Internal Wall Insulation
Solid walls offer flexible insulation options to improve your home’s comfort and energy efficiency. Internally, rigid insulation boards can be applied directly to existing walls or installed within a studded framework filled with insulation materials like mineral wool or sheep’s wool.
Alternatively, external wall insulation adds a layer of insulating material to the outside of your home, often finished with a durable render or cladding. While internal insulation tends to be more budget-friendly and can be done room by room, external insulation provides added benefits despite a higher upfront cost.
In the UK, around 28% of homeowners live in solid wall properties—over 7 million homes—most of which were built before the 1930s. Many of these homes can benefit greatly from modern insulation solutions to reduce heat loss and boost energy efficiency.
At Nexus Eco Built, we help you explore the best insulation options tailored to your property and budget, ensuring a warmer, more comfortable home year-round.
Internal Wall Insulation Needs a Personalised Touch
Insulating your walls from the inside is a practical way to boost energy efficiency—especially in older properties with solid walls. But it’s not a one-size-fits-all solution. Factors like room size, existing wall structure, and how you use your space all influence the ideal approach.
At Nexus Eco Built, we understand that every home is different. Our team takes the time to assess your property and recommend the most suitable internal insulation method—whether it’s rigid insulation boards or stud wall systems.
We’ll help you make your home warmer, more energy efficient, and comfortable, all while ensuring minimal disruption and compliance with UK building standards.
Stop Energy Bills from Slipping Through the Walls
Smart Energy Savings with Internal Wall Insulation
Energy doesn’t just escape through the roof—it seeps out through your walls too.
Internal wall insulation is a smart, cost-effective way to tackle that. Easier to install than external insulation, it keeps your home cooler in summer and warmer in winter.
By reducing heat loss, you’ll cut your energy bills and shrink your carbon footprint.
In fact, the Energy Saving Trust estimates that internal wall insulation can save you up to £445 a year—money that stays in your pocket while making your home more eco-friendly.
How Internal Wall Insulation Works?
Internal wall insulation is fitted to the inside of your home’s exterior-facing walls (not shared walls with neighbours). It involves attaching insulation boards to the wall, then covering them with plasterboard. Once installed, these walls can be decorated just like any other in your home.
This method is ideal for older or listed properties where changes to the exterior aren’t permitted. At Nexus Eco Built, our assessors and engineers follow the latest PAS2030 standards—ensuring every installation is safe, effective, and designed with your entire property in mind.
Before we begin any insulation work, we carry out a thorough property assessment. If we find any signs of damp, we’ll address it first—so your insulation performs as it should, long-term.
This attention to detail sets modern insulation practices apart from the past, where shortcuts often led to bigger problems later on. With PAS2030, the focus is on energy efficiency, cost savings, and contributing to the UK’s commitment to net zero carbon emissions by 2050.
Why Nexus Eco Built
Being loft insulation specialists, we have helped thousands of residents by just topping up the insulation level within the loft.
Our internal installers are fully qualified and have years of experience which we value highly.
All our loft insulation jobs come with
- 10 year manufacturer’s guarantee
- 2 year workmanship warranty
- TrustMark certificate for the lifetime of the installation
