Cavity Wall Insulation

35% of your home’s heat is lost through its walls. Homes with cavity walls can be insulated to retain heat and save on energy bills.

What is cavity wall insulation?

If your home was built within the last 100 years, it’s likely you have a narrow cavity between your exterior and interior walls to prevent rainwater from permeating inside. 35% of your home’s heat is lost through its walls, and this cavity is a big contributor to that. Fortunately, it can be filled using “blown-in” insulation material injected into the wall through small drill holes, to trap heat and save energy.

How does cavity wall insulation work?

Our installers will drill small ~22mm wide holes at intervals around the outside of your property. Through these holes, we inject tiny polystyrene beads, which prevent up to 70% of heat loss through your walls and excel at filling tight cavity spaces that might be missed by insulating wool or foam. The beads are bonded with an adhesive into a strong layer of insulation, and we fill the drill holes with colour-matching mortar mix to an almost invisible finish. And that’s it!

SCIS Imperial beads

We use our own brand of polystyrene insulation beads, SCIS Imperial beads, which are 20% more efficient than traditional insulation. These beads are highly durable, water-resistant and rot-proof. Our install process ensures 100% cavity fill with no cold spots and minimal drill holes required, and because the beads are injected directly into the cavity, there’s no leftover waste to clean up. Imperial beads are BBA approved with a 25-year guarantee.

How can my home benefit from cavity wall insulation?

Defeat dampness and boost air quality.

Eliminate damp, mould and condensation from your home. With proper ventilation, you'll benefit from fresh air free of harmful pollutants and lingering odours.

Better for your wallet and the planet.

A better insulated home makes for more efficient heating usage, which means up to 30% off your energy bills and a reduction in your carbon footprint.

Enjoy a more cosy and more valuable home.

You'll feel the warmth and comfort of a well-insulated home right away, and it can boost the value of your property by as much as 3% as well.

Frequently asked questions

You could be entitled to a government grant

Your home could be eligible for free insulation through the government-backed ECO4 initiative or the Great British Insulation Scheme. Contact us to learn more.

Book a free home survey

Are you ready to improve the energy efficiency of your property?

Get in touch for guidance on pricing, funding and to book a free no-obligation survey.

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