A gutter joint repair system using Seamsil sealant and base coat.
Features and benefits:
- Weather and ultraviolet (UV) resistant.
- Proven corrosion resistance.
- Encapsulates the damaged area to restrict further deterioration.
- Water repellent seal.
- Primer-less adhesion.
- Remains tough and flexible, and is designed to withstand normal surface movement, ensuring continued optimum performance even in aggressive environments.
- Dry film thickness (complete system): Minimum 350 microns.
- Long life protection in elasticity and encapsulation.
- Silicone systems do not degrade by chalking and do not have self-cleaning properties.
System components and installation application:
- Sharman's Barrier Primer: Bitumen and other volatile materials must be removed. Any remaining residue must be primed with Sharman's Barrier Primer.
- Seamsil sealant (at overlaps): Seamsil® Sealant is gun-applied into the joint of the gutter and around the base of the bolts/fixings forming a complete bridged seal.
- Seamsil base and top coats: Whilst the Seamsil® Sealant is still wet, apply Seamsil® Base Coat by brush at a minimum wet film thickness of 220 microns. Allow to cure to a tack free state. Seamsil® Base Coat should be applied at least 25 mm either side of the gutter joint, ensuring complete coverage of the joint and bolts/fixings.
Seamsil base and top coats:
- Chemical base: Silicone coating in a spirit carrier.
- Specific gravity: 1.22.
- Shore A Hardness: 20 (approximately).
- Dry film thickness: Complete system – 350 microns (minimum).
- Time to full cure: 10–14 days.
- Solids content: By volume – 80%.
- Movement accommodation: ±50%.
- Elongation at break: 750%.
- Tensile strength: 1.6 N/mm².
- Application temperature: 3–60°C.
- Dew point: Surface to be 2°C above the dew point.
Seamsil sealant:
- Chemical base: Alkoxy silicone, room temperature vulcanizing.
- Colour: Grey.
- Specific gravity 1.39.
- Shore A Hardness: 20 (approximately).
- Time to full cure: 10–14 days.
- Movement accommodation: ±50%.
- Elongation at break: 700%.
- Tensile strength: 1.6 N/mm².
- Application temperature: 3–60°C.
- Dew point: Surface to be 2°C above the dew point.