THERMOGUARD FIRE VARNISH
Class B s2 dO + Class O INTUMESCENT CLEAR + STAINED VARNISH
HSDS Fire Varnish
Weak White Low Opacity White Overcoat base
HSDS Fire Varnish
Weak White Low Opacity White Overcoat catalyst
THERMOGUARD FIRE VARNISH PROFESSIONAL LACQUER SYSTEM
Class B s2 dO + Class O
Clear, Woodshades & Opaque Lacquer for Spraybooth Application
SAFETY DATA SHEET
NG FV OVERCOAT GENERAL
Compilation date: 12/11/2014
Revision No: 1
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