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Thermoguard Fire Varnish Overcoat (Exterior)

£54.00
excl tax

Thermoguard Fire Retardant Varnish Overcoat (Exterior) is for use in combination with and over Thermoguard Fire Varnish Basecoat in external applications.

ADVANTAGES

  • For timber/timber derived substrates
  • Clear, UV and wear-resistant finish
  • Certificate of Supply available
  • Certificated when used over the basecoat:
  • BS EN Class B s2 d0
  • Class 1 and Class 0

Please Select An Option

Transparent

Intended Use – Clear Fire Protection Overcoat for Fire Varnish System for Exterior Wood

Thermoguard Fire Varnish is a clear varnish system for the Fire Protection of timber and timber derived substrates to BS Class 1 and Class 0 Surface Spread of Flame as well as BS EN Class B s2 d0 (For 30 or 60 minutes Fire Resistance see Thermoguard Fire Varnish 30 & 60 Minute System). The system is made up of a basecoat and an overcoat that must be used together, the special formula provides a tough, durable finish to external wood (for interior surfaces see Thermoguard Fire Varnish Overcoat (Interior)). The clear finish enhances the natural beauty of the wood while providing protection against UV and wear as well as fire protecting new and previously varnished surfaces.

The Thermoguard Fire Varnish System is made up of Thermoguard Fire Varnish Basecoat which is a clear, intumescent varnish to be finished with Thermoguard Fire Varnish Overcoat (Interior) or Thermoguard Fire Varnish Overcoat (Exterior) available in a clear matt or satin finish (a gloss finish is available in both interior and exterior versions in batch quantities for large projects). The Thermoguard Fire Varnish Overcoats provide protection against UV, weathering (exterior grade) and wear whilst Thermoguard Fire Varnish Basecoat provides the Fire Protection.

Intumescent Fire Protection

When exposed to fire, the Thermoguard Fire Varnish System expands to create an insulating barrier, protecting timber surfaces from flames, heat and oxygen and suppressing emission of deadly smoke & gasses.

Specification and Application

Prepare and apply – (INTERIOR)

 

Prepare and apply – (EXTERIOR, DAMP, HIGH WEAR AREAS or FRUITWOODS)

 

Available Pack Sizes

 

Applicators should also refer to instructions on product containers.

Previously Varnished and Stained Surfaces or Wood Preservers

  • If preservatives are required, use rapid drying clear non waterrepellent grades**.
  • For tanalised or other preservative treatments, contact our Technical Department.

 

**Allow adequate time for stain or preservative fluids to escape before applying the Thermoguard Fire Varnish System.

Fire Test Standards and Certification

  • BS EN Class B s2 d0
  • Class 1 and Class 0

 

Note - For 30 or 60 mins Fire Resistance see Thermoguard Fire Varnish 30 & 60 Minute System.

For fire protection to doors, see Fire Door Upgrade Kits

NEW Fire Regulations and Tests Explained

  • The new fire standard BS EN test lasts 20 mins. with airflow replaces the old BS 476 tests which lasted 10 mins and restricted airflow.
  • The new standard for flamespread and heat release Class B replaces Class O.

The new BS EN tests also monitor -

  • Smoke & Gas “s” – s1 + s2 are none or very low & compliant levels, s3 moderate , s4 high smoke.
  • Flaming Droplets or Airborne particulates – dO is none, d1 some, d2 + d3 moderate > high levels.

 

Files
Data Sheet Download
safety Sheet Download

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Fire Retardant Coatings
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