Paramastic is a one part expandable mastic and caulk for use with Paraseal waterproofing membrane. Paramastic is a thick paste containing expandable bentonite designed to be applied over dry, damp, frozen or uncured concrete. The product reacts to and stiffens in the presence of water to form an impervious membrane.
To protect against water leakage in the areas of: Penetration, honeycombs, unfilled ties or spalled concrete. Paramastic is an important part of the Paraseal Waterproofing System - substitutions are not allowed.