
Keep your home warmer and reduce your bills. Take advantage of the government’s ECO4 scheme and claim FREE cavity wall insulation with the help of NEIS. We’re tackling fuel poverty and helping homeowners across the UK stay warm while lowering energy costs.
DOES YOUR HOME HAVE CAVITY WALLS?
Improve your home’s energy efficiency
If your home was built after the 1930s, it likely has cavity walls. These walls have a hollow gap between two layers of brick designed to keep moisture out, but unfortunately, they can also let warm air escape, causing drafts, heat loss, and higher energy bills.
By installing cavity wall insulation, the gap is filled to lock the heat inside. According to the Energy Saving Trust, this simple upgrade can save the average mid-terrace home up to £140 per year on energy bills.
If you receive income-related benefits, live in a property with a low energy rating, or are struggling with rising living costs, you could qualify for fully-funded cavity wall insulation at no cost to you. Check your eligibility today, and NEIS will provide this service under the government’s ECO4 scheme.

Installation 100% free!
Save money without compromising on comfort. Find out if you’re eligible for funding.
Experienced installers
Every project is managed by our expert team, ensuring clear communication and a smooth process from start to finish.
PAS2030 accredited
We’re fully certified to conduct retrofit installations for your energy efficiency upgrade.
MANAGED BY AN ACCREDITED TEAM
Cavity wall insulation: the process
At NEIS, we take the stress out of insulation. The process is straightforward. We drill small, 22mm holes in the external walls at regular intervals, then use advanced equipment to inject insulation into the cavity. Once the insulation is in place, the holes are sealed, leaving your home energy-efficient and cosy. Not only will this help keep the heat in, but cavity wall insulation also improves soundproofing, making your home quieter and more comfortable.
We’ll guide you through every step to ensure you meet the necessary requirements for funding. Our team will handle all the details, leaving you to enjoy a warmer, more efficient home.

“Absolutely amazing team from start to finish, very friendly, polite, informative, and did a great job, I couldn't be happier. A special thank you to Henry who went above and beyond with helping me with my windows. Thank you all.”