PROSOCO R-Guard® Joint & Seam Filler is a gun- grade, crack and joint filler, adhesive and detailing compound that combines the best of silicone and polyurethane properties. This single-component, fiber-reinforced, Silyl-Terminated-Polymer (STP) is easy to gun, spread and tool.
Use Joint & Seam Filler to fill openings and create transitions where flexible reinforcement is required to bridge larger gaps and provide continuous support of fluid-applied flashing membranes, waterproofing or air barrier components.
Suitable for all climates, Joint & Seam Filler bonds directly to damp or dry surfaces and cures under a variety of weather conditions. It dramatically reduces surface preparation time by eliminating the need for reinforcing tapes at sheathing joints, inside and outside corners.
Use Joint & Seam Filler as part of a continuous, building-wide air barrier system, or to prepare surfaces for conventional waterproofing or air barrier components. Joint & Seam Filler may also be used to repair cracks or fill voids after the primary R-Guard air barrier has been applied.
Streamlines preparation by eliminating the need for joint reinforcing tapes.
Silane functional polymer provides superior long term adhesion, crack filling and weathering characteristics.
Bonds to most common building materials without priming.
Single component saves time – no mixing.
Bonds and cures in wet weather and on damp substrates. Tolerates rain immediately after application.
May be fully exposed to UV and weather for up to 12 months depending upon conditions. If longer, contact for inspection.
Compatible with most sealants and waterproofing or air barrier components.
Solvent free. Isocyanate free. Phthalate free. • No shrinkage. No staining. No yellowing.
Breathable – allows damp surfaces to dry.
Will not support mold growth.
Passes ASTM E84, Standard Test Method for Surface Burning Characteristics of Building Materials.
Illustration depicting the use of PROSOCO R-Guard® products are available at www.prosoco. com by downloading the R-Guard Installation Guidelines.
Not for use as a liquid flashing membrane. Use R-Guard FastFlash®.
Not for use in place of appropriate through-wall flashing. See R-Guard SS ThruWall product literature.
Not for use below grade or in locations which are continuously immersed in water.
R-Guard Joint & Seam Filler is compliant with the US Environmental Protection Agency’s AIM VOC regulations. Visit www.prosoco.com/voccompliance to confirm compliance with individual district or state jurisdictions.
Always read full label and SDS for precautionary instructions before use. Use appropriate safety equipment and job-site controls during application and handling.
24-Hour Emergency Information: INFOTRAC at 800-535-5053