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Application

Roof fixings.

Description

Seamsil 400 roof fixing encapsulation system is designed to be a temporary repair solution to the problem of corrosion at roof fixings with a 12-month guarantee.

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.

Installed by Sharmans network of Approved Contractors, all project works are inspected and certified to exacting quality standards.

The system includes:

  • Seamsil sealant: The Seamsil sealant is gun-applied around the base of the fixing, forming a complete bridged seal and tooled off to a neat edge.
  • Seamsil base coat: Whilst the Seamsil sealant is still wet, liberally apply Seamsil base coat by brush to encapsulate and visually obscure the complete fixing detail, taking the coating onto the roof sheet by around 25 mm. 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.

Applications:

Roof fixings.

General information
Uniclass 2015 Silicone construction joint sealants (Pr_30_31_76_77)
Specification data
Product Reference

Seamsil® 400 fixings encapsulation

Standard product features

Technical characteristics:

– 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.

– Seamsil base coat:

  • Colour: Grey.
  • 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.

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