Heat-Resistant Gypsum Board

How heat-resistant ceiling board works

Heat-resistant gypsum board has aluminum foil or EPS foam on the back. The foil reflects radiant heat coming down from the roof, and the foam slows heat transfer, so rooms below stay cooler and the AC works less. Use it on top-floor ceilings directly under the roof.

Types and uses

• Foil-backed: 9 and 12 mm, 120x240 cm, for drywall ceilings, such as HeatBloc Plus and WeatherBloc
• Foam-backed: 29 mm foam-backed board plus 44 and 59 mm Gyproc ThermaLine for more insulation
• T-bar: heat-resistant T-bar tiles for shops and offices

Benefits

• Cooler top-floor rooms and lower AC bills
• Installs and finishes like standard board
• Works well together with roof insulation
• Face the foil up toward the roof with an air gap above it so it can reflect heat

Why buy heat-resistant board at OneStockHome

We stock foil- and foam-backed boards from SCG, Gyproc, Knauf HeatShield, TOA and GM with per-sheet prices, plus framing and drywall screws in the same order, delivered nationwide.