Cavity Wall Extraction

What is it?

A Cavity Wall is a wall formed from two thicknesses of brickwork or blockwork with a space between them.

Weather Damage – The weather in the UK can take its toll on the brickwork of your property, which will open small gaps that allow water and moisture to gain access to the cavity.

Cavity Wall Insulation – The insulation works by minimising heat loss.  Once the insulation becomes damp or wet, this energy saving behaviour is greatly reduced. Instead of saving money, dampness and cold penetrate the cavity through the moisture inside the wet insulation.

Damp – Wet insulation will cause damp problems inside the home, damage to the property and rust on the wall ties.  Also, because the insulation is inside a cavity, it is almost impossible for it to dry out necessitating cavity wall extraction in Bournemouth and the rest of Dorset.

Cavity wall insulation can cause problems if:

  • It’s old and worn.
  • It was installed incorrectly.
  • Your home is in a high exposure area (find out if yours is below).
  • The cavity was not clear before the insulation was installed.
  • The structure of your home is not suitable for cavity wall insulation.
  • You have damaged walls such as cracks in the brickwork, render or pointing.
  • Blockages have entered the cavity because of building works or home improvements.

Contact us today for a no obligation quote: 0800 068 33 87

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No.1 Home

Spot the Signs


At No. 1 Home, we routinely carry out cavity wall extraction in Bournemouth and the rest of Dorset. We take great care to ensure the cavity wall insulation removal is as clean and effective as possible, leaving your home looking better than ever.

What to look out for:

Black Mould on Ceilings and Walls
• Damp on Internal Walls
• Cold Spots
• Excess Condensation
• Peeling Wallpaper and Bubbling Paint
• A Rise in Heating Bills

Take a look at our map to find your location and discover just how exposed you are to the wind and rain.

No.1 Home
No.1 Home

Cavity Wall Extraction


Access Cavity – The first step is to create a point of access, which involves the strategic removal of certain bricks close to the bottom of the wall.

Breakdown – Once we have access to the cavity, we are able to place the nozzle of an air hose inside, which injects high-pressure air into the cavity to break down the insulation into small pieces.

Extraction – The small pieces fall to the bottom of the cavity and are extracted using an industrial vacuum through one of the holes created by removing the bricks.

Disposal – The small pieces are collected in an industrial grade bag which makes it easy and efficient to pack up and take away for responsible disposal and recycling.

As a country, the UK is largely exposed to the elements with the majority of the country classified as either ‘severe’ or ‘very severe’. It is essential that if you fall within any of the affected areas (or even if you’re located within an area that receives ‘moderate’ coverage) that you seek out our services.

Only by removing the defective insulation through cavity wall extraction in Bournemouth and the rest of Dorset, will your home be fully protected against the elements.

We will be able to arrange a convenient date and time to visit your property and take you through the process of our cavity wall extraction in Bournemouth and the rest of Dorset.

You will receive a no-obligation quotation for the work and you will have the chance to ask any and all the questions you can think of.

If you would like to know more about how we can help get rid of defective or ineffective insulation in your property, get in touch with our industry leaders at No.1 Home today

0800 068 33 87

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What clients say


No.1 Home

The team of two worked well with a very high standard and were proud of their finished work. I was very pleased and would like to recommend them to anyone.

Mrs Mariner

No.1 Home

I was very pleased with your team today, they arrived early and I am very happy with the work carried out. My property has been left clean and tidy. I would recommend this company to anyone.


No.1 Home

The team who carried out the work at my home today was spot on, they arrived on time and carried out excellent work. They left my property in a clean and tidy order. I will be using your services again and would recommend.

Mrs Green

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367 Charminster Road, Bournemouth, BH8 9QS

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0800 068 33 87