Our Services
Internal Wall Insulation
Improve the thermal performance of solid-wall homes from the inside — no exterior works required.
Overview
What Is Internal Wall Insulation?
For homes where external wall insulation isn't suitable — such as listed buildings, conservation areas, or properties where external appearance must be preserved — internal wall insulation offers a highly effective alternative. Insulation boards or stud walls with insulation are installed against the inner face of external walls.
Internal wall insulation reduces thermal transmission through solid walls by over 70% and eliminates cold spots that can lead to condensation and damp. We use slim, high-performance systems that minimise room size reduction while maximising thermal gain.
Our experienced team manages the full process including making good, skirting reinstatement, and a quality decorating finish so your rooms are returned to use quickly and cleanly.
Key Benefits
- Reduce heat loss through walls by over 70%
- Suitable where EWI is not possible
- Eliminate cold spots and condensation
- Slim insulation options available
- Fully finished and made good
- Improvement in EPC rating
How It Works
Our Installation Process
Survey
We assess wall construction, room sizes, and moisture levels before specifying.
System Selection
We specify the slimmest, most effective insulation solution for your walls.
Installation
Boards or stud walls installed, with careful attention to detailing and vapour control.
Making Good
Skirtings, electrical sockets, and decoration reinstated to a clean, professional finish.
Common Questions
FAQs
How much room will I lose?
Modern slim-board systems typically take only 35–75mm from the room depth. We specify the minimum necessary to achieve the target performance.
Is there disruption to electrics and sockets?
All electrical outlets are extended and reinstated as part of the installation at no extra cost.
Will it cause damp problems?
No. Correctly installed IWI includes vapour control layers and breathable materials to prevent interstitial condensation.
Get Started Today
Ready to Improve Your Home?
Book a free, no-obligation survey with one of our certified specialists and find out exactly what your home could achieve.