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. The product streamlines preparation by eliminating the need for joint reinforcing tapes and bonds to most common building materials without priming.
Suitable for all climates, Joint & Seam Filler bonds directly to damp or dry surfaces and cures under a variety of weather conditions, including wet weather and on damp substrates, while tolerating rain immediately after application. It may be fully exposed to UV and weather for up to 12 months, and if longer, contact for inspection. Additionally, it is compatible with most sealants and waterproofing or air barrier components and is solvent-free, isocyanate-free, and phthalate-free.
Here are the main advantages of using PROSOCO R-Guard® Joint & Seam Filler:
- Single component - saves time, no mixing
- Bonds to most common building materials without primer
- No shrinkage, no staining, no yellowing
- Breathable - allows damp surfaces to dry
- Will not support mold growth
- Passes ASTM E84, Standard Test Method for Burning Characteristics of Building Materials
Prosoco R-Guard can be used with concrete, cast-in-place concrete, rough openings, raw gypsum board edges, and most sealants and waterproofing or air barrier components. To ensure best results, the surfaces must be clean and free of contaminants, chemical residues, surface oxidation, surface coatings, or films, as these may adversely affect adhesion.
