Wall insulation
Internal and External Wall Insulation
Warmer homes, lower heat loss and breathable solutions for traditional properties.
Book a property survey
Transform the Comfort of Your Home
Cold walls and heat loss can make an older property uncomfortable and costly to heat. Our internal and external wall insulation solutions help retain heat, improve comfort, and reduce energy demand. We specialise in sustainable, breathable systems using wood-fibre insulation with lime plaster or render: materials chosen to work sympathetically with many traditional solid-wall homes.
Not sure which system is right for your property? Book a property survey and receive a tailored recommendation.
Inside
Internal Wall Insulation: Comfort Without Changing the Exterior
Ideal when you want a warmer, more efficient home while preserving the outside appearance. We fit wood-fibre insulation to the inner face of suitable external walls and finish it with breathable lime plaster, creating warmer wall surfaces and a more comfortable indoor environment.
Why Homeowners Choose Internal Wall Insulation
- Preserves the exterior: useful where the façade should remain unchanged, including many traditional or visually sensitive properties.
- Flexible installation: work can often be completed one room or one elevation at a time.
- Improved comfort: warmer internal wall surfaces can reduce draught-like cold radiation and improve room comfort.
- Energy efficiency: less heat escapes through the walls, which can reduce heating demand and running costs.
- Breathable specification: wood fibre and lime plaster can help manage moisture in compatible solid-wall construction.
What We Plan Carefully
- The insulation slightly reduces the usable floor area of each treated room.
- Skirting boards, radiators, sockets and other fittings may need to be moved.
- Installation causes internal disruption and rooms normally require redecoration.
- Junctions around floors, ceilings, windows and internal walls need careful detailing to limit cold bridges and condensation risk.
Outside
External Wall Insulation: Wrap Your Home in Comfort
Create a continuous insulating layer around your property without reducing indoor space. Our external systems can improve thermal performance, refresh a tired façade and add weather protection, with a reinforced render or suitable finish selected for the building.
Why Homeowners Choose External Insulation
- Continuous thermal layer: wrapping the building externally can reduce cold bridges at floors and internal wall junctions.
- No loss of indoor space: room dimensions and internal finishes are largely retained.
- Less internal disruption: most of the work takes place outside the occupied rooms.
- Weather protection: the new finish can protect and renew a tired external façade.
- Improved comfort and efficiency: the existing wall remains warmer, helping the building retain heat more evenly.
What We Plan Carefully
- External insulation changes the appearance and increases the thickness of the façade.
- Planning permission or other consent may be required, particularly for listed buildings and properties in conservation areas.
- Roof edges, window sills, pipes, vents and external fittings may need alteration.
- Scaffolding, weather conditions and access can affect the programme and cost.
- The base of the wall, openings and roof junctions must be carefully detailed to prevent water ingress.
The Right Solution Starts with the Right Survey
| Consideration | Internal retrofit | External insulation |
|---|---|---|
| Appearance | Keeps the exterior unchanged | Changes or renews the façade |
| Indoor space | Small reduction | No reduction |
| Disruption | Work inside rooms | Most work outside |
| Installation | Can often be phased room by room | Usually treated as a whole elevation or building |
| Thermal continuity | More junction detailing is required | Generally creates a more continuous layer |
Every home is different. We assess the building fabric, its condition, moisture exposure, appearance, planning constraints, available space and budget before recommending a solution. This considered approach helps ensure that the insulation is appropriate, carefully detailed and designed to perform over the long term.
Guide Pricing
These guide prices provide a clear starting point for budgeting. Final quotations are confirmed following a property survey.
Internal wall insulation
£50 to £150 per m²
Wood-fibre insulation with a breathable lime-plaster finish
External wall insulation
£150 to £250 per m²
Wood-fibre insulation with reinforced lime render or another suitable external finish
Guide prices include VAT. The final price depends on the insulation thickness, the chosen lime system and the complexity of the preparation work. Prices are indicative and subject to a property survey, wall condition, access, detailing, finish, scaffolding and any required permissions. A written quotation will confirm the full scope and total cost.
Why Choose Our Breathable Retrofit Approach?
We combine sustainable wood-fibre insulation with lime plaster or lime render to create compatible, vapour-open systems for many traditional buildings. From the initial survey to careful detailing around windows, floors and roof junctions, we focus on comfort, quality and respect for your property.
Take the First Step Towards a Warmer Home
Arrange a property survey today. We will discuss your goals, assess your walls and recommend the internal or external insulation solution best suited to your home.
Arrange a property surveyAll recommendations are subject to a property survey, the condition of the building and any required planning permission or listed-building consent.