A complete and simple solution to thermal bridging where the cavity is closed, ie inner blockwork is returned into the cavity.

The product is installed into the cavity between the inner blockwork and outer brickwork as the construction of the walling proceeds, providing both insulation and damp proofing.

This helps to prevent problems such as condensation, leading to possible staining and mould growth, which are associated with poor thermal bridging around doors and windows.

Polypipe TDI produce a range of insulated DPC's with both standard and fire retardant insulation.