Project Description

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Important Note:
When using Fire Varnish always ensure adequate ventilation.

Thermoguard Fire Varnish Overcoat is a part of a varnish system with the option of a clear, tinted or stained finish for Fire Protection of INTERNAL timber and timber derivative substrates.

The special water-based formula provides durable finish to internal wood.

Clear or stained finishes enhance the natural beauty of the wood while fire protecting 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 & gasses.

  • Matt or Satin
  • Clear finish — 1 coat basecoat + 1 coat Overcoat (2nd coat for wear areas)
  • Stained Varnish finish – 1 coat basecoat + 2 coats Overcoat
  • Increased UV protection for fruitwoods – 1 coat basecoat + 2 coats Overcoat
  • NOTE – for pools, heavily or regularly washed areas see Exterior Overcoat

See Data Sheets and additional information below

AVAILABLE IN:
20 square metre packs

THERMOGUARD FIRE VARNISH

Class B s2 dO + Class O INTUMESCENT CLEAR + STAINED VARNISH

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HSDS Fire Varnish

Weak White Low Opacity White Overcoat base

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HSDS Fire Varnish

Weak White Low Opacity White Overcoat catalyst

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THERMOGUARD FIRE VARNISH PROFESSIONAL LACQUER SYSTEM

Class B s2 dO + Class O
Clear, Woodshades & Opaque Lacquer for Spraybooth Application

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SAFETY DATA SHEET
NG FV OVERCOAT GENERAL

Compilation date: 12/11/2014
Revision No: 1

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Important Application Notes

Thermoguard Fire Varnish system should only be applied to dry wood , with dry conditions during application & drying of basecoat and 1 coat of Overcoat
Thermoguard Fire Varnish basecoat is a water-based 2 pack coating .
Fire Varnish Overcoat should not be applied unless the basecoat is dry .
Drying time of basecoat in good conditions is overnight .
Once the basecoat has dried in good conditions the basecoat remains ideal to overcoat for a further 4 days 
NOTE: Thereafter , the basecoat becomes gradually harder , until it reaches a point where the Overcoat may not obtain a good bond .
Thermoguard therefore recommend overcoating when basecoat is dry , within the following 4 days in good conditions.
Delamination of Overcoat caused by application to near-full cured basecoat has NEVER occurred when Overcoat was applied within 7 days
The longer the delay beyond “4 days after basecoat has dried” (so typically 5 days after application )  , the greater the risk of Overcoat delaminating .
If overcoating is dalayed notably beyond 7 days after the basecoat was dry , we advise :-
  • basecoat is abraded to obtaing a key with 120 grit abrasive
  • apply a light coat of basecoat to replace material removed during abrasion
  • apply Overcoat within the ideal window or as near to it as possible

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