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Your Trusted Partner for External Wall Insulation Solutions
We are Therm-Eco E W I, a family-run business based in Exeter, Devon, with over 13 years of experience delivering high-quality insulation solutions across the UK. Specialising in external wall insulation for park homes and masonry properties, we combine industry expertise with a commitment to customer care, ensuring every project meets the highest standards of energy efficiency and aesthetic enhancement. Our team works closely with local authorities and private homeowners, offering tailored systems that reduce heating bills by up to 50%, improve thermal performance, and extend the lifespan of properties.

With a reputation built on reliability, technical knowledge, and award-winning service, we provide comprehensive solutions including renders, glazing, loft insulation, and under-floor insulation, all backed by long-term guarantees. Our dedication to innovation and sustainability ensures clients receive durable, low-maintenance results that enhance both comfort and property value.
Services
External Wall Insulation Loft Insulation Under Floor Insulation Glazing Renders Plastics Installation Refurbishment Packages Grant Applications
Highlights and features
  • We have over 13 years of experience in external wall insulation for park homes and masonry properties.
  • Our qualified team offers a 21-year guarantee on plastics and a 10-year guarantee on glazing.
  • We work closely with local authorities to deliver large-scale insulation projects.
  • Our bespoke systems reduce heating bills by up to 50% while improving property aesthetics.
  • We provide comprehensive refurbishment packages to extend the lifespan of older homes.
What people say
Excellent service High standard of workmanship Considerable difference in warmth Transformed property Professional manner
Services
External Wall Insulation
Our external wall insulation systems enhance thermal efficiency, reduce heating bills by up to 50%, and protect properties from damp and condensation. Suitable for masonry and park homes, these bespoke solutions improve energy conservation while offering a tailored aesthetic finish. Clients benefit from long-term savings and increased property value.
Loft Insulation
Loft insulation minimises heat loss through the roof, lowering energy costs and improving home comfort. Installed with precision, our materials ensure optimal thermal performance and compliance with building regulations, providing a cost-effective solution for year-round temperature control.
Under Floor Insulation
Under-floor insulation enhances energy efficiency in park homes by creating a thermal barrier that reduces heat loss. Our method eliminates cold bridging and protects pipework, ensuring durability and ease of future maintenance while contributing to lower heating expenses.
Glazing
Our energy-efficient glazing solutions feature 28mm sealed units with Pilkington K-Glass, offering triple-glazing performance. Reinforced PVCu profiles and multipoint locking systems ensure security, durability, and a 10-year guarantee on materials and installation.
Renders
We supply and apply durable, permeable renders suitable for various substrates, including brick and insulation boards. Available in multiple colours and textures, our finishes enhance weather resistance, reduce maintenance, and provide a modern aesthetic to residential properties.
Questions
What services does Therm-eco EWI offer?
We specialise in external wall insulation, loft insulation, under-floor insulation, glazing, renders, plastics installation, and comprehensive refurbishment packages for residential properties.
Do you provide services outside the South West of England?
While we primarily operate in the South West, including Cornwall, Devon, and Somerset, we also undertake projects beyond these areas upon request.
Are grants available for insulation installations?
Yes, we assist clients in accessing government and local authority grants to reduce the cost of energy-efficient insulation upgrades.
What guarantees do you offer?
Our plastics installations come with a 21-year guarantee, and glazing services include a 10-year guarantee covering materials and workmanship.