AS-100 is a premium interior / exterior acrylic primer designed for use with CMP’s line of underlayment's and toppings. AS-100 can be used on a wide variety of substrates including concrete, wood, well bonded VCT, Epoxy, Gypsum underlayment, cutback and other adhesive residues not affected by water. AS-100 is quick drying and with a unique ability to bond to both porous and non-porous substrates.