Due to increased delivery costs, we need to implement a minimum order value across our product ranges. The minimum order value is £200 (ex VAT) / £240 (inc VAT). This will enable us to continue to keep our prices low and our service levels high. We thank you for your business and continued support during these unprecedented times.

Please note - due to manufacturer shortages we are temporarily not able to accept new orders for plasterboard.


Cavity Wall Insulation

The external walls of most houses built after 1920 are made of two layers with a gap or cavity between them. Cavity Wall Insulation fills that gap, keeping the warmth in, and saving energy. Cavity wall insulation is one of the most efficient ways to insulate your home, so take a look at our product range, and order now for quick, reliable delivery.

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  1. Alticloser FR Plus Cavity Closers (fire rated)
    Alticloser FR Plus Cavity Closers (fire rated)
    As low as
    From  £199.68  inc VAT
    From  £166.40  ex VAT
  2. Earthwool Dritherm Cavity Slab 32 Ultimate
    Earthwool Dritherm Cavity Slab 32 Ultimate
    As low as
    From  £32.18  inc VAT
    From  £26.82  ex VAT
  3. Celotex CW4000 Cavity Wall Insulation Board
    Celotex CW4000 Cavity Wall Insulation Board
    As low as
    From  £50.90  inc VAT
    From  £42.42  ex VAT
  4. Recticel Eurowall Cavity Wall Insulation
    Recticel Eurowall Cavity Wall Insulation
    As low as
    From  £50.90  inc VAT
    From  £42.42  ex VAT
  5. EcoTherm Eco-Cavity Cavity Wall Insulation
    EcoTherm Eco-Cavity Cavity Wall Insulation
    As low as
    From  £50.90  inc VAT
    From  £42.42  ex VAT
  6. Kooltherm K108 Cavity Board
    Kingspan Kooltherm K108 Cavity Board
    As low as
    From  £90.24  inc VAT
    From  £75.20  ex VAT
  7. Isover CWS Cavity Wall System Insulation
    Isover CWS36 Cavity Wall System Insulation
    As low as
    From  £37.14  inc VAT
    From  £30.95  ex VAT
  8. Speedline Cavity Closers
    Alticloser XPS Cavity Closers
    As low as
    From  £63.00  inc VAT
    From  £52.50  ex VAT
  9. Rockwool Cavity Insulation
    Rockwool Full Fill Cavity Insulation
    As low as
    From  £28.80  inc VAT
    From  £24.00  ex VAT
  10. Earthwool Dritherm Cavity Slab 37 Standard
    Earthwool Dritherm Cavity Slab 37 Standard
    As low as
    From  £15.90  inc VAT
    From  £13.25  ex VAT

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Cavity Wall Insulation

What is cavity wall insulation?

Cavity wall insulation sits between two separate walls, in the gap between them. 


How does cavity wall insulation work?

Cavity wall insulation helps to store heat within the inner walls, pushing it back into the room and holding it there for longer.  This means you get a more even temperature in a room and a reduction of draughts. 


How to check if your house has cavity wall insualtion.

If your home was built after the 1920s, it's likely it has cavity walls. And if it was built before 2000, it's likely they are not filled. The best way to check though, is to get a professional to do it for you. 


The benefits of cavity wall insualtion.

  • Cavity wall insulation is a smart way to save heat and money. 
  • The Goverment regards cavity wall insulation as one of the the most effective ways to save energy and reduce carbon dioxide emissions.
  • It's fairly quick, simple and mess free to install.
  • You may be eligible for a grant or funding to help with costs via the Government or your energy supplier.