Cavity Wall Insulation

Fill the void in your walls and in your bank account

There are many different areas of your home worth insulating, with roofs and lofts receiving most of the attention. But, the real culprits behind heat loss are the walls. Even if your home was built using modern construction techniques, your annual heating bill might be 33% higher than it needs to be.

That waste is bad for the planet – and bad for your bank account.

But, uncontrolled heat loss is easy to fix and by properly insulating the walls of your home, you receive a number of additional benefits beyond annual utility bill savings.

Understanding cavity wall insulation

Homes built after 1920 usually have a 50mm or greater air gap separating the internal and external walls. This pocket of air provides some insulation, making it harder for heated or cooled air to escape.

But, poorly insulated cavity walls still transfer a tremendous amount of heat.

By filling this cavity with insulation, essentially you’re providing your home with an extra layer of thermal protection, and the process couldn’t be simpler:

  • Technicians drill holes in strategically placed locations, usually in your external walls
  • They inject one of a number of different materials, including polystyrene beads, mineral wools, or foamed insulants into the cavities
  • The technicians then refill the holes, and they’re done

Depending on the size of your home, the entire job only takes a few hours. And thereafter, you can watch the savings start to accumulate. On average, cavity wall insulation can help reduce your annual heating bill by up to £300. And those savings will only grow as utility rates increase in the future.

You might also not have to finance the project out-of-pocket.

Under the UK’s ECO program, many customers will qualify for free or heavily subsidised cavity wall insulation. This incentive essentially allows you to save money – without spending money.

Additional benefits of cavity wall insulation

The payback period of this green improvement is very short. If receiving free insulation under ECO, you breakeven on Day One. But if you finance the job on your own, the insulation should pay for itself in under five years.

A few additional things to keep in mind:

  • This green improvement also delivers substantial environmental savings. Annual carbon offsets can easily approach 1,500kg
  • Your boiler suffers less wear and tear since it doesn’t have to work as hard to keep your home warm throughout the year
  • Cavity wall insulation also helps trap cooled air during the summer

To learn more about cavity wall insulation, or the ECO program, contact the Energy Saving Team today. Also, if your home was built before 1920, be sure to read our page on Solid Wall Insulation.

Please note: cavity wall insulation is not suitable for all properties. IT IS IMPORTANT TO HAVE A PROPER SURVEY OF THE CONDITION OF THE PROPERTY BY AN INDEPENDENT PROFESSIONAL  TO CHECK THAT CAVITY WALL INSULATION IS SUITABLE. Over insulating a property can cause condensation. The correct ventilation is important to ensure a house remains warm and dry. Please contact our team for further information