“Megastructures –Building from Disaster,” Channel 5

Simultaneous parallel tests were carried out to 1 x 18mm uncoated softwood boards and 1 x 18mm softwood board treated with Thermoguard Timbercoat 30/60 Basecoat the documentary film showed that:

After 6 mins uncoated board burnt through

After 45 minutes boards protected with Timbercoat @ 600 microns/ 7 m per 5kg lost only 3mm to char with the protected board retaining insulation so that it was safe to put hand on reverse face even with the burner continuing on the front face.