants, coatings and membranes to be sealed with a fresh coat
Porous surfaces, interlaminary, urethane sealants, coatings and TREMproof membranes.
It is used to prepare surfaces of cured urethane sealants, coatings and TREMproof membranes that will be sealed with a fresh coat.
Apply with a clean brush or roller. Do not apply in excess or allow to puddle. Use a short nap roller only. Dry time is 15 to 30 min at 70 °F (21˚C).
Apply coating or sealant within 1 to 2 hr after application when primer is still tacky but does not come off substrate. Primer will yellow with time if left exposed.
Do not apply in excess to other substrates not intended to be coated. Do not apply sealant or coating if primer becomes hard or glossy.
If it does, clean with a Tremco approved solvent and reprime with Vulkem 191 Primer.
Our Tremco Construction Products Group collection of companies (Tremco Commercial Sealants & Waterproofing, Tremco Roofing & Building Maintenance, WTI and WTC, Dryvit, Nudura and Willseal) continue to follow federal, state and local guidelines regarding COVID-19 to maintain a safe and productive environment for our employees. We remain committed to staying connected to one another and to you. Precautions that remain in effect:
Non-essential staff continue to work remotely
Banning all non-essential work-related travel
Increasing cleaning and sanitization of high touch areas
Banning all non-essential outside visitors
For employees and essential vendors, mandatory temperature scans, symptom monitoring and mask and social distancing policies and procedures
Please continue to reach out with questions by email and phone during normal business hours.