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Last updated on April 12th, 2023

Cavity wall insulation removal cost guide

There are a few reasons why you may need to remove cavity wall insulation. For example, you could be having internal damp issues, or problems with vermin. The insulation may have been installed incorrectly, or is experiencing degradation. In this guide, we’ll look at the average cavity wall insulation removal cost.

There are a few reasons why you may need to remove cavity wall insulation. For example, you could be having internal damp issues or problems with vermin. The insulation may have been installed incorrectly or is experiencing degradation. It could even be the case that the insulation should never have been installed at all, as it wasn’t suitable for your home.

In some cases though, it’s simply an issue of performance. To get the very most from your insulation, you can upgrade to a more efficient or high-performance cavity wall insulation product.

In this guide, we’ll look at the average cavity wall insulation removal cost.

How much does it cost to remove cavity wall insulation?

Cost provided itemLow costHigh costAverage cost
Removing cavity wall insulation (per m2)£21£22£21.50
Removing cavity wall insulation (whole house)£1,680£2,520£2,100

Our costs are ballpark averages – get a local tradesperson to quote now

Removing cavity wall insulation is usually a relatively straightforward process. The cost depends on a number of factors including the amount of insulation to be removed and its condition. Plus, how easy or difficult it is to access the insulation.

But on average, the cost of cavity wall insulation removal starts from around £1,680 for a typical semi-detached home. But it could go up to as much as £2,520 for a typical detached property (where more insulation will need to be removed).

Cost of removing cavity wall insulation per square metre

If you want a more accurate idea of how much cavity wall insulation removal costs, you can calculate it by square metre. This is also useful if you only need the insulation removing in just one or a few walls, rather than throughout the whole house.

On average, the cost of removing cavity wall insulation per square metre is around £21.50.

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FAQsTradesperson removing cavity wall insulation

How long does it take to remove cavity wall insulation?

It usually takes between one and three days to remove the cavity wall insulation throughout a whole house.

Can I remove cavity wall insulation myself?

Just like with the installation of cavity wall insulation, removal is a specialist job. It’s recommended to call in specialist contractors, as they have the skill and expertise to remove insulation quickly. A professional also uses the most advanced extraction equipment. This means they can remove all cavity wall insulation without any damage to the walls or the rest of the property.

How can I tell if my cavity wall insulation needs removing or replacing?

If you have noticed problems with a damp build-up in your home, the cavity wall insulation could be the culprit. It’s a good idea to get the issue checked out by an expert first, before going ahead with cavity wall insulation. It could be that something else is to blame.

You should also watch out for signs (or sounds) of vermin living within the cavity wall insulation. This can cause damage to the insulation, as well as not being very pleasant to live with.

Lastly, you may want to consider replacing your cavity wall insulation if you find that it’s not working very efficiently. If your heating bills are still higher than you’d like, a home insulation assessment could recommend upgrading to a higher performance cavity wall insulation product.

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