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Seamsil® 100 for Cut Edge Corrosion 15 year BBA - Seamsil Cut Edge corrosion treatment

Verified by manufacturer 4 months ago

HD Sharman Ltd. Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

Long-life solution to the problems of corrosion at cut edges and overlap joints on all types of profiled metal roofs.

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Application

Suitable for use on profiled metal roofs, including marine/ coastal environments. Seamsil included within Delcote architectural coating system.

Description

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


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.
  • 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.


System components and installation application:

  • 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.


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.

General information

Color

Grey

Sealant, base coat and top coat.

Brown

Green

White

Finish

Plastisol

Material

Silicone

Shape

Formless

Liquid applied coating.

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

15 year

  • System material components are fully guaranteed to perform in line with manufacturer specification for the duration of the guarantee. If there is a failure of the system material components, manufacturer will repair or replace as appropriate at no cost.
  • Correct installation/ application methodologies prescribed by the manufacturer are critical to the lifetime performance of the gutter and roof refurbishment systems. The manufacturer Approved Contractor Network receive comprehensive survey and installation training at one of two purpose built training centres. Following review and approval by the manufacturer Technical Team, the Guarantee is issued.

Uniclass

Ss_40_90_60_85 Special coating systemsPrimary
Pr_60_55_96_15 Corrosion inhibitor chemicals

CAWS

H31/110 Metal

H31/120 Metal

H31/10 Metal

Specification data - Special coating systems

Initial coats

Seamsil Base Coat.

Finishing coats

Seamsil Top Coat, Goosewing Grey.

Seamsil Top Coat, Albany Grey.

Seamsil Top Coat, Slate Grey.

Seamsil Top Coat, White.

Seamsil Top Coat, Hamlet Moreland Green.

Seamsil Top Coat, Olive Green.

Seamsil Top Coat, Vandyke Brown.

Seamsil Top Coat, Other.

A wide range of colours is available on request, consult manufacturer for details and insert requirements.

Sealing of internal movement joints

Seamsil sealant (at overlaps) prior to base coat application.

Sustainability data

Contains Red List materials

No

Country of product manufacture

United Kingdom

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

20/5804

BBA Agrément Certificate

BBA Agrément Certificate

20/5804

Literature

Seamsil 100 system specification

Seamsil 100 system specification

Seamsil Colour Chart

Seamsil Colour Chart

Seamsil top and base coat product data sheet

Seamsil top and base coat product data sheet

Seamsil 100 product data sheet

Seamsil 100 product data sheet

Case studies

Newhall Walk Retail Park, Sutton Coldfield

Newhall Walk Retail Park, Sutton Coldfield

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