Dowsil 784 Glazing Sealant - White

The typical shelf life is 12 months when stored in its original, unopened cartridge in a cool, dry place.

Dowsil 784 Glazing Sealant is generally not recommended for painting over due to its silicone formulation. Painting may result in poor adhesion or peeling. If painting is essential, test adhesion on a small, inconspicuous area first.

This sealant conforms to ISO 11600-G-20LM, which specifies requirements for classifying joint sealing materials for buildings.

The tack-free time is typically 30-60 minutes, and it can be exposed to rain after approximately 2 hours. Full cure can take 24 hours or more, depending on bead size and environmental conditions.

Yes, it is suitable for interior use, especially in areas prone to moisture due to its fungicide content, such as bathrooms and kitchens.

Dowsil 784 is specifically formulated as a glazing sealant with good adhesion to glass and metal and includes fungicide. Dowsil 781 is a general-purpose silicone sealant, often available in acetoxy cure, and may not have the same level of mould resistance or specific glazing performance.

The recommended application temperature range is from 5°C to 40°C.

Ensure surfaces are clean, dry, and free from contaminants like oil or dust. Verify that the surface is non-porous; primers may be needed for certain materials.

Ensure the nozzle is cut to the appropriate size for the joint. Apply steady, consistent pressure with the caulking gun. Smooth the bead immediately after application.

While the sealant contains fungicide, excessive moisture and poor ventilation can still lead to mould. Ensure the area has adequate airflow and clean any surface mould that may appear on adjacent materials.

Check the application temperature. If it's below 5°C or above 40°C, the sealant may not cure correctly. Ensure adequate air humidity, as cure is typically moisture-activated.