Foil Backed Plasterboard utilises a thin foil backing to provide excellent vapour resistance. The foil acts as a powerful barrier that limits moisture diffusion and prevents creeping damp. This makes it ideal for use in roofs, decks and walls.

Is foil backed plasterboard necessary?

You should only use foil backed plasterboard as a preventative measure, or in combination with other damp proofing methods. Really it should be an additional layer of protection, and not the main protection against water ingress.

Does foil backed plasterboard reflect heat?

Whilst there will be some resistance to conduction, thanks to the air gaps between the layers of foil, most of the performance of the material lies in its ability to reflect radiative heat back into the room.