Did you know that up to 25% of heat loss or gain is through un-insulated walls?

Our engineered blow-in insulation solutions will increase thermal performance saving you money and making your home more comfortable all year round. The process of installing insulation is non-intrusive and will add value to your home by upgrading to modern standards. By doing so, you will benefit now and in the long term.

Supafil® CarbonPlus is a premium, engineered blow in glasswool insulation system, ideal for walls in existing homes.

It is a high performing silicone treated product that displays exceptional thermal performance and has a proven track record in the UK over many years.

  • •  Excellent thermal performance
  • •  Save on energy costs
  • •  Non-combustible
  • •  Trusted insulation solution
  • •  Excellent coverage – fills all gaps and voids


Supafil® CarbonPlus is a high performance solution for walls in existing homes. It fills the cavity, maximising the potential thermal performance. Unlike other solutions that require the existing lining to be removed, Supafil® CarbonPlus can be installed through small holes made in the existing internal lining. Supafil® CarbonPlus should only be installed by Approved Installers to ensure the highest quality and installed performance.

Install Instructions

The insulation is blown into the wall cavity space by Approved Installers. Supafil® CarbonPlus is installed through an existing lining or a material veil (BIB) is attached to the inside framing. The newly formed or existing cavity is then completely filled with Supafil® CarbonPlus. The insulation will fill all gaps and voids and around pipework to ensure complete, even coverage. After installing the insulation an appropriate lining is applied. The process is quick and clean will provide minimal disruption – it will be completed before you know it.

The installation of insulation will only be carried out once a full assessment of the suitability of the property and area to be insulated has been completed.