Internal Wall Insulation — Commercial Improvements Ltd
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Internal Wall Insulation
for Solid Wall Homes

Improve comfort, reduce heat loss and upgrade the energy performance of suitable solid wall properties with carefully designed internal wall insulation.

35%
Potential heat loss through uninsulated walls
Room
By room installation approach available
Free
Property suitability survey available
Better
Comfort in colder external rooms
Internal wall insulation installation
Insulation installation work
Solid
Wall improvement solution

A Practical Solution for Homes Without Cavity Walls

Internal wall insulation is often used where a property has solid external walls, no suitable cavity, or where external wall insulation is not appropriate.

Commercial Improvements Ltd installs internal wall insulation to improve thermal comfort and reduce heat loss through external walls. The system is fitted to the inside face of external walls, helping rooms retain heat more effectively during colder months.

Because internal wall insulation changes the way a wall performs, every project needs careful assessment. We check wall condition, damp risk, ventilation, room layout, thermal bridging and services before recommending the correct approach.

Suitable for many solid wall and hard-to-treat properties
Moisture, ventilation and wall condition assessed before work starts
Careful detailing around windows, reveals, corners and junctions
Helps improve comfort without changing the outside appearance
Grant and funded scheme options checked where available
35%
Potential heat loss through uninsulated walls
Solid
Wall homes can be upgraded internally
Free
No-obligation suitability survey
Room
By room installation approach available

Why Install Internal Wall Insulation?

Internal wall insulation can significantly improve comfort in suitable solid wall homes, especially where external insulation is not possible or not preferred.

Reduced Wall Heat Loss
Internal insulation helps reduce heat escaping through external walls, making rooms easier to heat and more comfortable.
Warmer Living Spaces
Cold internal surfaces can make rooms feel uncomfortable. IWI helps improve the internal surface temperature of external walls.
Improved Energy Performance
Upgrading solid walls can support a better energy rating and reduce the overall heat demand of the property.
Keeps External Appearance
Internal insulation can be useful where the outside appearance of the property needs to remain unchanged.
Flexible Installation
The work can often be planned room by room, which can help reduce disruption in occupied homes.
Grant Support Available
Where funding is available, we can check whether your home may qualify for internal wall insulation under a suitable scheme.

How Our Internal Wall Insulation Service Works

Step 1
Initial Property Review
We collect property information, check the wall type and discuss the rooms or areas where insulation may be required.
Step 2
Detailed Suitability Survey
Our surveyor checks wall condition, moisture risk, ventilation, services, room layout, window reveals and key junctions.
Step 3
Specification and Quote
We recommend the most appropriate insulation approach and provide a clear quote or funding route where available.
Step 4
Careful Installation
The insulation system is installed internally with attention to corners, reveals, sockets, pipework and junction details.
Step 5
Finishing and Handover
We complete quality checks, make sure the area is left tidy and explain aftercare, ventilation and drying-out considerations.
Internal wall insulation survey process
Designed Before It Is Installed
Internal wall insulation needs proper survey, detailing and moisture consideration

Is Internal Wall Insulation Right for Your Property?

Internal wall insulation is very effective in the right property, but it must be carefully specified. We check the building condition first to make sure the measure is suitable and safe.

Solid Wall or Hard-to-Treat Construction
IWI is usually considered where there is no suitable cavity wall or where external insulation is not practical.
Moisture Risk Checked
Any damp, water penetration, defective render, leaks or poor ventilation should be resolved before installation.
Thermal Bridges Considered
Corners, party walls, ceilings, floors, reveals and junctions need careful detailing to reduce cold spots and condensation risk.
Ventilation Reviewed
As the home becomes more insulated, suitable ventilation is important to help control moisture and maintain indoor air quality.
Internal wall insulation suitability survey
Free
Survey
Ready to Upgrade Your Walls?

Book Your Free Internal
Wall Insulation Survey

Our team will assess your wall type, moisture risk, room layout and ventilation needs, then explain whether internal wall insulation is suitable for your property.

Engineer speaking with homeowner
Call Us Now
01582 433789
Mon-Fri 8am-6pm