Best fit for
Semi-detached Cotswold stone home
Project snapshot
- Location
- 2 Evenlode Road, GL56 0TS
- Property Type
- Semi-detached, Cotswold stone construction
- Planning Status
- Not an AONB or conservation area — Permitted Development granted by Cotswold District Council
- EWI System
- Permarock — 60mm EPS insulation boards
- Finish (front)
- Bespoke brick-slip finish with replicated stone quoins
- Finish (sides & rear)
- 3mm grain roughcast render to match the existing character
- Specialist Features
- Reproduction stone window surrounds, cills and headers supplied by Buildlite
- Standard EWI Cost
- £10,500
- Specialist Pilot Cost
- £16,975
Who this project helps
This project is most useful for homeowners in Moreton-in-Marsh or similar Midlands areas who are comparing external wall insulation for semi-detached cotswold stone home and want real proof of how the recommendation translates into a finished result.
Local relevance
Moreton-in-Marsh
Main service theme
external wall insulation
Cotswold Stone Transformation
The challenge
The homeowner wanted the thermal benefits of external wall insulation without flattening the Cotswold look that gives the property its character.
Cotswold stone properties create a genuine trade-off for many homeowners. The original stonework looks beautiful, but the walls offer limited thermal performance, making homes colder, more expensive to heat, and more vulnerable to damp.
At 2 Evenlode Road, the brief was not simply to warm the property up. It was to preserve the visual identity of the front elevation, match the neighbouring character, and keep the finished result acceptable under Permitted Development.
Retain the traditional stone appearance on the front elevation.
Replicate decorative features such as quoins, window cills, and headers.
Deliver a durable weather-resistant finish that still suits neighbouring properties.
Achieve a compliant outcome without planning objections.
Cotswold Stone Transformation
The solution
Rockwarm delivered a bespoke Permarock system designed to preserve the home’s visual character while upgrading its thermal envelope.
60mm EPS insulation system
A full Permarock EPS board system was installed across all elevations to create a continuous insulated envelope with no cold bridges.
Bespoke brick-slip finish on the front elevation
Hand-laid and hand-cut brick slips in a Cotswold stone colour were used to recreate an irregular natural finish instead of a flat rendered look.
Replicated stone detailing
Specialist reproduction window surrounds, cills, and headers were supplied by Buildlite so the façade could keep the right level of character and depth.
Traditional roughcast to the sides and rear
A coarser 3mm grain roughcast render was used away from the street-facing elevation to match the existing traditional texture of the property.
Cotswold Stone Transformation
Installation process
The project followed the standard EWI sequence, with additional specialist stages to deliver the heritage-style finish.
Stage 1
Boarding
60mm EPS insulation boards were mechanically fixed to the existing stonework and sealed to reduce air leakage.
Stage 2
Scrim and mesh
A reinforcement mesh was bedded into a base coat of adhesive to create a durable crack-resistant substrate.
Stage 3
Primer
A specialist primer prepared the whole surface for the decorative finishes that followed.
Stage 4
Quoins and window surrounds
Reproduction stone detailing was positioned and integrated carefully into the system for a seamless heritage-style finish.
Stage 5
Brick-slip installation
Each slip was hand-laid and pointed individually to achieve the irregular traditional appearance needed for the front elevation.
Cotswold Stone Transformation
The results
The finished property keeps its authentic Cotswold character while gaining the benefits of a modern insulated and weatherproofed external envelope.
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BeforeAfter
Drag the slider to compare the transformation.
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Original detailReplicated finish
Drag the slider to compare the transformation.
A continuous insulation envelope across all elevations reduced cold bridges and heat loss.
Permitted Development approval was achieved without planning complications.
The original aesthetic was preserved on the street-facing elevation.
The new finish gives the property long-term weather protection and a replicable model for similar Cotswold homes.
Case study gallery
Cotswold Stone Transformation
Summary
This project shows that homeowners in character-sensitive settings do not have to choose between warmth and appearance. By combining standard EWI methods with bespoke brick-slip work and reproduced stone detailing, Rockwarm delivered a warmer, more resilient home without sacrificing the defining look of the property.
Keep exploring the right next step
Use these routes to move from a single project story into the most useful next comparison. The first group keeps you close to the right service, local coverage, and wider proof. The second group helps you keep researching before you decide whether to book a survey.
Service, place, and proof
Explore external wall insulation
Compare the core service page if you want to see where this solution fits, how it works, and what to expect next.
Check coverage in Moreton In Marsh
Use the matching local landing page to judge whether Rockwarm regularly works on homes like yours nearby.
Read customer reviews
Add a broader layer of homeowner proof beyond this single project story.
Browse more case studies
Compare other property types, finishes, and project decisions before you book a survey.
Useful reading before you decide
Read the solid wall insulation guide
Understand why solid-wall homes behave differently and when external insulation is usually the best fit.
See what happens during EWI installation
Use the installation guide if you want to know what the process looks like before booking a survey.
Check the common EWI myths
Clear up the usual doubts around breathability, disruption, planning, and appearance.
Get started
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