Vulkem 191 Primer

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

Basic Uses
  • 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.

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