PROSOCO R-GUARD POROUS PREP

R-Guard PorousPrep (formerly known as GypPrime) seals the cut edges of gypsum wall boards exposed in rough openings for windows and doors. The sealed edge makes a perfect surface for easy application of R-Guard Joint & Seam Filler or R-Guard FastFlash. PorousPrep brushes on easily and efficiently, and its glue-like viscosity reduces rundown and potential for spills. PorousPrep usually dries in less than 30 minutes. Use R-Guard PorousPrep as part of a continuous building-wide air barrier system, or to complement conventional waterproofing or air barrier components.

Product Data Sheet

Advantages

• Ensures application of Joint & Seam Filler or FastFlash to dry cut edges of gypsum wall board is fast and efficient.
• Glue-like viscosity makes application smooth and easy, while reducing potential for spills and rundown.
• Water cleanup.
• No solvent odor. 
• Treated surfaces “breathe” – does not trap moisture.

Limitations

• Not for use on wet surfaces.
• Not for use below grade or in locations which are continuously immersed in water.
• Not for use as a structural sealant.
• R-Guard Joint & Seam Filler or FastFlash should be applied to the sealed surface within 24 hours, preferably during the same working day.