Quick roll-on application facilitates easy peel and stick. DIY installation; prevents any remaining dust on subfloor from interfering with bond of Peel and Heat Complete mat to subfloor. High-tack water-based primer used for indoor applications, sold as a concentrate. Mixed either at jobsite with clean water or used in full concentrate form, depending on condition and porosity of substrate. Sets up tacky within 30 minutes - peel and stick mats go down securely, no walking, no repositioning required.