TDI Cavity Closers & Insulation

Polypipe TDI manufactures a full range of insulated DPCs and thermal insulation systems, designed to comply with the thermal resistance requirements of Part L Building Regulations

The right quality to comply, the right choice to fit

Our specialist knowledge ensures that our products comply with all necessary building regulations, while our breadth of range covers a multitude of different applications - including solutions for open and closed cavities, party walls, loft hatches and specialist fire resistance options.

Our fire rated products are rigorously tested by Warrington Fire and can provide between 30 minutes and two hours of fire integrity, depending on the application.

  • Energy Saving Solutions

Our extensive offering of insulation products are specially designed to assist in increased energy saving, thermal and acoustic requirements in construction.


  • Fire Resistant Solutions

When it comes to fire resistance, we offer a range of insulation systems thoroughly tested for fire integrity by Warrington Fire Research. These products are designed to meet the needs of many different applications, including solutions for open and closed cavities, party walls and loft hatches.