Does Adding Insulation Save Money?

By Jamie Orr
Date 09/12/2021
does adding insulation save money?

Like any home improvement, adding insulation comes at a cost. But unlike new carpets or a kitchen remodel, insulation could actually give you some of that money back over time. In this post, we’ll take a closer look at external wall insulation savings and how much insulation can save you.

How does insulation save money?

Along with your roof, floors, doors and windows, external walls make up the majority of your home’s thermal envelope. They separate the outside from the in, which is fundamental to external wall insulation savings.

Poorly or non-insulated walls will allow heat to escape the building, which makes it harder to maintain a comfortable temperature inside. That means keeping the heating on for longer to stay warm, resulting in sky-high energy bills.

In contrast, adding insulation saves money because it keeps heat inside. This is true for your walls as well as your roof (with loft insulation).

How much can insulation save you?

The next question is how much does insulation save? The answer naturally varies on the kind of insulation in question, how effective it is, the size of your home, and the typical cost of your heating bills.

That said, the Energy Saving Trust’s figures for cavity wall insulation are a good indication of how much insulation can save you:

  • Detached house - £610
  • Semi-detached house - £475
  • Mid-terrace house - £390
  • Detached bungalow - £460
  • Mid-floor flat - £345

It’s worth noting that cavity wall insulation is unsuitable for unsheltered walls, those exposed to wind-driven rain, and houses with solid walls. It’s also problematic for walls with existing damp problems. Learn more in our post on alternatives to cavity wall insulation.

Does adding insulation save money elsewhere?

Going beyond your energy bills, there are a few other ways you could save money by choosing the right external wall insulation.

CorkSol SprayCork forms a water-repellent layer on the outside of your building. That stops rainwater getting at your brickwork and pointing, and also prevents rising damp entering through external walls. In this case, adding insulation can save you money on repairs, redecorating and maintenance.

On top of all that, SprayCork is flexible and highly durable. The cork-based coating won’t crack with natural movement and heat changes. It also comes with a 25-year guarantee, saving you money compared to short-lived alternatives like standard render or exterior wall paint.

Save money with high-quality insulation

Does adding insulation save money? The answer is a resounding yes. Insulating your external walls with SprayCork can reduce your heating bills by 15% as well as providing a stylish, long-lasting, water-resistant finish for your home.

If you would like to find out more about the process or get a quote for your property, our team and network of approved applicators are on hand to help. Call us on 01484 442420 or email [email protected] to get the ball rolling.

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