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 minimise 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. 

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Airtight & Windtight Systems

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Airtight & Windtight Membranes

Airtight & Windtight Membranes

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Airtight & Windtight Tapes and Sealants

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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

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Rothoblaas

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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 174 of 174 products
  • Man Installling Extoseal Finoc Tape | Insulation Merchant
    Sale 15%
    EXTOSEAL by Pro Clima

    Pro Clima Extoseal Finoc

    From £53.76 per item
    £2.68 per LM (linear metre)
    inc. VAT
    From £44.80 per item
    £2.24 per LM (linear metre)
    ex. VAT
    £63.80 Save £10.04
    From £53.76 per item
    £2.68 per LM (linear metre)
    inc. VAT
    £53.17 Save £8.37
    From £44.80 per item
    £2.24 per LM (linear metre)
    ex. VAT
  • ROTHOBLAAS Barrier NET SD40 (Vapour Control Membrane) (1.5m x 50m)
    Internal Use
    BARRIER by Rothoblaas

    ROTHOBLAAS Barrier NET SD40 (Vapour Control Membrane) (1.5m x 50m)

    £60.33 per item
    £0.80 per m²
    inc. VAT
    £50.28 per item
    £0.67 per m²
    ex. VAT
    Save £-60.33
    £60.33 per item
    £0.80 per m²
    inc. VAT
    £0.00 Save £-50.28
    £50.28 per item
    £0.67 per m²
    ex. VAT
  • Pro Clima Contega Solido EXO-D100 (External Double-sIded Corner Adhesive Tape) - 30m x 100mm | Insulation Merchant
    Sale 5%
    CONTEGA SOLIDO EXO-D by Pro Clima

    Pro Clima Contega Solido EXO-D100 (External Double-sided Corner Adhesive Tape) - 30m x 100mm

    £77.50 per item
    £2.58 per LM (linear metre)
    inc. VAT
    £64.58 per item
    £2.15 per LM (linear metre)
    ex. VAT
    £81.60 Save £4.10
    £77.50 per item
    £2.58 per LM (linear metre)
    inc. VAT
    £68.00 Save £3.42
    £64.58 per item
    £2.15 per LM (linear metre)
    ex. VAT
  • SIGA Primur Roll (Flexible Membrane Seal) | Insulation Merchant
    PRIMUR® by SIGA

    SIGA Primur Roll (Flexible Membrane Seal)

    £21.00 per item
    £2.62 per LM (linear metre)
    inc. VAT
    £17.50 per item
    £2.19 per LM (linear metre)
    ex. VAT
    Save £-21.00
    £21.00 per item
    £2.62 per LM (linear metre)
    inc. VAT
    £0.00 Save £-17.50
    £17.50 per item
    £2.19 per LM (linear metre)
    ex. VAT
  • SIGA Dockskin® 100 Fibrous Surface Primer - 1kg bottle | Insulation Merchant-1kg
    DOCKSKIN® by SIGA

    SIGA Dockskin® 100 Fibrous Surface Primer - 1kg bottle

    £30.15 per item
    inc. VAT
    £25.13 per item
    ex. VAT
    Save £-30.15
    £30.15 per item
    inc. VAT
    £0.00 Save £-25.13
    £25.13 per item
    ex. VAT
  • SIGA Majcoat® 150 SOB Breather Membrane - 1.5m x 50m | Insulation Merchant
    MAJCOAT® by SIGA

    SIGA Majcoat® 150 SOB Breather Membrane - 1.5m x 50m

    £240.00 per item
    £3.20 per m²
    inc. VAT
    £200.00 per item
    £2.67 per m²
    ex. VAT
    Save £-240.00
    £240.00 per item
    £3.20 per m²
    inc. VAT
    £0.00 Save £-200.00
    £200.00 per item
    £2.67 per m²
    ex. VAT
  • Pro Clima Tescon Rapic (Hand Tearable Airtight Tape)
    TESCON by Pro Clima

    Pro Clima Tescon Rapic (Hand Tearable Airtight Tape)

    £31.80 per item
    £1.06 per LM (linear metre)
    inc. VAT
    £26.50 per item
    £0.88 per LM (linear metre)
    ex. VAT
    Save £-31.80
    £31.80 per item
    £1.06 per LM (linear metre)
    inc. VAT
    £0.00 Save £-26.50
    £26.50 per item
    £0.88 per LM (linear metre)
    ex. VAT
  • ROTHOBLAAS Vapor NET 110 (Reinforced Vapour Control Membrane) (1.5m x 50m)
    VAPOR NET 110 by Rothoblaas

    ROTHOBLAAS Vapor NET 110 (Reinforced Vapour Control Membrane) (1.5m x 50m)

    £91.53 per item
    £1.22 per m²
    inc. VAT
    £76.28 per item
    £1.02 per m²
    ex. VAT
    Save £-91.53
    £91.53 per item
    £1.22 per m²
    inc. VAT
    £0.00 Save £-76.28
    £76.28 per item
    £1.02 per m²
    ex. VAT
  • ROTHOBLAAS Membrane Glue
    MEMBRANE GLUE by Rothoblaas

    ROTHOBLAAS Membrane Glue

    From £1.00 per item
    inc. VAT
    From £0.83 per item
    ex. VAT
    Save £-1.00
    From £1.00 per item
    inc. VAT
    £0.00 Save £-0.83
    From £0.83 per item
    ex. VAT
  • ROTHOBLAAS Plaster Band IN (Indoor Plasterable Adhesive Tape)
    Internal Use
    PLASTER BAND by Rothoblaas

    ROTHOBLAAS Plaster Band IN (Indoor Plasterable Adhesive Tape)

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  • PRO CLIMA INSTAABOX Installation box - 320mm x 190mm (Pack of 10)
    Sale 4%
    INSTAABOX by Pro Clima

    PRO CLIMA INSTAABOX Installation box - 320mm x 190mm (Pack of 10)

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  • Siga Knife & Ruler Set | Insulation Merchant
    by SIGA

    Siga Knife & Ruler Set

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  • Pro Clima Roflex 300 - Airtight Pipe Grommet (Pack of 2) | Insulation Merchant
    Sale 7%
    ROFLEX by Pro Clima

    Pro Clima Roflex 300 - Airtight Pipe Grommet (Pack of 2)

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  • ROTHOBLAAS POP Safety Helmet - Grey
    Sale 32%
    Top Deals
    HELMET by Rothoblaas

    ROTHOBLAAS POP Safety Helmet - Grey

    £10.00 per item
    inc. VAT
    £8.33 per item
    ex. VAT
    £14.90 Save £4.90
    £10.00 per item
    inc. VAT
    £12.42 Save £4.08
    £8.33 per item
    ex. VAT
  • ROTHOBLAAS Traspir 110 - 1.5m x 50m (75m²)
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir 110 - 1.5m x 50m (75m²)

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  • Pro Clima Solitex Adhero Visto - Transparent Self Adhesive Air & Weathertight Membrane (1.5m x 30m)
    SOLITEX by Pro Clima

    Pro Clima Solitex Adhero Visto - Transparent Self Adhesive Air & Weathertight Membrane (1.5m x 30m)

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  • ROTHOBLAAS DGZ Cap Head Timber Insulation Woodscrew (50 p/bx)
    DGZ by Rothoblaas

    ROTHOBLAAS DGZ Cap Head Timber Insulation Woodscrew (50 p/bx)

    From £0.00 per item
    inc. VAT
    From £0.00 per item
    ex. VAT
    Save £0.00
    From £0.00 per item
    inc. VAT
    £0.00 Save £0.00
    From £0.00 per item
    ex. VAT
  • ROTHOBLAAS HBS Countersunk Woodscrew (100 p/bx)
    HBS by Rothoblaas

    ROTHOBLAAS HBS Countersunk Woodscrew (100 p/bx)

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  • ROTHOBLAAS TBS Flange Head Woodscrew (100 p/bx)
    TBS by Rothoblaas

    ROTHOBLAAS TBS Flange Head Woodscrew (100 p/bx)

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  • OVERNET by Rothoblaas

    ROTHOBLAAS Overnet Joining Staples

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    Add to a quote for our best rate.