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» Non-vapour-retarding insulating fibreboard

Vapour permeable, medium density fibreboard

Description
A vapour permeable underboarding for cavity-free insulated roofs. The board is made of natural-resin bonded wood fibres from coniferous woods which are impregnated with aluminium sulphate (alum). The boards are water-repellent and can serve as emergency roofing for up to 4 weeks.

Applications
- Roof sheathing
- Timber frame construction