PROSOCO Board Seam Filler WB | Water-Based Board Seam Treatment - Trusted by Professionals

R-Guard Board Seam Filler WB is an acrylic, gungrade, board-seam filler that is easy to gun, spread and tool. Use Board Seam Filler WB to fill seams in the field, before coating over with R-Guard FastFlash or any PROSOCO R-Guard air barrier coating. Use Board Seam Filler WB as part of a continuous building-wide air barrier system. PROSOCO packages and labels its industrial/commercial products for purchase and use by industrial, professional, and commercial customers. Unless specifically stated on the product package or applicable product literature, PROSOCO industrial products are not packaged, labeled, or intended for sale to individual consumers (ie., the general public). Always read full label and SDS for precautionary instructions before use.

• Water-based formula for easy water cleanup
• Breathable – allows damp surfaces to dry
• Single component saves time – no mixing
• Bonds to most common building materialswithout priming
• Streamlines preparation by eliminating the needfor joint-reinforcing tapes