Product Description
Thermoguard Fire Varnish Overcoat Satin is a water based, clear UV and wear resistant varnish. This is part of a varnish system that has the option of a clear, tinted or stained finish. Water-based formula provides durable finish to internal wood. Clear or stained finishes enhance the natural beauty of the wood. Provides fire protection to new and previously varnished surfaces.
When exposed to fire, Thermoguard Fire Varnish expands to create an insulating barrier, protecting timber surfaces from flames, heat and oxygen and suppressing emission of deadly smoke & gases.
- for fire protection of interior and exterior wood.
Also available in a Matt finish.
Application by painters, decorators & other professional users only.
Refer to instructions on Fire Varnish Base & Overcoat containers.
Application Conditions
During application & drying of the full system:-
Ensure surfaces are thoroughly dry – max 18% moisture content.
Maximum relative humidity RH 75%.
Ensure adequate ventilation.
Minimum air temperature 6°C. Minimum surface temperature 3°C above dewpoint – avoid condensation.
Preparation
Cover, countersink & fill, or use non-ferrous, galvanized, stainless or sheradised fittings
Ensure surfaces are dry, clean and free of all contamination.
Varnished, sealed or non-porous wood should be abraded thoroughly with medium grade
silicone carbide abrasive when dry to provide a good key.
Application
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, please contact us)
Prepare and apply – (INTERIOR)
1 coat of Thermoguard Fire Varnish Basecoat
1>4 days after Basecoat is dry, apply 1 coat of Thermoguard Fire Varnish Overcoat Matt or Satin Clear or 2 coats of Thermoguard Fire Varnish Overcoat Matt or Satin Woodstain Colour.
An additional coat of Thermoguard Fire Varnish Overcoat is required for external application.
Please note: Timber must be clean and thoroughly dry prior to application (maximum 18% moisture content). Any gaps should be sealed with Thermoguard Intumescent Mastics
NOT suitable for the topside of floor surfaces that will be walked on.
Cleaning
Return as much unused material to its original container as possible. Wash brushes, rollers and guns with clean waters immediately following use.
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