ARC Rockfibre Insulated DPC is a fire rated cavity closer designed to close the cavity around window and door reveals in conjunction with a return block, fitting between the return block and inner edge of the outer skin of brickwork. The rockfibre insulation will help prevent cold bridging and eliminate moisture, mould and staining from around windows and doors, while the DPC is embossed to assist mortar adhesion. In order to achieve a fire rating the closer must be installed with a 15mm compression fit.
ARC Insulated DPC is easily installed as the brickwork progresses and before the window or door is fitted. The DPC should sit against the inner side of the outer brickwork to prevent moisture pentration. When joining it is recommended to lap the DPC by at least 100mm and to ensure the insulation is tightly butted with no breaks.
ARC Rockfibre Insulated DPC has been fire tested at Warrington Fire Research, achieving up to four hours fire integrity with traditional masonry brick and block construction. These tests comply with BS 476: Part 20: 1987. Certifire scope: CF5410.
Where usage falls outside of this scope, for example when used with external cladding, or with an internal metal frame system, performance of the fire barrier will depend upon the structural integrity and fire performance of the surrounding construction.
Key Features:
- Up to Four hours fire integrity
- Closes cavity around window and door reveals.
- Prevents cold bridging.
- Insulated with Non-combustible rockfibre mineral wool.
- Use in conjunction with a return block.
- 15mm compression fit.
- ARC Insulated DPCs have a Green Guide rating of A+.
