Solvent-Free sealant creates smooth concrete surface for coating

To eliminate bugholes before a high-performance coating is applied to a concrete substrate, a simple caulking gun is used to inject a formulated product based on a Desmoseal® resin into a void. The uncured product is then pulled flush with a putty knife, creating a smooth surface ready for coating. This process eliminates the risk of bughole-induced outgassing through the post-applied coating. Outgassing occurs when air becomes entrapped within the cavities and expands over time from the heat of an exothermic coating, thereby causing pinholes, blisters or other defects in the finished surface.

Desmoseal® S XP 2636, a silane-terminated prepolymer, is part of a new class of materials that cure with moisture from the air, or from the substrate to which they are applied. The finished products will not foam in the presence of water, and have excellent UV stability and good adhesion to concrete. The products also have very fast re-coat time and can be formulated without solvents.