Mark Group

Cavity Wall Insulation

The Mark Group has installed over 1 million energy saving measures in the UK since we began in 1974. We are improving energy efficiency in over 3,000 homes each week so you can be assured that our experience will give you confidence that this technical work is carried out competently and conscientiously.

An un-insulated home can lose up to 35% of its heat through the walls so it is easy to see where significant savings on energy bills can be made. Insulating the cavity between the walls will save you around £90 per year. Source EST.

Grants, provided by the Government through energy companies, are available to all homeowners and the Mark Group can access this funding to minimise the cost of installation of your cavity wall insulation. See Costs and Grants for more information.

An added bonus is that you can be safe in the knowledge you are doing something to help the environment by saving around 750kgs per year of carbon dioxide emissions.

Every domestic cavity wall installation completed by the Mark Group is guaranteed for 25 years by CIGA (Cavity Installation Guarantee Agency).

• British Board of Agrément
• Cavity Insulation Guarantee Agency
• National Insulation Association