Party Wall DPC

ARC Party Wall DPC is designed to be installed as the brick and block work progresses, requiring only a friction fit within the cavity. No mechanical fixing is necessary. This product does not require a compression fit. Accuracy of brick work is essential to ensure no gaps exist around the barrier.

Vertical Installations:

The internal block work should be completed first. The ARC Party Wall DPC is then installed against this, with the brickwork being laid tight against the DPC, ensuring the barrier is tightly fitted with no gaps. The barrier should be oriented so that the 100mm lap of DPC is at the bottom of each length, this lap should run in front of the length below.

Horizontal Installations:

As the brick and block work progresses, set the large flange of DPC into the mortar between two courses of block (as shown overleaf). The height for this should be chosen so that the barrier sits against the edge of the floor, and the DPC is tight with no sags.

Tips for successful installation:

Ensure that the built cavity width is appropriate for the size of barrier being installed. If necessary bring together the internal and external leaf, as gaps cannot be present around the cavity fire barrier. Where it is necessary to join lengths together, these should be tightly butted ensuring there are no gaps in the insulation.

The coloured polythene encapsulation does not need to be removed at joints, but care should be taken to ensure that excessive polythene does not cause any gaps in the insulation itself.

If a shorter length is required, for example at the top or end of a wall, it is recommended to use a knife to cut through the DPC in the required position, and then to cut through the polythene and insulation using a small hand saw. The coloured polythene encapsulation does not need to be removed, and offers product identification once installed. Care should be taken to ensure the mineral wool is not damaged.