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Cavity Wall Insulation

Cavity Wall Insulation

CWI Crop

The highest proportion of heat loss from your home is through the cavities in your walls. Up to 35% can be lost indicating how much energy we consume in excess of what we actually require.

Karnheath Ltd installs BBA approved product Guardian 37 white glass wool to ensure minimum loss of heat as well as reducing utility costs and improving the energy efficiency of your home.

Key Benefits

  • One of the most effective energy savings measures to install.
  • Quick, simple and mess free to install
  • Saves money on rising utility costs year on year
  • Reduces carbon emmisions

Grants & Costs

For those receiving qualifying benefits, grant funding is available under the new government initiative scheme ECO. Please visit our Grants page for further information.

For those not in receipt of benefits, you can arrange a free no obligation quote by phoning 0800 378274. Cavity wall installs can be done for as little as £299 and interest free payment plans are available to everyone.

Utility Bill Savings

It has been calculated that the average semi-detached  property can make an average saving of up to £140 year on year* helping combat ever rising utility charges.

*Energy Savings Trust (correct as of December 2012)


All cavity wall insulation work carried out by Karnheath Ltd will come with a 25 year guarantee from independent organisation CIGA (Cavity Insulation Guarantee Agency) following installation.

Copyright 2013 Karnheath ltd. All rights reserved.