Cavity Barriers

A range of cavity barriers for masonry and timber frames. Both full fill and expanding are available. IF you are looking for a size that is not showing, then please get in touch.
ENVIROGRAF CV30/6 Flexible Strip Cavity Barrier - 2m x 30mm x 6mm (50-60mm Gap) | Insulation Merchant
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  • 160mm Mayplas Timber Frame Cavity Barrier TCB MP551 CFB (180x150mm) - pack of 5 | Insulation Merchant 160mm Mayplas Timber Frame Cavity Barrier TCB MP551 CFB (180x150mm) - pack of 5 | Insulation Merchant
    TCB CAVITY BARRIER by Mayplas

    160mm Mayplas Timber Frame Cavity Barrier TCB MP551 CFB (180x150mm) - pack of 5

    £ Looking for a price?

    Add to a quote for our best rate.

  • 155mm Mayplas Timber Frame Cavity Barrier TCB MP551 CFB (175x150mm) - pack of 5 | Insulation Merchant 155mm Mayplas Timber Frame Cavity Barrier TCB MP551 CFB (175x150mm) - pack of 5 | Insulation Merchant
    TCB CAVITY BARRIER by Mayplas

    155mm Mayplas Timber Frame Cavity Barrier TCB MP551 CFB (175x150mm) - pack of 5

    £ Looking for a price?

    Add to a quote for our best rate.

  • ENVIROGRAF Flexible Foiled Cavity Barrier (WB & VWB) - ALL SIZES | Insulation Merchant ENVIROGRAF Flexible Foiled Cavity Barrier (WB & VWB) - ALL SIZES | Insulation Merchant
    WB by Envirograf

    ENVIROGRAF Flexible Foiled Cavity Barrier (WB & VWB) - ALL SIZES

    From £12.38
    £12.38 per LM (linear metre)
    From £12.38
    £12.38 per LM (linear metre)
    Save £-12.38
  • ENVIROGRAF Flexible Sponge Rainscreen Cavity Barrier (RSF) - ALL SIZES | Insulation Merchant ENVIROGRAF Flexible Sponge Rainscreen Cavity Barrier (RSF) - ALL SIZES | Insulation Merchant
    RSF by Envirograf

    ENVIROGRAF Flexible Sponge Rainscreen Cavity Barrier (RSF) - ALL SIZES

    From £15.47
    £15.47 per LM (linear metre)
    From £15.47
    £15.47 per LM (linear metre)
    Save £-15.47
  • ENVIROGRAF FFCB Rainscreen Fast Fix Cavity Barrier - 1220mm x 130mm x 60mm (170mm cavity) | Insulation Merchant ENVIROGRAF FFCB Rainscreen Fast Fix Cavity Barrier - 1220mm x 130mm x 60mm (170mm cavity) | Insulation Merchant
    FFCB by Envirograf

    ENVIROGRAF FFCB Rainscreen Fast Fix Cavity Barrier - 1220mm x 130mm x 60mm (170mm cavity)

    £ Looking for a price?

    Add to a quote for our best rate.

  • 70mm Mayplas Timber Frame Cavity Barrier TCB 551 (85x100mm) - pack of 20 | Insulation Merchant 70mm Mayplas Timber Frame Cavity Barrier TCB 551 (85x100mm) - pack of 20 | Insulation Merchant
    TCB CAVITY BARRIER by Mayplas

    70mm Mayplas Timber Frame Cavity Barrier TCB 551 (85x100mm) - pack of 20

    £ Looking for a price?

    Add to a quote for our best rate.

  • 60mm Mayplas Timber Frame Cavity Barrier TCB 551 (75x90mm) - pack of 40 | Insulation Merchant 60mm Mayplas Timber Frame Cavity Barrier TCB 551 (75x90mm) - pack of 40 | Insulation Merchant
    TCB CAVITY BARRIER by Mayplas

    60mm Mayplas Timber Frame Cavity Barrier TCB 551 (75x90mm) - pack of 40

    £ Looking for a price?

    Add to a quote for our best rate.

  • 70mm Mayplas Timber Frame Cavity Barrier TCB 551 (85x100mm) - per length | Insulation Merchant 70mm Mayplas Timber Frame Cavity Barrier TCB 551 (85x100mm) - per length | Insulation Merchant
    TCB CAVITY BARRIER by Mayplas

    70mm Mayplas Timber Frame Cavity Barrier TCB 551 (85x100mm) - per length

    £ Looking for a price?

    Add to a quote for our best rate.

  • 60mm Mayplas Timber Frame Cavity Barrier TCB 551 (75x90mm) - per length | Insulation Merchant 60mm Mayplas Timber Frame Cavity Barrier TCB 551 (75x90mm) - per length | Insulation Merchant
    TCB CAVITY BARRIER by Mayplas

    60mm Mayplas Timber Frame Cavity Barrier TCB 551 (75x90mm) - per length

    £ Looking for a price?

    Add to a quote for our best rate.

  • Delta MS 500 – Cavity Drain Membrane - 2 x 20m | Insulation Merchant Delta MS 500 – Cavity Drain Membrane - 2 x 20m | Insulation Merchant
    MS 500 by Delta Membranes

    Delta MS 500 – Cavity Drain Membrane - 2 x 20m

    £ Looking for a price?

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  • Delta MS 500 – Cavity Drain Membrane - 2.4 x 20m | Insulation Merchant Delta MS 500 – Cavity Drain Membrane - 2.4 x 20m | Insulation Merchant
    MS 500 by Delta Membranes

    Delta MS 500 – Cavity Drain Membrane - 2.4 x 20m

    £ Looking for a price?

    Add to a quote for our best rate.

  • Firezero Multi Sock Cavity Stop TCB (Red) - 1200mm x 131-140mm | Insulation Merchant Firezero Multi Sock Cavity Stop TCB (Red) - 1200mm x 131-140mm | Insulation Merchant
    TCB CAVITY BARRIER by Firezero

    Firezero Multi Sock Cavity Stop TCB (Red) - 1200mm x 131-140mm

    £6.83
    £6.83
    Save £-6.83