Cavity wall extraction - Euro Energy Group

Click to refer a friend

Cavity Wall Extraction

Does cavity wall insulation reduce your heating bills? Yes. Does it always work? Unfortunately, no. There are three reasons your cavity wall insulation may not work: poor choice of materials, installation issues, or property damage. In these situations, you may have to remove your cavity wall insulation.

Why has your cavity wall insulation failed?

When cavity wall insulation has been installed properly, it can help you to reduce your heating bills and conserve energy. That is when it has been installed properly and has not be compromised. Before we discuss the various problems, your cavity wall insulation could be having that’s causing it to fail, it’s worth discussing the difference between solid walls and cavity walls and what cavity wall insulation involves.

What if you don’t know if you have cavity wall insulation or not? Generally, if your house was built after the 90’s, it will have wall insulation. However, if it is older, it is possible that it may not have any insulation whatsoever.

Whether you have cavity wall insulation or not, it is worth checking if you need it to help reduce your bills, an upgrade or it extracting. our friendly staff are on hand to talk you through the best decision.

Why remove cavity wall insulation?
  • Rubble & Debris in the cavity space.
  • Timber / steel frame is not suitable.
  • Void & missing cavity insulation.
  • Old foam shrinks over time.
  • Damp & mould & condensation.
  • Flood or fire damaged.
  • Wall tie replacement.
  • Building refurbishment.
  • Blocked air vents causes floor rot.
  • Upgrading cavity insulation.
  • Wet & damp cavity insulation.
How to remove cavity wall insulation​

Safety and efficiency are crucial when it comes to removing your cavity wall insulation. That’s why we use proven equipment and cutting-edge technology to get the job done properly. Taking pride in our work, our highly qualified experts remove your insulation carefully, avoiding further damage.

After your cavity wall insulation removal, you might have further questions, like what to do about leftover damp or how to install cavity wall insulation that will last. Or, you may have questions about your existing cavity wall insulation if you’re unsure whether it’s up to scratch. 

Your friendly experts at Euro Energy Group are here to help. Give us a call and we’ll answer your questions and make sure your home is safe, protected, and comfortable for you and your loved ones.

How do we remove failed insulation?

Following an initial inspection, if defects are found, a team will arrive on site and following their risk assessments will proceed to drill out the property. It will be drilled in a specialist pattern using original holes where possible. It will be necessary to open up vents and remove bricks at designated spots just above damp course level to allow exit points for the insulation to be removed.

Through the holes that are drilled, the operatives will drive compressed air through a rubber agitating whip and directional nozzle to break up and move the material to the exit points opened up.

An industrial vacuum then collects the material from the exit points and the operatives will work in a set pattern to move through the cavity ensuring that the material is removed.

The bricks are then replaced or vents installed dependent on our customers requirements


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

Why remove cavity wall insulation?

Removing cavity wall insulation is a complex process and should only be done by qualified professionals. They can assess the situation, determine if removal is essential, and then safely remove the material using specialised equipment.

In most cases, you would actually want to keep cavity wall insulation! It offers significant benefits for your home.

However, there are a few rare situations where removing it might be necessary. Here are the main reasons:

Improper Installation:

If the cavity wall insulation is installed incorrectly, it can trap moisture and lead to dampness, mould growth, or even damage the walls. In this case, removing and re-installing the insulation correctly would be necessary.

Unsuitable Property:

Certain types of properties, like timber-framed buildings, can be damaged by cavity wall insulation as it can trap moisture they need to release.

Defective Material:

Older insulation materials, particularly urea-formaldehyde foam used in the 70s and 80s, can break down and release harmful gases. If you suspect this type of insulation is present, it should be removed and replaced with a safe alternative.

Fire or Flood Damage:

If your home experiences fire or flood damage, the insulation may become saturated and need to be removed and replaced as part of the restoration process.



Fill out our online contact form

Once we get your application through, one of our team members will contact you and discuss your requirements. 


Government grant support

Our team will send you via online form, ‘Annex D: Electric Vehicle Homecharge Scheme Installation Form (V.2.4)’.