LOK ULTRA Adhesive Bonding Primer Seals High pH Surfaces Elastomeric Waterproofing Highly Alkali and Efflorescence Resistance Specifically Engineered for Sealing Porous Surfaces Low V.O.C. & Environmentally Friendly Easy Application and Water Clean Up Spread Rate: 200-300 Square Feet Per Gallon Technical data: Solids By Weight: 49% Weight Per Gallon: 10.2 lbs. V.O.C.: 45 g/l