Why Choose Spacetherm?

    Save Valuable Space

    Upgrade your insulation without bulky layers, so you keep more room space and avoid reducing usable floor area.

    Improve Thermal Comfort

    Help make cold rooms warmer and more comfortable, especially in hard-to-treat areas like window reveals and lofts.

    Suitable for Older Homes

    A smart choice for period and older homes where walls are difficult to insulate and every millimetre matters.

    Protect Original Features

    Improve insulation while keeping original details, finishes and character features in place.

    Flexible for Different Projects

    Can be cut to fit tricky spaces and unusual details, making it easier to insulate awkward areas.

    Reduce Moisture and Mould Risks

    Helps support a warmer internal surface, which can reduce the chance of condensation in vulnerable areas.

    Built for Long-Term Performance

    Designed to deliver 50 year continued thermal performance, providing reliable thermal performance.

    Access Support for Your Project

    Get expert advice, sample requests and U-value support to help you choose the right Spacetherm solution for your home.

    Ideal For

    The Thinnest Insulation in the UK

    Architect Niall Hedderman of Real Life Architecture explains the benefits of using Spacetherm® and compares it to traditional insulation like PIR and Mineral Wool, highlighting its technical and cost advantages.

    “Spacetherm® is made using aerogel. It is hydrophobic and vapour-open, so it can be fixed directly onto solid walls while allowing them to breathe, helping prevent dampness and mould behind the insulation. It is also likely one of the thinnest and most thermally efficient insulation options currently available in the UK, although at a higher cost.”

    FAQs

    Spacetherm Window Reveal Board

    Upgrade your home’s comfort and efficiency with Spacetherm WRB, the ultra-thin insulation board designed specifically for window reveals.

    Why choose Spacetherm WRB?

    • Maximise Space – Slim design keeps your window areas neat and unobtrusive
    • Stay Warm & Efficient – Exceptional insulation helps reduce heat loss and energy bills
    • Built to Last – Guaranteed long-term performance for 50+ years
    • Smart Moisture Control – Integrated vapour barrier helps prevent condensation
    • Easy Installation – Can be glued or fixed directly to walls and works with traditional dry-lining
    • Safe & Reliable – Made from non-hazardous materials

    Product Information

    Support From Design To Installation

    Our products are backed up by a dedicated team of technical experts, able to assist at every project stage from pre-planning to on site.

    We offer CAD detail reviews, installation guidance, condensation risk analysis, WUFi calculations, U-Value calculations, ground gas system designs, telephone support & more. Our products also have a range of BIM Objects & Performance Specifications.

    Why Customers Choose Spacetherm

    Spacetherm® Multi - Bath - Image - 2

    Mike Mower - Grade II listed Georgian townhouse in Bath

    “The house has single-skin Bath stone walls and original lime finishes that need to breathe, so standard insulation was not suitable. Other options would have taken up too much room and meant altering door frames and window reveals. Spacetherm® Multi gave us a slim, breathable solution that improved thermal performance while helping protect the character of our historic family home.”

    Spacetherm® WL - London SE22 - Image - 1

    Sean Crawford - Victorian home in London

    “Our living room has solid external walls and original features, including cornicing, fireplaces, radiators, and window surrounds, which standard insulation could have disrupted. Spacetherm® WL is super thin yet insulating, and easy enough to install by myself. It meant we could improve warmth without losing valuable space or damaging the features that make the house special.”

    Spacetherm WL - Paris - Image - 1

    Kiernan Murphy - Older Stone Apartment in Paris

    “The solid walls caused heat loss in winter and held too much heat in summer, but most insulation options were too thick for the property. At just 13mm, Spacetherm® WL fitted neatly within the cornices and worked well with the uneven walls. We were very pleased with the results, and the A. Proctor Group were extremely helpful with questions from us, our architect, and our builder.”

    Spacetherm WL - SE London - Image - 1

    Gustaaf Houtman - Victorian Terraced House in London

    “Before the improvements, some rooms took a long time to heat and maintaining comfort was a real challenge and significantly increased our energy bills  After installing Spacetherm® WL as part of the upgrade, the rooms warmed up much faster and stayed comfortable even in cold weather. Its slim 13mm profile was especially valuable in a London home where space is limited.”

    Gregor MacKinnon - Traditional Farmhouse in Inverness

    Gregor MacKinnon - Traditional Farmhouse in Inverness

    “The existing concrete floors made the place cold, but breaking up the original slabs is costly and disruptive. Spacetherm® Multi improved thermal comfort without really raising floor height or removing existing features. Its slim, vapour-open design allowed the floor to breathe, helping reduce mould concerns. The A. Proctor Group team were also very engaged and supportive.”

    Ian Hurst - Solid Brick Traditional Home

    Ian Hurst - Solid Brick Traditional Home

    “The bathroom was freezing, but traditional insulation reduced floor space and bathroom furniture choices. Its thinness, vapour-open performance, and simple installation made it a practical solution for an older home. The company’s technical and sales teams were responsive and helpful throughout. Every time I submitted a different U-value calculation, I got a prompt reply.”

    Articles

    How to Insulate Solid Walls so They Are Breathable and Keep Original Features cover image

    How to Insulate Solid Walls so They Are Breathable and Keep Original Features

    Why Insulate Window Reveals when Replacing Existing Windows? cover image

    Why Insulate Window Reveals when Replacing Existing Windows?

    Step by Step: How to Retrofit Wall Insulation cover image

    Step by Step: How to Retrofit Wall Insulation

    How Could Your Retrofit Project Benefit from Aerogel Insulation? cover image

    How Could Your Retrofit Project Benefit from Aerogel Insulation?

    Space Saving Insulation for 1970s Building cover image

    Space Saving Insulation for 1970s Building

    What Solutions Are There for Protecting Listed Buildings ? cover image

    What Solutions Are There for Protecting Listed Buildings ?

    Get In Touch With Us

    Our team is here to assist and make things easy for you, whether you need technical support, sales support, or help with where to buy Spacetherm. You can also get in touch via the webchat below or send us an email, and we’ll help you take the next step with confidence.