Cavity wall insulation

Mr. Smith – Manchester

Mr. Smith’s home was losing a lot of heat through uninsulated cavity walls, leading to cold draughts in the living area and rising gas bills each winter.

Our team drilled small access holes and injected high-performance mineral wool into the wall cavities, drastically reducing heat loss and creating a much more comfortable, even temperature throughout the home, with estimated bill savings of around £200–£230 per year based on a typical gas-heated property. The work was completed in under a day with minimal disruption, and Mr. Smith is now benefitting from warmer rooms, fewer draughts and an improved EPC rating. Read more

Mrs. Jones – Nottingham

Mrs. Jones noticed that the front bedrooms were always colder than the rest of the house, with condensation forming on the external walls during colder months.

After a suitability survey confirmed clear, accessible cavities, we installed modern blown-fibre insulation to the external walls, sealing gaps where heat was escaping, which is expected to cut annual heating costs by around £150–£200 and reduce carbon emissions for this property. The installation was arranged under a government-backed insulation scheme, reducing the upfront cost significantly while delivering long-term savings. Read more

Ms. Patel – Leicester

Ms. Patel’s property was expensive to heat, and the external walls felt noticeably cold to the touch, clear signs that the cavities were not insulated.

We carried out a full cavity fill using high-quality mineral wool insulation, targeting all accessible external walls to create a continuous thermal barrier around the home, delivering projected savings of around £200 per year on heating bills and cutting CO2 emissions over the lifetime of the insulation. The upgrade was part-funded through a government scheme, helping Ms. Patel benefit from warmer rooms, lower bills and a more energy-efficient home. Read more

Cavity Wall Insulation – Costs and Savings

£5,000

£4,000

£3,000

£2,000

£1,000

£0

Semi‑detached house

Detached bungalow

Detached house

Mid‑terrace house

Mid‑floor flat

Typical cavity wall installation costs (with 20% markup in badges) and estimated fuel bill savings for gas‑heated homes based on recent UK cavity wall guidance. [web:10][web:27]

★

by Raymond Hodgson

Excellent job

Extremely polite workers who turned up on time and completed the insulation with no fuss and cleaned up afterwards.

★

by S. Begum

I wanted to express my heartfelt thanks

I wanted to express my heartfelt thanks & sincere gratitude to Simple Green Energy. Wow – I am genuinely humbled by the standard of work carried out. From the beginning to end, it was so easy and smooth. The tradesmen were simply wonderful. Impeccable manners and sincerely wanted to do their job thoroughly. I can’t praise this company enough for having such hard skilled workers who are willing to go above & beyond. They are such an asset to their own company. I highly recommend this company for all your insulation needs. Thank you from the bottom of my heart.

★

by Suraj Bhansali

Big Thank You

I recently had insulation work completed on 5 June 2025 by Simple Green Energy, and I am very happy with the entire experience. The team was professional, punctual, and explained the process clearly before starting the job. The installation was done efficiently with minimal disruption to our home, and they left the place clean and tidy afterward. I’ve already noticed a difference in how warm the house feels and am expecting improved energy efficiency going forward. The customer service was excellent – they kept me updated at every step of the process. I would highly recommend Simple Green Energy to anyone looking for reliable and quality insulation services. Thanks Suraj.

★

by Peter Sylvester

The company did all the arrangements

The company did all the arrangements for me, the team that came to do the work were on time, professional, hard working, clean, polite, highly recommended.

★

by Ken Mcness

The loft insulation and the cavity wall

The loft insulation and the cavity wall insulation was carried very well and everything was cleaned up before they left.

★

by Customer Roy Howard

It's genuine

I was extremely sceptical but I thought I'd give it a go, I received a phone call and a survey was arranged, it was very thorough. I qualified for cavity wall insulation and extractor fans, the insulation has been carried out, no mess, very polite team, I would recommend this company without reservation.

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Mr. Smith – Manchester

Mrs. Jones – Nottingham

Ms. Patel – Leicester