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Cavity Wall

Cavity Wall Thermal Insulation

Cavity Wall Insulation

Building Materials Nationwide offers a wide range of cavity wall insulation for sale. Fitting insulation within the gaps of cavity walls is a cost-effective way to retain heat within buildings and to reduce their energy usage. 

 

We sell a range of batts, boards, rolls, and slabs, from leading brands like Rockwool, Kingspan, and Knauf, perfect for whatever cavity wall insulation needs you may have. Whether you are looking to insulate a new build or renovate an existing property, and whether you are working with a residential property or a commercial one, our range of cavity wall insulation will offer the perfect option for your project.

 

Our range of cavity wall insulation boards includes the Kingspan Kooltherm K108 cavity boards. These boards are built to limit thermal bridging and air leakage within cavity walls, offering unrivalled thermal performance. They come in a range of thicknesses, suited to the needs of your project. We also sell the Celotex CF5000 Premium Full Fill Cavity Boards, suited for cavity wall insulation. 

 

CF5000 boards minimise heat loss with their mechanically engineered rebated edge, offering enhanced thermal performance while remaining easy to cut and install. They make an excellent premium choice of cavity wall insulation. Our Ecotherm Eco-Cavity Partial Fill Cavity Insulation boards offer high levels of thermal insulation for thinner constructions, giving strong protection against driving rain, perfect for buildings in exposed locations. They are easy to install in new builds, avoiding rot, sagging, and decay over time.

 

Our selection of Knauf Earthwool Rolls can be used as cavity wall insulation. These offer both thermal and acoustic insulation and give excellent flexibility while being sustainably manufactured. Our Knauf Earthwool Steeltherm Rolls boast an A1 fire reaction and come in thicknesses of either 100mm or 150mm.


If you are looking for slabs for your cavity wall insulation, Building Materials Nationwide sells both the Knauf Earthwool Masonry Party Wall Slab and the Knauf Earthwool Dritherm Cavity Slab. These are high quality, non-combustible insulation designed to offer both thermal and acoustic protection. We also sell the Isover CWS36 Cavity Wall System, designed for installation during the construction process. These slabs are strong and resilient, offering high-quality insulation, while also being non-combustible.

 

A great choice for new builds and extensions are our range of cavity batts, like the Rockwool Full FIll Cavity Batts. These provide long term cavity wall insulation, ensuring fire resistance within cavities. They are full fill, adapting to imperfections within a cavity wall, minimising draughts and heat loss.

 

At Building Materials Nationwide we pride ourselves on our comprehensive range of products, including our selection of cavity wall insulation. But we understand that sometimes a specific job requires a specific product. Our trade account holders have access to a dedicated account manager, who will attempt to source any products that may not be listed on our website for you, should you require them.

 

Building Materials Nationwide is the one-stop shop for building supplies in the UK, removing the hassle from the supply side of the building. We stock a wide range of cavity wall insulation, including batts, boards, slabs, and rolls. Through our website, you’ll find a wide range of insulation, dry lining, partitioning, and other building materials. 

 

Signing up for a trade account through our website will get you access to a dedicated account manager, who you’ll be able to talk to via phone and email. Your dedicated account manager will be there to help with any problems you might have, and will also be able to organise any large or specific orders. We aim to offer same and next day delivery all across the UK, and our team is willing to go above and beyond to source specialist products for our trade clients. We aim to remove the hassle of sourcing building materials, offering a great range of products, delivered across the UK, at reasonable prices. 

 

Set up a trade account with us today through our website to gain access to your dedicated account manager, our brilliant product range, and our express delivery services. You’ll also be able to apply for 30 days of interest-free credit. If you’d like to speak to a skilled member of our team about cavity wall insulation or the rest of our product range,  you can also give us a call on 01628 674910.

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  1. £42.46 £50.95
  2. 2 - 3 Working Day Delivery

    • Sold in full artic loads of 550 packs
    • Euroclass Fire Classification A2
    £41.86 £50.23
  3. Call 01628 674910 To Discuss Availability

    • Premium performance
    • Resists moisture penetration
  4. Call 01628 674910 To Discuss Availability

    • Premium performance
    • Resists moisture penetration
  5. Call 01628 674910 To Discuss Availability

    • Premium performance
    • Resists moisture penetration
  6. Call 01628 674910 To Discuss Availability

    • Premium performance
    • Resists moisture penetration
  7. Call 01628 674910 To Discuss Availability

    • Premium performance
    • Resists moisture penetration
  8. Call 01628 674910 To Discuss Availability

    • Premium performance
    • Resists moisture penetration
  9. Call 01628 674910 To Discuss Availability

    • Premium performance
    • Resists moisture penetration
  10. Call 01628 674910 To Discuss Availability

    • Premium performance
    • Resists moisture penetration
  11. Call 01628 674910 To Discuss Availability

    • Premium performance
    • Resists moisture penetration
  12. £25.08 £30.10
  13. £23.70 £28.44
  14. £19.92 £23.90
  15. £22.44 £26.93
  16. £38.74 £46.49
  17. £24.69 £29.63
  18. £39.80 £47.76
  19. £40.79 £48.95
  20. £42.47 £50.96
  21. £40.11 £48.13
  22. £40.41 £48.49
  23. £32.40 £38.88

Items 1-24 of 174

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Cavity Wall Insulation

Building Materials Nationwide offers a wide range of cavity wall insulation for sale. Fitting insulation within the gaps of cavity walls is a cost-effective way to retain heat within buildings and to reduce their energy usage. 

 

We sell a range of batts, boards, rolls, and slabs, from leading brands like Rockwool, Kingspan, and Knauf, perfect for whatever cavity wall insulation needs you may have. Whether you are looking to insulate a new build or renovate an existing property, and whether you are working with a residential property or a commercial one, our range of cavity wall insulation will offer the perfect option for your project.

 

Our range of cavity wall insulation boards includes the Kingspan Kooltherm K108 cavity boards. These boards are built to limit thermal bridging and air leakage within cavity walls, offering unrivalled thermal performance. They come in a range of thicknesses, suited to the needs of your project. We also sell the Celotex CF5000 Premium Full Fill Cavity Boards, suited for cavity wall insulation. 

 

CF5000 boards minimise heat loss with their mechanically engineered rebated edge, offering enhanced thermal performance while remaining easy to cut and install. They make an excellent premium choice of cavity wall insulation. Our Ecotherm Eco-Cavity Partial Fill Cavity Insulation boards offer high levels of thermal insulation for thinner constructions, giving strong protection against driving rain, perfect for buildings in exposed locations. They are easy to install in new builds, avoiding rot, sagging, and decay over time.

 

Our selection of Knauf Earthwool Rolls can be used as cavity wall insulation. These offer both thermal and acoustic insulation and give excellent flexibility while being sustainably manufactured. Our Knauf Earthwool Steeltherm Rolls boast an A1 fire reaction and come in thicknesses of either 100mm or 150mm.


If you are looking for slabs for your cavity wall insulation, Building Materials Nationwide sells both the Knauf Earthwool Masonry Party Wall Slab and the Knauf Earthwool Dritherm Cavity Slab. These are high quality, non-combustible insulation designed to offer both thermal and acoustic protection. We also sell the Isover CWS36 Cavity Wall System, designed for installation during the construction process. These slabs are strong and resilient, offering high-quality insulation, while also being non-combustible.

 

A great choice for new builds and extensions are our range of cavity batts, like the Rockwool Full FIll Cavity Batts. These provide long term cavity wall insulation, ensuring fire resistance within cavities. They are full fill, adapting to imperfections within a cavity wall, minimising draughts and heat loss.

 

At Building Materials Nationwide we pride ourselves on our comprehensive range of products, including our selection of cavity wall insulation. But we understand that sometimes a specific job requires a specific product. Our trade account holders have access to a dedicated account manager, who will attempt to source any products that may not be listed on our website for you, should you require them.

 

Building Materials Nationwide is the one-stop shop for building supplies in the UK, removing the hassle from the supply side of the building. We stock a wide range of cavity wall insulation, including batts, boards, slabs, and rolls. Through our website, you’ll find a wide range of insulation, dry lining, partitioning, and other building materials. 

 

Signing up for a trade account through our website will get you access to a dedicated account manager, who you’ll be able to talk to via phone and email. Your dedicated account manager will be there to help with any problems you might have, and will also be able to organise any large or specific orders. We aim to offer same and next day delivery all across the UK, and our team is willing to go above and beyond to source specialist products for our trade clients. We aim to remove the hassle of sourcing building materials, offering a great range of products, delivered across the UK, at reasonable prices. 

 

Set up a trade account with us today through our website to gain access to your dedicated account manager, our brilliant product range, and our express delivery services. You’ll also be able to apply for 30 days of interest-free credit. If you’d like to speak to a skilled member of our team about cavity wall insulation or the rest of our product range,  you can also give us a call on 01628 674910.