Internal wall insulation

Warmer on the inside.Comfort that stays.

Help reduce heat escaping through your walls with insulation fitted inside your home. We’ll assess your property, explain the work room by room and help you explore any available funding.

Clear advice on your property, installation and next steps.

Home assessmentExpert installationSupport from our team
Installer fitting insulation between internal wall studs
Octopus Trusted Partner of the Year 2026 winner

Award-winning home energy expertise.Practical advice from your first enquiry to aftercare.

Reduce heat loss

Help keep more of the warmth you generate inside your living space.

Use energy more effectively

Improve your home’s thermal performance and reduce heating demand.

Feel more comfortable

A considered upgrade to the fabric of your home.

Understand the upgrade

Insulate the inside.
Keep more warmth at home.

Internal wall insulation adds an insulating layer to the room-facing surface of your external walls. It is often considered for solid-wall homes, where there is no cavity to fill.

The proposed system may use insulation boards or an insulated lining with a finished internal surface. We’ll explain the materials and specification suited to your property.

Discuss your home →

Designed around the building.

Your wall construction and condition determine what is appropriate. The survey should consider moisture, ventilation and how the new insulation meets floors, ceilings, windows and adjoining walls.

Any damp or building defects need assessment before work begins.

Find your starting point

Your home.
Your next improvement.

Tell us about the property and what you would like to change. We’ll help you understand the options.

Solid-wall home

Explore internal insulation

Discuss whether an internal system is appropriate for your walls and the rooms you want to improve.

Discuss my home →
Planning a refurbishment

Bring the work together

Tell us about your renovation plans so insulation, fittings and finishing can be considered together.

Discuss my home →
Not sure about your walls?

Start with an assessment

We’ll help establish the construction before recommending an insulation approach.

Discuss my home →

Plan the work inside your home

The details matter.
Room by room.

Understand the changes to your rooms before you commit. We’ll discuss the proposed scope, preparation and finishing arrangements as part of the plan.

Open a topic to see what to ask about.

Talk through my project →
Room space

The new lining reduces the internal dimensions of the treated rooms. Ask us to explain the proposed build-up and how it affects the layout.

Fittings and services

Radiators, sockets, skirting and other fittings may need adapting. Agree the arrangements and what is included in your quote.

Preparation and disruption

The team needs access to the walls being treated. Discuss furniture, protection and how the work will be scheduled around your household.

Finish and decoration

Confirm the finished surface and whether decorating, reinstatement and any additional joinery are included or arranged separately.

Explore help with the cost

Funding may be available.
Let’s check your options.

Some households may qualify for support with insulation. What is available depends on the scheme, where you live and the needs of your property.

We’ll discuss current routes and explain what must be confirmed before any work goes ahead.

Ask about funding →

What helps us advise you?

Your property

Your postcode, tenure, existing insulation and energy performance.

Your circumstances

Household eligibility requirements vary between schemes.

Current availability

Local delivery, funding and the suitability of the proposed work must be confirmed.

A grant is not guaranteed. Any contribution will be explained before you decide.

Explore Warm Homes: Local Grant in England ↗
A couple relaxing in a comfortable living room

People you can put your trust in

Your home.
Our attention to detail.

We’ll help you understand the proposed work and what to expect from your insulation upgrade.

Advice based on your property

A suitability assessment before a recommendation.

The work explained clearly

Preparation, installation and any funding conditions discussed upfront.

A team you can contact

Help with your questions before and after installation.

Accredited, recognised and trusted

  • Octopus Trusted Partner of the Year 2026 winner
  • Tesla Powerwall Certified Installer
  • RECC Renewable Energy Consumer Code
  • PAS 2030
  • TrustMark Government Endorsed Quality
  • Gas Safe registered
  • MCS certified
  • SSIP accredited
  • CHAS accredited
  • North West Regional Construction Awards winner
  • BIBAs winner

From first question to a warmer home

Your insulation upgrade,
in four clear steps.

01

Tell us about your home

Share your property details and the rooms you want to improve.

02

Assess and design

We assess the walls and explain the system, room changes and finishing.

03

Agree the work

Confirm the scope, costs, funding and preparation before booking.

04

Install and hand over

Our team completes the agreed work and explains any ongoing considerations.

A few things you might be wondering

Your internal wall insulation
questions, answered.

Need advice about your own property?

Ask our team →
Is internal wall insulation suitable for my home?

It depends on the wall construction, condition and proposed work. Tell us about the property so we can arrange the right assessment before making a recommendation.

Does it insulate the walls between rooms?

The purpose is to reduce heat escaping through the external walls by insulating their inside surface. The design must also consider adjoining walls and other junctions.

Will it make my rooms smaller?

Yes, the new lining takes up some space. The amount depends on the specified system. We’ll explain the proposed dimensions before the work is agreed.

What happens to radiators, sockets and skirting?

These may need adapting as part of the work. Ask us to confirm the treatment of each fitting and the included costs in your proposal.

Will the rooms need redecorating?

The work changes the internal wall finish. Confirm the finishing standard, decorating and reinstatement arrangements in the agreed scope.

How long will installation take?

Timing depends on the rooms, system and preparation involved. We’ll explain the expected duration and discuss access before scheduling the work.

Can I get a grant for internal wall insulation?

Support depends on the current scheme, your circumstances, location and property. Our team can discuss options; eligibility, availability and any contribution must be confirmed before work proceeds.

How much will it cost and what could I save?

The quote depends on the wall area, specification, preparation and finishing. Energy savings vary by property and heating use, so we’ll discuss your home rather than promise a fixed saving.

Can I enquire as a tenant or landlord?

Yes. Tell us your circumstances and any work already planned. Appropriate permissions and any scheme requirements need confirming before installation.

Plan a more comfortable home.

Talk to our team about internal wall insulation.

Enquire now →

Your next home upgrade starts here.

Thinking about solar, battery storage or heating? Talk to our team about the right next step for your home.