Cavity wall insulation - An effective way to cut heating costs

Cavity Wall InsulationJust like loft insulation, cavity wall insulation is an effective way of cutting the cost of your heating bills and reducing your CO2 emissions by keeping the heat your home generates inside rather than letting it easily escape.

In fact, the Energy Saving Trust claims you can save up to £135 a year by having cavity wall insulation. This figure is based on insulating a gas-heated, semi-detached home with three bedrooms.

Most properties built after the late 1920s to the early 1980s have cavity walls. If the house is less than 10-years-old there’s a good chance it will already have a block of insulation fitted in the cavity when the walls were initially put up. But you will have to check with your home documentation to see if there is any information from the original builder or a survey.

If you do not have cavity walls you will need to get a quote for external or internal solid wall insulation. However, an insulation firm will be able to point this out for you.

Cavity wall insulation is a cost-effective home insulation, and a practical way of helping to cut your home heating costs. Like insulating your loft space, it has various benefits and not least that your home will be more energy efficient and therefore you’ll save money on the cost of heating your home.

Think of cavity wall insulation as a sort of blanket for your home. It will enable your home to retain heat for longer and stop heat from escaping. Given that somewhere in the region of a third of heat is lost through a property’s walls, it makes sense to install as many cost-effective insulation methods as possible. By acting to cut down on the amount of heat being lost you’ll be helping to keep your family as snug as a bug in a rug.

The main benefits include:

  • You’ll be able to save up to £135 off your annual heating bill.
  • Your home will be warmer during the cold winter months but also cooler during the summertime.
  • It’ll help to cut your carbon emissions, saving something in the region of 550kg a year.
  • It’s simple to install – in most cases it should take around 3 hours (for an averaged-sized 3 bedroom home) or certainly no more than a day.

What materials are used in cavity wall insulation?

In insulation specialist will visit your property to drill holes of approximately 22mm into the wall at 1m intervals. Then an insulation material will be pumped into the walls externally. Materials tend to be made from mineral wool or polystyrene beads.

Knauf’s Supafil Cavity wall Insulation for example is a glass mineral wool insulation that is non-combustible and of the highest quality, like all Knauf insulation products. Knauf’s Supafil 34 glass mineral wool insulation material is designed specifically for masonry cavity walls. All materials comply with Building Regulations in England and Wales and Building Standards in Scotland.

The three most popular types of cavity wall insulation material are:

  • Polystyrene granules or beads
  • Blown mineral fibre
  • Urea formaldehyde foam

Cavity wall insulation grants

According to the Energy Saving Trust cavity wall insulation costs around £500 to install, but it will depend on the size of the property. There are subsidised schemes for home insulation which can help cover the costs and, in certain situations – age-dependent or on benefits – may even be able to cover 100% of the costs.

Whatever your insulation and damp proofing needs, Builder Guide has a list of specialists in this field. Get the ball rolling by filling out a quote form today.


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