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100% Government Funded

Cut your energy bills by hundreds each year with free internal wall insulation, fully funded through the UK government-backed scheme.

Enjoy a warmer, more energy-efficient home thanks to insulation and other energy-saving upgrades — all at no cost to you.

Improve Your Home's Efficiency with Internal Wall Insulation

Internal wall insulation is a highly effective way to reduce heat loss and lower your energy bills — all while making your home warmer and more comfortable.

On this page, you'll discover why internal wall insulation is so important, the different types available, the key benefits, how the installation process works, and simple maintenance tips.

Whether you're just getting started or ready to upgrade, this guide has everything you need to know.

Internal wall insulation in a modern living room
Internal wall insulation installation process in progress

What is Internal Wall Insulation / Solid Brick Wall Insulation?

Internal wall insulation involves applying insulating materials to the inside of your external walls. It's especially beneficial for older homes with solid brick walls that don't have cavity spaces — which is why it's often called solid wall insulation.

By creating a thermal barrier, this method helps prevent heat from escaping in the winter and keeps your home cooler in the summer, making your living space more energy-efficient and comfortable year-round.

IWI Simple Installation Process

Fitting internal wall insulation is quick and simple. We finish with the painted wall in the colour of your choice so you can enjoy your new cosy home.

Step 1: internal wall insulation boards fitted
1

Insulate

The wall is fully fitted with quality insulation.

Step 2: plasterboard fitted over insulated wall
2

Plasterboarded

The wall is fully plasterboarded and covers the entire wall.

Step 3: insulated wall plastered to a smooth finish
3

Plastered

The wall is fully professionally plastered with a smooth finish.

Step 4: decorated insulated wall ready for use
4

Decorated

We fully paint the wall with the colour of your choice.

How does internal insulation benefit you?

With energy prices on the rise and the cost of living climbing, more homeowners are looking for smart ways to make their homes warmer and more cost-efficient.

Did you know that up to one-third of your home's heat can escape through the walls? Internal wall insulation is a powerful solution — especially for homes with solid walls — helping you retain heat, reduce energy use, and cut your bills.

Stop Heat LossCreate a thermal barrier that helps keep warmth inside your home.
Save MoneyCut your heating bills by up to £320 per year*, depending on your property type.
Lower EmissionsReduce your carbon footprint and contribute to a greener future.
Year-Round ComfortStay warm in the winter and cool in the summer.
Boost Your EPC RatingImprove your home's energy efficiency and overall value.
Fast, Professional InstallationCarried out by fully qualified contractors.
Affordable with GrantsAccess government-backed funding to cover installation costs.

* Energy Saving Trust