Universal Primer Pro is a premium, one component. Interior acrylic primer designed for use with Bostik’s line of underlayments and patches. Primer Pro’s deep penetrating formulation can be used on a wide variety of substrates including concrete, wood, well bonded VCT, epoxy, tile, gypsum underlayment, cutback and other adhesive residues not affected by water. Primer Pro is rapid drying solution. Adhere to both porous and non-porous substrate.