Bradford Fireseal Party Wall Batt is an insulation material specially formulated to provide fire protection. It is manufactured from a molten mixture of natural rock and recycled blast furnace waste products, bonded with thermosetting resin.
Fireseal has remarkable resistance to shrinkage at temperatures encountered in fire conditions. This stability is well beyond that of normal rockwool or glasswool insulation materials. The product can be identified by its dark brown appearance.