ARC Party Wall DPC enables the closing of an external cavity at either party wall or party floor junctions where building regulations require the use of a mineral wool closer for acoustic insulation purposes.ARC Party Wall DPC is designed to be friction fitted at the party wall junction within amasonry cavity as the brick and block work progresses, no mechanical fixing is required.The DPC goes against the inner side of the external brickwork, while care should be takenbutt joints are tighly fitted with no gaps remaining. The barrier must fully fill the cavityfrom brick to block, with any cavity insulation cut back.ARC Party Wall DPC has been fire tested at Warrington Fire Research, achieving up to fourhours fire integrity with traditional masonry brick and block construction.Key Features: Up to four hours fire integrity. Specified in semi-detached houses, apartmentsand major projects. Complies to Robust Detail Part E andBuilding Regulations. Can be manufactured to suit cavitywidths up to 300mm. Easy to install. Available in different sizes. DPC has a Green Guide rating of A+.