Airtight & Windtight Systems

Airtightness and Widtightness are essential aspects to consider when building or renovating. Air leakage into and out of a property can be detrimental to the thermal performance of insulation. Creating an airtight seal in the property helps minimize heat loss or gain and eliminates drafts ensuring a consistent indoor temperature. It also helps eliminate the entry of pollutants, allergens, and moisture, resulting in a healthier indoor environment. 

Shop our range of airtight membranes, tapes, grommets, and sealants.

Airtight & Windtight Systems

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Airtight & Windtight Membranes

Airtight & Windtight Membranes

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Pro Clima Contega Solido SL80 (Internal Single-sIded Corner Adhesive Tape) - 80mm x 30m | Insulation Merchant

Airtight & Windtight Tapes and Sealants

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Pro Clima Aerosanna Visconn Spray/Paintable Airtight Sealant Membrane | Insulation Merchant

Liquid Airtight Membranes

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Airtight Grommets

Airtight Grommets

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Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 5-10mm (Roll 20mm x 5.6m) | Insulation Merchant

Expanding Tapes

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Pro Clima

Pro Clima

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Rothoblaas

Rothoblaas

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SIGA

SIGA

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Learn more from our blogs

Insulating Ground Floors

To undertake a ground floor thermal insulation upgrade it is first important to establish if it is possible or not. In domestic buildings, broadly speaking, there are two styles of floor type - solid ground floor and suspended floor, each with its pros and cons.

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Showing 172 of 172 products
  • ROTHOBLAAS Universal Primer - 1kg
    Sale 5%
    PRIMER by Rothoblaas

    ROTHOBLAAS Universal Primer - 1kg

    £22.23 per item
    inc. VAT
    £18.53 per item
    ex. VAT
    £23.41 Save £1.18
    £22.23 per item
    inc. VAT
    £19.51 Save £0.98
    £18.53 per item
    ex. VAT
  • ROTHOBLAAS Barrier ALU NET Adhesive 300 (Reflective Self-adhesive Vapour Control Membrane) (1.45m x 50m)
    Sale 5%
    BARRIER by Rothoblaas

    ROTHOBLAAS Barrier ALU NET Adhesive 300 (Reflective Self-adhesive Vapour Control Membrane) (1.45m x 50m)

    £650.73 per item
    £8.98 per m²
    inc. VAT
    £542.28 per item
    £7.48 per m²
    ex. VAT
    £684.98 Save £34.25
    £650.73 per item
    £8.98 per m²
    inc. VAT
    £570.82 Save £28.54
    £542.28 per item
    £7.48 per m²
    ex. VAT
  • ROTHOBLAAS Barrier ALU Fire A2 SD2500 (Reflective Vapour Control Membrane) (1.2m x 50m)
    Sale 5%
    TRASPIR by Rothoblaas

    ROTHOBLAAS Barrier ALU Fire A2 SD2500 (Reflective Vapour Control Membrane) (1.2m x 50m)

    £504.82 per item
    £8.41 per m²
    inc. VAT
    £420.68 per item
    £7.01 per m²
    ex. VAT
    £531.39 Save £26.57
    £504.82 per item
    £8.41 per m²
    inc. VAT
    £442.83 Save £22.14
    £420.68 per item
    £7.01 per m²
    ex. VAT
  • ROTHOBLAAS Traspir Adhesive 260 (Breathable Self-adhesive Membrane) (1.45m x 50m)
    Sale 5%
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir Adhesive 260 (Breathable Self-adhesive Membrane) (1.45m x 50m)

    £604.61 per item
    £8.34 per m²
    inc. VAT
    £503.84 per item
    £6.95 per m²
    ex. VAT
    £636.44 Save £31.83
    £604.61 per item
    £8.34 per m²
    inc. VAT
    £530.37 Save £26.53
    £503.84 per item
    £6.95 per m²
    ex. VAT
  • ROTHOBLAAS Traspir EVO 160 TT (Monolithic Breather Membrane) (1.5m x 50m)
    Sale 5%
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir EVO 160 TT (Monolithic Breather Membrane) (1.5m x 50m)

    £232.27 per item
    £3.09 per m²
    inc. VAT
    £193.56 per item
    £2.58 per m²
    ex. VAT
    £244.50 Save £12.23
    £232.27 per item
    £3.09 per m²
    inc. VAT
    £203.75 Save £10.19
    £193.56 per item
    £2.58 per m²
    ex. VAT
  • ROTHOBLAAS Lama (Insulation Knife)
    Sale 5%
    LAMA by Rothoblaas

    ROTHOBLAAS Lama (Insulation Knife)

    £33.01 per item
    inc. VAT
    £27.51 per item
    ex. VAT
    £34.75 Save £1.74
    £33.01 per item
    inc. VAT
    £28.96 Save £1.45
    £27.51 per item
    ex. VAT
  • ROTHOBLAAS Rain Tube (Temporary Downpipe)
    Sale 5%
    RAIN TUBE by Rothoblaas

    ROTHOBLAAS Rain Tube (Temporary Downpipe)

    £56.87 per item
    inc. VAT
    £47.39 per item
    ex. VAT
    £59.87 Save £3.00
    £56.87 per item
    inc. VAT
    £49.89 Save £2.50
    £47.39 per item
    ex. VAT
  • ROTHOBLAAS Alu Butyl Band Tape
    Sale 5%
    ALU BUTYL BAND by Rothoblaas

    ROTHOBLAAS Alu Butyl Band Tape

    From £20.42 per item
    £2.04 per LM (linear metre)
    inc. VAT
    From £17.02 per item
    £1.70 per LM (linear metre)
    ex. VAT
    £21.50 Save £1.08
    From £20.42 per item
    £2.04 per LM (linear metre)
    inc. VAT
    £17.92 Save £0.90
    From £17.02 per item
    £1.70 per LM (linear metre)
    ex. VAT
  • ROTHOBLAAS Smart Foam (Foam Sealant)
    Sale 5%
    SMART FOAM by Rothoblaas

    ROTHOBLAAS Smart Foam (Foam Sealant)

    £7.54 per item
    inc. VAT
    £6.28 per item
    ex. VAT
    £7.94 Save £0.40
    £7.54 per item
    inc. VAT
    £6.62 Save £0.33
    £6.28 per item
    ex. VAT
  • ROTHOBLAAS Fluid Membrane (Brush & Spray liquid membrane) 10kg
    Sale 5%
    FLUID MEMBRANE by Rothoblaas

    ROTHOBLAAS Fluid Membrane (Brush & Spray liquid membrane) 10kg

    £78.78 per item
    inc. VAT
    £65.65 per item
    ex. VAT
    £82.93 Save £4.15
    £78.78 per item
    inc. VAT
    £69.11 Save £3.46
    £65.65 per item
    ex. VAT
  • ROTHOBLAAS Traspir EVO UV 210 TT (Monolithic UV Breather Membrane) (1.5m x 50m)
    Sale 5%
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir EVO UV 210 TT (Monolithic UV Breather Membrane) (1.5m x 50m)

    £332.66 per item
    £4.43 per m²
    inc. VAT
    £277.22 per item
    £3.70 per m²
    ex. VAT
    £350.17 Save £17.51
    £332.66 per item
    £4.43 per m²
    inc. VAT
    £291.81 Save £14.59
    £277.22 per item
    £3.70 per m²
    ex. VAT
  • ROTHOBLAAS Traspir EVO Seal 200 (Monolithic Breather Membrane) (1.5m x 50m)
    Sale 5%
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir EVO Seal 200 (Monolithic Breather Membrane) (1.5m x 50m)

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    Add to a quote for our best rate.

  • ROTHOBLAAS Traspir ALU 200 (Reflective Breather Membrane) (1.5m x 50m)
    Sale 5%
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir ALU 200 (Reflective Breather Membrane) (1.5m x 50m)

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    Add to a quote for our best rate.

  • ROTHOBLAAS Traspir 200 (Breather Membrane) (1.5m x 50m)
    Sale 5%
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir 200 (Breather Membrane) (1.5m x 50m)

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  • ROTHOBLAAS Traspir NET 160 (Breather Membrane) (1.5m x 50m)
    Sale 5%
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir NET 160 (Breather Membrane) (1.5m x 50m)

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  • ROTHOBLAAS Traspir EVO UV 115 (Monolithic Breather Membrane) (1.5m x 50m)
    Sale 5%
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir EVO UV 115 (Monolithic Breather Membrane) (1.5m x 50m)

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  • ROTHOBLAAS Clima Control NET 160 TT (Reinforced Variable Vapour Control Membrane) (1.5m x 50m)
    Sale 5%
    Internal Use
    CLIMA CONTROL by Rothoblaas

    ROTHOBLAAS Clima Control NET 160 TT (Reinforced Variable Vapour Control Membrane) (1.5m x 50m)

    £277.40 per item
    £3.69 per m²
    inc. VAT
    £231.17 per item
    £3.08 per m²
    ex. VAT
    £292.00 Save £14.60
    £277.40 per item
    £3.69 per m²
    inc. VAT
    £243.33 Save £12.17
    £231.17 per item
    £3.08 per m²
    ex. VAT
  • ROTHOBLAAS Clima Control NET 145 (Reinforced Variable Vapour Control Membrane) (1.5m x 50m)
    Sale 5%
    Internal Use
    CLIMA CONTROL by Rothoblaas

    ROTHOBLAAS Clima Control NET 145 (Reinforced Variable Vapour Control Membrane) (1.5m x 50m)

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  • ROTHOBLAAS Barrier ALU SD150 (Reflective Vapour Control Membrane) (1.5m x 50m)
    Sale 5%
    Internal Use
    BARRIER by Rothoblaas

    ROTHOBLAAS Barrier ALU SD150 (Reflective Vapour Control Membrane) (1.5m x 50m)

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    Add to a quote for our best rate.

  • ROTHOBLAAS Plaster Band OUT (Outdoor Renderable Adhesive Tape)
    Sale 5%
    External Use
    PLASTER BAND by Rothoblaas

    ROTHOBLAAS Plaster Band OUT (Outdoor Renderable Adhesive Tape)

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