101 Overspray Primer is an underlayment primer and bonding agent for installing Merkrete’s waterproof and crack isolation membranes under ceramic, tile and stone. 101 Overspray Primer reduces porosity factor and increases bond on most of substrates . FEATURES AND BENEFITS Reduces Porosity Factor Allowing Proper Open Time for Adhesive Enhances Adhesive Bond Adds Strength and Durability to Underlayment Increases Abrasion Resistance Provides Temporary Wear Surface for Construction Traffic
