PAS 2030 installed systems
Fully guaranteed insulation work
Free home energy assessments
Improve Comfort and Energy Efficiency from the Inside
​Internal wall insulation (IWI) is an effective solution for improving the thermal performance of homes where external wall insulation is not suitable, such as listed buildings, properties with planning restrictions, stone facades or where the external appearance needs to be preserved. Warmhouse Ltd specialises in professionally installed PAS 2035-compliant internal wall insulation systems, helping homeowners create warmer, healthier and more energy-efficient homes while reducing heat loss and energy costs.
Benefits of Internal Wall Insulation
Installing Internal Wall Insulation can help to:
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Reduce heat loss through external walls by up to 35%.
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Lower household energy bills.
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Improve your home's Energy Performance Certificate (EPC) rating.
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Create warmer internal wall surfaces.
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Reduce condensation, cold spots and mould associated with poorly insulated walls.
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Improve thermal comfort throughout the year.
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Improve sound insulation between external walls and living spaces.
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Reduce your carbon footprint.
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Increase property value.
Internal Wall Insulation delivers excellent results on its own but works even more effectively when combined with external wall insulation, cavity wall insulation, loft insulation, room-in-roof insulation, flat roof insulation, underfloor insulation and air source heat pumps as part of a complete whole-house energy efficiency solution.
Suitable for Many Property Types
Internal wall insulation is an excellent solution for:
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Solid brick properties
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Solid stone properties
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Listed buildings (where appropriate)
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Conservation areas
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Properties where the external appearance must remain unchanged
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Individual rooms requiring thermal improvement
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Homes affected by cold walls and condensation
Every property is individually surveyed to determine the most appropriate insulation system and installation method.
We had floor, loft and internal wall insulation installed in June, with grant funding from Home Energy Scotland. Very happy with the service from start to finish, communication was good, we needed tweaks to paperwork as per funding application and they got back really promptly. We added an extra wall for insulation after the survey and initial quote, and again this was no problem to get added on. Paul and Darren did an excellent job, real attention to detail and always asking us how we’d prefer things to look etc, couldn’t fault them at all and the finish is fantastic. Plus we’re really feeling the benefit of the insulation now it’s getting colder. Have already recommended this company to friends.
Emily G, Google
How Internal Wall Insulation Works
High-performance insulated plasterboard or thermal lining systems are installed to the inside face of external walls, creating a continuous thermal barrier that significantly reduces heat loss.
Depending on the property's construction, we may install the following:
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High-performance insulated plasterboard systems
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Rigid insulation board systems
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Mineral wool insulation systems
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Vapour control layers where required
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Independent metal or timber framing systems where appropriate
The completed system is professionally plaster-finished, ready for decoration, providing a clean, modern appearance while greatly improving your home's thermal performance.
Why trust Warmhouse Ltd?
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PAS 2035-compliant retrofit specialists
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Whole-house energy efficiency specialists
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Experienced Internal Wall Insulation installers
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Approved insulation systems and manufacturer-certified installation methods
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Fully insured and accredited
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25-year manufacturers' guarantees on eligible insulation systems
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Complete project management from survey to completion
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Trusted by homeowners, housing associations, local authorities and commercial clients.
Our experienced team carefully surveys every property to ensure the correct insulation system is selected, minimising thermal bridging and delivering long-lasting energy performance.
Funding and support
Funding for Internal Wall Insulation may be available depending on where you live, your property type and your eligibility. For homeowners in Scotland, funding may be available through Home Energy Scotland, a Scottish Government-backed service delivered by Energy Saving Trust. If you live elsewhere in the UK, our team can advise you on any regional or local authority funding and support that may be available.
Internal wall insulation for warmer, more comfortable living spaces
Call today to arrange your free assessment.