Why Should You Remove Cavity Wall Insulation?


With over 11 million properties around the UK having had cavity wall insulation installed, the benefits speak for themselves. However, our damp climate can take its toll on brickwork, leading to both external damage and water leakage. If left untreated, prolonged water penetration can affect some types of cavity wall insulation and may result in damp problems affecting inner walls. If mineral wool insulation becomes permanently damaged, the only real solution is to remove it.


How To Remove Cavity Wall Insulation:


The damaged cavity wall insulation material is removed as unobtrusively and cleanly as possible. Compressed air is blown into the cavity while an industrial vacuum collects the damaged insulation from the bottom of the wall through strategically removed bricks.

A boroscope is used to inspect the cavity throughout the process to ensure all damaged insulation has been completely removed. The old insulation is then bagged up and removed, while all the brickwork is made good.

The Boiler People provide a range of insulation services for domestic and business properties of all sizes ANYWHERE in the UK.


Cavity Wall Insulation and Damp:


Damp problems are the main reason customers call us for cavity wall insulation removal. It is usually caused by poorly maintained exterior brickwork, severe exposure to wind and rain, lack of protection from other buildings and trees, or a combination of the three. Also with the recent spell of flood weather once cavity wall insulation is wet it must be removed from the property as quickly as possible. Damp, deteriorated or poorly installed cavity wall insulation can have major negative consequences for your home, from unsightly damp and mould to increased energy bills as a result of inefficient heat retention..


Properties at Risk



Damp problems are the main reason customers call us for cavity wall insulation removal. It is usually caused by poorly maintained exterior brickwork, severe exposure to wind and rain, lack of protection from other buildings and trees, or a combination of the three. Also with the recent spell of flood weather once cavity wall insulation is wet it must be removed from the property as quickly as possible. Damp, deteriorated or poorly installed cavity wall insulation can have major negative consequences for your home, from unsightly damp and mould to increased energy bills as a result of inefficient heat retention..


The Boiler People's typical set up


The equipment consists of a compressor with high-pressure nozzles to enable the technician to blow the insulation down the cavity towards the extraction hole. An extraction hose connected to a special extraction vacuum then literally sucks out the insulation material, this is then bagged and disposed of back at our warehouse. On the extraction process we will completely clean the cavity and remove any rubble or sand build up.

A standard extraction on a typical domestic property will take around 2 days subject to weather conditions.

The Boiler People employ our own in-house team of technicians that have a wealth of experience within the house building sector, we are able to offer a varied service that includes:

• Damp proof course installation and replacement
• Part or full house re-pointing
• Damaged/distressed brick replacement
• Along with a host of other improvements/repairs to enhance your homes warmth and comfort

How we cost up cavity wall insulation removal


At The Boiler People we understand that there’s no such thing as a ‘one size fits all’ approach when it comes to your home. That’s why we provide personally tailored quotes for cavity wall clearance based on the size and scale of the job at hand – meaning you only pay for the work we carry out. To receive a no-obligation quote, simply contact a member of our team and we will be arrange a no obligation survey. Depending on the material used in the cavity, homes are usually priced per square meter:

Average house sizes are:
• Semi house 90m2
• Mid house 55m2
• Detached house 130m2
• Semi Bungalow 65m2
• Detached bungalow 90m2


Types of cavity wall insulation


There are several different types of cavity wall insulation on the market, and the cost and difficulty of removal can vary depending on the type of insulation present in your home. Removing Blown mineral fibre Insulation Mineral fibres are rigid, water repellent insulation materials most commonly used in exterior walls. Although they have strong insulating properties, they can cause major issues if incorrectly installed.

If the material is blown at the wrong pressure or an incorrect drill pattern is used, homeowners can be left with large cold patches and voids in the wall where heat can escape and damp can sneak in.

The Boiler People provide a range of insulation services for domestic and business properties of all sizes ANYWHERE in the UK.


Removing expanded polystyrene (EPS) beads


EPS insulation involves blowing thousands of small polystyrene beads into the cavity and using a binding agent or adhesive to bond them together. They are commonly used in narrow cavity spaces, and are considered more thermally efficient than mineral wool. However, degradation or poor installation can still cause major problems with damp and condensation.
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Foam insulation


Often used in homes that lack standard cavities, foam insulation expands and fills any voids or gaps in your wall on injection. Once installed, foam installation can be very tricky to extract, and requires additional preparation work for successful removal. For this reason, extraction is generally a little more expensive for this insulation type, although as with ESP and Blown Mineral Fibre, The Boiler People charges by the square meter for best value..


Your free, no obligation quote


To find out more about our cavity insulation extraction costs, call, email or fill in our quick and simple form, and a member of our team will be in touch at the earliest opportunity to discuss your requirements in greater detail. We’ll send around one of our experts if necessary and provide a full quote for extraction, including estimated timeframes. There are no hidden charges or obligations, just straightforward advice from our team of trusted professionals..


For further information please e-mail direct Info@theboilerpeople.co.uk

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The Boiler People LTD registered office address is at 13 Trinity Square Llandudno North Wales LL30 2RB. Vat Number: 283 8286 62. Company Registration Number: 09403414. The Boiler People Ltd is authorised and regulated by the Financial Conduct Authority (Firm Reference Number 812340).

The Boiler People LTD are a credit broker and not a lender and offer credit facilities with a panel of lenders.