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

Improve warmth, protect external walls and transform the look of your property with professionally installed external wall insulation.

Book a Free Survey → View Our Services
35%
Potential heat loss through uninsulated walls
Whole
External wall upgrade for suitable homes
Free
Property suitability survey available
Better
Comfort and kerb appeal
External wall insulation installation
Insulation installation work
EWI
External wall upgrade
External Wall Insulation

A Complete Thermal Upgrade for Solid Wall Properties

External wall insulation is a fabric-first improvement that wraps the outside of the property with insulation and a protective finish.

Commercial Improvements Ltd installs external wall insulation for suitable homes, landlords and retrofit projects. The system is fixed to the outside of the external walls, then finished with reinforced basecoat and render to improve both thermal performance and external appearance.

Because the system changes the outside face of the building, careful survey and detailing are essential. We assess wall condition, roofline, cills, vents, pipes, ground levels, moisture risk and planning considerations before recommending the correct approach.

Suitable for many solid wall and hard-to-treat properties
Wall condition, moisture risk and external defects checked first
Careful detailing around windows, doors, plinths, eaves and services
Protective render finish improves the external appearance
Grant and funded scheme options checked where available
35%
Potential heat loss through uninsulated walls
Solid
Wall homes can be upgraded externally
Free
No-obligation property survey
New
External finish and improved kerb appeal
Key Benefits

Why Install External Wall Insulation?

External wall insulation can make a major difference to comfort, heat retention and the overall appearance of suitable properties.

Reduced Wall Heat Loss
External insulation helps reduce heat escaping through external walls, making the property easier to keep warm.
Improved Home Comfort
By insulating the outside walls, rooms can feel warmer and more stable during colder weather.
Better Energy Performance
Upgrading external walls can support improved energy efficiency and reduce the overall heat demand of the building.
Fresh External Appearance
The render finish can modernise tired external walls and improve the overall look of the property.
Weather Protection
A well-installed system can help protect the external wall from weather exposure when existing defects are resolved first.
Grant Support Available
Where funding is available, we can check whether your property may qualify for external wall insulation under a suitable scheme.
Our Process

How Our External Wall Insulation Service Works

Step 1
Initial Property Review
We collect property details, check the likely wall type and discuss the external areas where insulation may be required.
Step 2
Detailed External Survey
Our surveyor checks wall condition, moisture risk, roofline, cills, vents, pipes, ground levels and other key details.
Step 3
Design and Specification
We prepare the correct system approach, including insulation type, render finish, junction detailing and any enabling works required.
Step 4
Professional Installation
Insulation boards are fixed externally, reinforced with mesh and basecoat, then finished with the agreed render system.
Step 5
Finishing and Handover
We complete quality checks, review the finish and provide handover information for care, maintenance and aftercare.
External wall insulation survey process
Surveyed, Designed and Installed Properly
External wall insulation needs careful detailing at every junction
Property Suitability

Is External Wall Insulation Right for Your Property?

External wall insulation can be very effective, but it must be suitable for the building. We check the condition of the walls and all key external details before recommending the measure.

Solid Wall or Hard-to-Treat Construction
EWI is often considered for properties with solid walls or where cavity wall insulation is not suitable.
Moisture and Defects Checked
Leaking gutters, defective render, cracks, damp issues or poor wall condition should be resolved before the system is installed.
Junctions and Details Reviewed
Roof edges, window cills, reveals, plinths, vents, meter boxes, pipework and boundary details need careful planning.
Planning Considered
Some properties may need planning consideration, especially in conservation areas, flats, listed buildings or where appearance changes significantly.
External wall insulation suitability survey
Free
Survey
Ready to Upgrade Your Home?

Book Your Free External
Wall Insulation Survey

Our team will assess your wall type, external condition, moisture risk and detailing requirements, then explain whether external wall insulation is suitable for your property.

Book a Free Survey → View Our Services
Engineer speaking with homeowner
Call Us Now
01582 433789
Mon-Fri 8am-6pm

Commecial Improvements Ltd
250 The Village Butterfield Business Park
Great Marlings
Luton
England
LU2 8DL

insulation@improvemental.co.uk

01582 640442

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