Spray-Lock FRP Spray Adhesive formula is a water-based acrylic blend spray adhesive that has milky white frost bubbles in appearance and provides immediate shear strength during installation. Spray-Lock FRP Spray Adhesive is solvent free, emits no harmful fumes, and contains 0.0 g/ml VOC (Volatile Organic Compounds) in content, according to EPA Test Method 8260B. Spray-Lock FRP Spray Adhesive uses non-ozone depleting HFC propellant.