2320 /2321 Gutter and Narrow Seam Sealant is a single-component, elastomeric, semi-self-leveling, high performance tripolymer sealant designed to prevent the passage of air and moisture through small joints or seams.
- Asphalt shingles
- brick (masonry)
- sheet metal
- and other common building substrates.
- Excellent adhesion to many building surfaces, even when damp or oily.
- Exceptional ultraviolet resistance.
- Cleans up easily.
- Asphalt shingle compatible.