Seamsil® 100 for cut edge corrosion

Seamsil 100 metal protection systems are designed to provide effective long-life solutions to the problems of corrosion at cut edges and overlap joints on all types of profiled metal roofs.

A silicone based remedial treatment formulated specifically to arrest the adverse effects of rust and chemical corrosion, industrial pollution and is particularly effective in marine/ coastal environments.

The system completely encapsulates the damaged lap joint area preventing further water ingress and therefore provides maximum protection against future reverse side corrosion.

Installed by Sharmans network of approved contractors, all project works are inspected and certified to exacting quality standards - consult manufacturer for details.

The system includes:

• Seamsil sealant (at overlaps): Gun-applied into the gap between the upper and lower roof sheets, as close to the edge of the upper sheet as possible, forming a complete bridged seal.

• Seamsil base and top coats: Whilst the Seamsil sealant is still wet, apply the Seamsil base coat to form a fillet and visually obscure the leading edge of the top sheet. At edges: The area to be treated should be at least 25 mm from the edge of the roof sheet or either side of the overlap and a further 10 mm beyond the prepared area of corrosion, ensuring complete coverage of all exposed steel work. At overlaps: Apply by brush at a minimum wet film thickness of 220 microns. Work in a smooth upward motion ensuring complete coverage of all exposed and prepared metal areas. Allow to cure.

Features and benefits:

• Weather and ultraviolet (UV) resistant.

• Proven corrosion resistance.

• Encapsulates the damaged area to restrict further deterioration.

• Water repellent seal.

• Primerless adhesion.

• Remains tough and flexible, and is designed to withstand normal surface movement, ensuring continued optimum performance even in aggressive environments.

• Long life protection in elasticity and encapsulation.

• Silicone systems do not degrade by chalking and do not have self-cleaning properties.

• Seamsil sealant is particularly effective when used as a primary or secondary seal in lap joints on siphonic Poly Vinyl Chloride (PVC) Plastisol or Pvf2 coated profile cladding sheets to prevent the ingress of acid rainwater and pollution.

Applications:

Profiled metal roofs, especially in marine/ coastal environments.