Internal Wall Insulation – Warmth, Efficiency & Elegance from the Inside

We install insulation that blends efficiency with comfort, ensuring every wall in your home supports lower bills and warmer living spaces.

Internal Wall Insulation – Warmth & Efficiency Without External Work

Up to 30% of your home’s heat can escape through uninsulated walls. Internal wall insulation is a powerful solution—ideal when external insulation isn’t an option. It enhances comfort, cuts bills, and maintains your property’s exterior character.

Prepare for a Warmer, Healthier Home

Enhance Comfort and Energy Efficiency

Survey and Evaluate Wall Conditions

Choose the Ideal Insulation Method for Each Room

Check my Eligibility

Why Internal Wall Insulation?

The best time to improve your home’s comfort and efficiency is now. Internal wall insulation helps reduce heat loss, improve indoor warmth, and make your home more energy-smart — without altering the exterior.

Major Heat Loss

Up to 25% of heat can be lost through uninsulated internal walls — leading to cold spots and energy waste.

Lower Energy Bills

Internal insulation reduces the strain on your heating system, helping lower monthly bills

Improve Indoor Living

Enjoy consistent temperatures, reduce drafts, and enhance the coziness of your home

Invisible Improvement

Installed from outside, with no disruption to your living space. So, you can continue whetever is your work.

Accredited & Certified

We are certified by TrustMark, MCS, and Gas Safe — ensuring quality, safety, and compliance with the UK’s leading insulation and heating standards.

Free Eligibility Checks

Our team takes care of all the paperwork for ECO4, GBIS, and BUS grants, so you can focus on getting your home warmer without the stress and any worries.

We are a Full-Service Firm

From council flats to family homes, we’ve successfully upgraded hundreds of lofts across the UK. with trusted insulation solutions.

Our approach

Let’s Help You Insulate From Within.

With Energy Green Insulation Ltd, internal wall insulation is more than just thermal protection — it’s a smart way to improve your comfort and cut energy costs year-round. Whether your property isn’t suitable for cavity wall insulation or you simply want an extra layer of warmth, our certified installers use grant-backed solutions to insulate your home from the inside without major disruption.

Strategy and Planning

Every successful insulation project starts with understanding your wall structure and room usage. Our experts conduct a free technical survey to check internal wall material, moisture levels, and insulation compatibility — ensuring you qualify for funded installation.

Room Access & Preparation

We assess interior layouts, furniture positioning, and wall finishes to prepare for a smooth installation. Our team takes care to protect flooring and furnishings and works with minimal mess using dust-controlled tools.

Professional Installation

Depending on your home’s needs, we install insulated plasterboard systems or thermal linings with integrated vapour control. The process is quick and clean — boosting warmth while maintaining your home’s aesthetics and breathability.

how it works?

Our Internal Wall Insulation Process

We follow a clean and professional step-by-step process to ensure your internal wall insulation is effective, durable, and visually seamless.

Free Property Survey

Our expert visits to check for wall types, moisture, and compatibility with internal insulation.

Design & Plan

We propose insulation layout per room, including socket/furniture considerations.

Insulation Installation

High-performance insulation boards or batts are applied and sealed. This will make it clean and effective.

Plaster Finish & Clean-Up

A smooth plaster finish is applied; surfaces are cleaned and ready for redecoration.

Let’s Collaborate with Us!

Energy Green Insulation Ltd.
20 Emerald Road Luton, LU4 0NR, UK

Send mail: info@energygreeninsulation.co.uk
Call us: +44 (800) 193-1949

Frequently Asked Questions

Some frequently asked questions about the service that you may have questions about

Can this be done in occupied rooms?

Absolutely. Internal wall insulation can be installed in homes that are fully occupied. Our installers are trained to work room-by-room, so you don’t need to vacate your property. We use protective sheeting and dust control methods to keep your home clean and safe throughout the process. Furniture is either moved or covered, and we plan the workflow to minimise disruption to your daily routine.

Will it affect room size?

Yes, but only slightly. We typically use insulated plasterboard systems that are between 50mm and 100mm thick (around 2–4 inches). This includes the insulation layer and plaster skim. While there is a small reduction in floor space, most homeowners find it unnoticeable—especially when compared to the comfort and warmth it brings. In most cases, radiators and sockets are repositioned as needed to maintain functionality.

What about damp?

Damp assessment is a key part of our free home survey. We thoroughly check for any signs of condensation, rising damp, or penetrating moisture before starting work. If damp is detected, we’ll advise you on the most appropriate treatment to ensure your walls are dry and safe. Internal wall insulation should never be installed on damp walls, so addressing these issues early protects both your home and your investment.

Will I need to redecorate?

Yes, some light redecoration is usually needed. Once the insulated boards are installed and plastered, the walls will be ready for painting or wallpapering. Many homeowners use this opportunity to refresh the room’s look, update fittings, or modernise the décor. We can provide guidance on drying times and suitable finishes, so you can confidently plan your interior updates.

Are grants available?

Yes, internal wall insulation is often fully funded under the ECO4 and GBIS government schemes—particularly for homes with low EPC ratings or households on qualifying benefits. During your free no-obligation survey, we’ll assess your eligibility and handle the paperwork if you qualify. This means you could receive a complete insulation upgrade at no cost, professionally installed by a TrustMark-certified team.

Will internal insulation really make a noticeable difference?

Yes — the results are significant. Internal wall insulation can reduce heat loss through solid walls by up to 45%, making your home warmer in winter and cooler in summer. Many of our clients notice a difference in comfort within the first few days — especially in older brick or Victorian properties with solid external walls. Beyond the warmth, insulation also helps reduce noise transfer between rooms and from outside, while lowering your energy bills and carbon footprint over the long term.

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