BOSS® 389+ weatherproofing silicone sealant is a construction-grade sealant that provides unmatched adhesion, weather resistance and can be used on a wide variety of materials. It is a one-part, neutral cure, and low-odour sealant.
- Compatible with all structural silicone sealant.
- Good weather and temperature resistance.
- Medium modulus – with expansion/compression capability up to ± 25% of the original joint width.
- Neutral cure, with a long open time.
- Permanently elastic after curing.
- Ideally suited for weatherproofing, waterproofing, sealing of expansion and control joints, and general-purpose glazing.
- Other bondable surfaces include anodized aluminium, concrete, cement, wood, ceramics, and painted surfaces.
- Works well with ACP, glass, glazed surfaces, and galvanized steel.
This product is available in clear, white, black, and grey.
Available in 290 ml cartridges and 600 ml sausages.