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Cavity Wall Insulation in London

CIGA-REGISTERED INSTALLERS

Eco Systems Group installs EPS bead and blown fibre cavity wall insulation in homes across London, backed by a 25-year CIGA guarantee. We survey every property first, so you only get insulation where it’s right for your walls.

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WHY CHOOSE US

London Cavity Wall Insulation Done Properly

Many London homes were built in the 1920s or later with cavity walls, and an empty cavity is one of the biggest sources of heat loss. Older Victorian and Edwardian terraces often have solid walls instead, so we always check before we recommend anything.

• Borescope survey of your cavity before any work
• EPS bead and blown fibre insulation
• 25-year CIGA guarantee on every installation
• Drill holes neatly filled and colour-matched to your brickwork
• Failed insulation removed and replaced where needed

Solar Panel Services
2012

Established

15,000

Measures Installed

1000 +

Happy Customers

WHAT WE OFFER

Cavity Wall Services Across London

From a first-time install to fixing insulation that has failed.

EPS Bead Insulation

Bonded polystyrene beads fill the cavity completely and resist moisture, making them a strong choice for many London homes.

Blown Fibre Insulation

A cost-effective mineral fibre option for suitable cavities, installed quickly with minimal disruption.

Cavity Insulation Removal

If old insulation has become damp or slumped, we extract it, clean the cavity and refill it where suitable.

Free Borescope Survey

We inspect your cavity with a camera to check its width, condition and whether insulation is suitable.

25-Year CIGA Guarantee

Every installation is registered with CIGA for independent, long-term peace of mind.

Testimonials

Replacement of inverter
Replacement of inverter
☆☆☆☆☆
Checkatrade
The company were very customer focused and were excellent communicators. They took time to understand my problems and were able to deal with the issues through to completion. This included liaising directly with the manufacturer on my behalf and ensuring that I was able to benefit from my warranties. They are very professional and the operative has gone over and above to ensure we have a working solution. It's been a pleasure to work with them and a rewarding experience.
Solar Panel Diagnostics
Solar Panel Diagnostics
☆☆☆☆☆
Checkatrade
So impressed with Paul and Dan. From the first moment, Paul listened and was quick to get Dan round to look at the solar panel problem. Dan was amazing. He was prompt in organising a time and was able to let us know the issue and provide a solution very quickly. I wasn't sold anything I didn’t need and the cost for diagnosing and replacement parts were very competitive. Quality of service, work, and follow up has been exemplary - cannot praise them enough. We were back up and running within a week. Can't praise Dan and Paul enough. Would highly recommend. Thank you
Solar Panels & Battery System
Solar Panels & Battery System
☆☆☆☆☆
Checkatrade
You can't go wrong with Eco System for your solar panels system! Paul never got tired of my questions and patiently answered my questions with detailed information about the system. Many thanks to Paul, Ed and their installation team. Solar and battery systems installed to the highest standards. The system works magically since commissioned.
Solar Panels Check
Solar Panels Check
☆☆☆☆☆
Checkatrade
I had a broad request for help checking if my solar panels were installed correctly - Paul called me twice and talked me through the checks that I could do myself, advised me where I could get information for free and then suggested that I don't pay for a full check. He was extremely helpful and helped ensure that I didnt spend money unnecessarily.
Fix Solar Panel Issues
Fix Solar Panel Issues
☆☆☆☆☆
Checkatrade
Paul and Dan were amazing and very professional throughout. I would highly recommend their services. Thank you again!
Solar & Battery Installation
Solar & Battery Installation
☆☆☆☆☆
Checkatrade
Big thanks to Paul and Ed and his install team. Had a solar and battery system installed to the highest standard. Communication brilliant throughout and the job was completed to a very high standard. Thanks again.
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Get a Free Cavity Wall Survey in London

We install cavity wall insulation across Greater London, including Havering, Redbridge, Barking and Dagenham, Newham, Waltham Forest, Enfield, Barnet, Harrow, Ealing, Hounslow, Croydon, Bromley, Bexley, Greenwich and Lewisham.

Not sure if your walls are suitable? Our survey will tell you, with no obligation.

Expert Installers

Contact

Call our team on 0203 411 4885 to book a free survey, or fill out our contact form and we’ll be in touch.

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Frequently Asked Questions

Most homes built after the 1920s have cavity walls. Brickwork laid with all long sides showing usually means a cavity; alternating long and short ends usually means solid walls. Our free survey confirms it.

No. Walls exposed to heavy driving rain, damaged brickwork or very narrow cavities may not be suitable. That’s why we inspect every cavity with a borescope before recommending anything.

EPS beads are bonded polystyrene beads that fill the cavity completely and resist moisture. Blown fibre is a mineral wool option that’s often lower cost. We’ll recommend the best fit for your property.

Most London houses are completed in half a day to one day, with work done from outside your home.

Every installation is covered by a 25-year guarantee from CIGA, the independent Cavity Insulation Guarantee Agency.

Yes. If existing insulation has become damp or failed, we extract it, clean the cavity and refill it where suitable.