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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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
  • SIGA Wigluv® 20/40 Split External Adhesive Tape (60mm x 25m) | Insulation Merchant
    WIGLUV® by SIGA

    SIGA Wigluv® 20/40 Split External Adhesive Tape (60mm x 25m)

    £43.20 per item
    £1.72 per LM (linear metre)
    inc. VAT
    £36.00 per item
    £1.44 per LM (linear metre)
    ex. VAT
    Save £-43.20
    £43.20 per item
    £1.72 per LM (linear metre)
    inc. VAT
    £0.00 Save £-36.00
    £36.00 per item
    £1.44 per LM (linear metre)
    ex. VAT
  • Pro Clima Contega Solido SL-D80 (External Double-sIded Corner Adhesive Tape) - 80mm x 30m | Insulation Merchant
    Sale
    CONTEGA SOLIDO SL-D by Pro Clima

    Pro Clima Contega Solido SL-D80 (External Double-sIded Corner Adhesive Tape) - 80mm x 30m

    £66.40 per item
    £2.21 per LM (linear metre)
    inc. VAT
    £55.33 per item
    £1.84 per LM (linear metre)
    ex. VAT
    £68.16 Save £1.76
    £66.40 per item
    £2.21 per LM (linear metre)
    inc. VAT
    £56.80 Save £1.47
    £55.33 per item
    £1.84 per LM (linear metre)
    ex. VAT
  • Pro Clima Contega Solido SL150 (Internal Single-sIded Corner Adhesive Tape) - 150mm x 30m | Insulation Merchant
    Sale
    CONTEGA SOLIDO SL by Pro Clima

    Pro Clima Contega Solido SL150 (Internal Single-sIded Corner Adhesive Tape) - 150mm x 30m

    £88.90 per item
    £2.96 per LM (linear metre)
    inc. VAT
    £74.08 per item
    £2.47 per LM (linear metre)
    ex. VAT
    £91.32 Save £2.42
    £88.90 per item
    £2.96 per LM (linear metre)
    inc. VAT
    £76.10 Save £2.02
    £74.08 per item
    £2.47 per LM (linear metre)
    ex. VAT
  • 60mm SIGA Wigluv® Black 60 External Adhesive Tape - (40m x 60mm) | Insulation Merchant
    WIGLUV® by SIGA

    60mm SIGA Wigluv® Black 60 External Adhesive Tape - (40m x 60mm)

    From £63.90 per item
    £1.59 per LM (linear metre)
    inc. VAT
    From £53.25 per item
    £1.33 per LM (linear metre)
    ex. VAT
    Save £-63.90
    From £63.90 per item
    £1.59 per LM (linear metre)
    inc. VAT
    £0.00 Save £-53.25
    From £53.25 per item
    £1.33 per LM (linear metre)
    ex. VAT
  • Pro Clima Roflex 100 - Airtight Pipe Grommet (Pack of 10) | Insulation Merchant
    Sale
    ROFLEX by Pro Clima

    Pro Clima Roflex 100 - Airtight Pipe Grommet (Pack of 10)

    £48.90 per item
    £4.89 per ea
    inc. VAT
    £40.75 per item
    £4.08 per ea
    ex. VAT
    £50.40 Save £1.50
    £48.90 per item
    £4.89 per ea
    inc. VAT
    £42.00 Save £1.25
    £40.75 per item
    £4.08 per ea
    ex. VAT
  • Pro Clima Dasatop - 1.5m x 50m (75m²) | Insulation Merchant
    Sale 10%
    DASATOP by Pro Clima

    Pro Clima Dasatop - 1.5m x 50m (75m²)

    £197.90 per item
    £2.63 per m²
    inc. VAT
    £164.92 per item
    £2.20 per m²
    ex. VAT
    £219.96 Save £22.06
    £197.90 per item
    £2.63 per m²
    inc. VAT
    £183.30 Save £18.38
    £164.92 per item
    £2.20 per m²
    ex. VAT
  • Pro Clima Constivap 2.3 Plus - 1.5m x 50m | Insulation Merchant
    Sale 10%
    CONSTIVAP by Pro Clima

    Pro Clima Constivap 2.3 Plus - 1.5m x 50m

    £152.60 per item
    inc. VAT
    £127.17 per item
    ex. VAT
    £170.28 Save £17.68
    £152.60 per item
    inc. VAT
    £141.90 Save £14.73
    £127.17 per item
    ex. VAT
  • SIGA Majvest® 700 SOB - Open Facade Membrane (1.5m x 33.4m) | Insulation Merchant
    MAJVEST® by SIGA

    SIGA Majvest® 700 SOB - Open Facade Membrane (1.5m x 33.4m)

    £378.96 per item
    £7.56 per m²
    inc. VAT
    £315.80 per item
    £6.30 per m²
    ex. VAT
    Save £-378.96
    £378.96 per item
    £7.56 per m²
    inc. VAT
    £0.00 Save £-315.80
    £315.80 per item
    £6.30 per m²
    ex. VAT
  • Pro Clima DB+ - 1.35m x 50m | Insulation Merchant
    Sale 11%
    DB+ by Pro Clima

    Pro Clima DB+ - 1.35m x 50m

    £203.90 per item
    £3.02 per m²
    inc. VAT
    £169.92 per item
    £2.52 per m²
    ex. VAT
    £231.36 Save £27.46
    £203.90 per item
    £3.02 per m²
    inc. VAT
    £192.80 Save £22.88
    £169.92 per item
    £2.52 per m²
    ex. VAT
  • Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 5-10mm (Roll 20mm x 5.6m) | Insulation Merchant
    Sale
    CONTEGA FIDEN EXO by Pro Clima

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

    £8.94 per item
    inc. VAT
    £7.45 per item
    ex. VAT
    £9.00 Save £0.06
    £8.94 per item
    inc. VAT
    £7.50 Save £0.05
    £7.45 per item
    ex. VAT
  • Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 10-18mm - Roll 20mm x 2.6m | Insulation Merchant
    Sale
    CONTEGA FIDEN EXO by Pro Clima

    Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 10-18mm - Roll 20mm x 2.6m

    £8.70 per item
    inc. VAT
    £7.25 per item
    ex. VAT
    £8.76 Save £0.06
    £8.70 per item
    inc. VAT
    £7.30 Save £0.05
    £7.25 per item
    ex. VAT
  • SIGA Wigluv® 100 External Adhesive Tape - (100mm x 25m) | Insulation Merchant
    WIGLUV® by SIGA

    SIGA Wigluv® 100 External Adhesive Tape - (100mm x 25m)

    £58.05 per item
    £2.32 per LM (linear metre)
    inc. VAT
    £48.38 per item
    £1.94 per LM (linear metre)
    ex. VAT
    Save £-58.05
    £58.05 per item
    £2.32 per LM (linear metre)
    inc. VAT
    £0.00 Save £-48.38
    £48.38 per item
    £1.94 per LM (linear metre)
    ex. VAT
  • Pro Clima Tescon Invis - 100mm x 30m | Insulation Merchant
    Sale
    TESCON by Pro Clima

    Pro Clima Tescon Invis - 100mm x 30m

    £52.90 per item
    £1.76 per LM (linear metre)
    inc. VAT
    £44.08 per item
    £1.47 per LM (linear metre)
    ex. VAT
    £54.36 Save £1.46
    £52.90 per item
    £1.76 per LM (linear metre)
    inc. VAT
    £45.30 Save £1.22
    £44.08 per item
    £1.47 per LM (linear metre)
    ex. VAT
  • SIGA Fentrim® IS 20 (Pre-folded Internal Corner Tape) - All sizes | Insulation Merchant
    Internal Use
    FENTRIM® by SIGA

    SIGA Fentrim® IS 20 (Pre-folded Internal Corner Tape) - All sizes

    From £54.05 per item
    £2.16 per LM (linear metre)
    inc. VAT
    From £45.04 per item
    £1.80 per LM (linear metre)
    ex. VAT
    Save £-54.05
    From £54.05 per item
    £2.16 per LM (linear metre)
    inc. VAT
    £0.00 Save £-45.04
    From £45.04 per item
    £1.80 per LM (linear metre)
    ex. VAT
  • SIGA Majvest® 200 - Breather Membrane (Particularly for Closed Facade) | Insulation Merchant
    MAJVEST® by SIGA

    SIGA Majvest® 200 - Breather Membrane (Particularly for Closed Facade)

    £195.45 per item
    £2.60 per m²
    inc. VAT
    £162.88 per item
    £2.17 per m²
    ex. VAT
    Save £-195.45
    £195.45 per item
    £2.60 per m²
    inc. VAT
    £0.00 Save £-162.88
    £162.88 per item
    £2.17 per m²
    ex. VAT
  • SIGA Rissan® 100 VCL & Jointing Airtightness Tape - 100mm x 25m | Insulation Merchant
    RISSAN® by SIGA

    SIGA Rissan® 100 VCL & Jointing Airtightness Tape - 100mm x 25m

    £55.80 per item
    £2.23 per LM (linear metre)
    inc. VAT
    £46.50 per item
    £1.86 per LM (linear metre)
    ex. VAT
    Save £-55.80
    £55.80 per item
    £2.23 per LM (linear metre)
    inc. VAT
    £0.00 Save £-46.50
    £46.50 per item
    £1.86 per LM (linear metre)
    ex. VAT
  • Pro Clima Kaflex Multi - Airtight Cable Grommet (Pack of 10) | Insulation Merchant
    Sale
    KAFLEX by Pro Clima

    Pro Clima Kaflex Multi - Airtight Cable Grommet (Pack of 10)

    £104.90 per item
    £10.49 per ea
    inc. VAT
    £87.42 per item
    £8.74 per ea
    ex. VAT
    £106.20 Save £1.30
    £104.90 per item
    £10.49 per ea
    inc. VAT
    £88.50 Save £1.08
    £87.42 per item
    £8.74 per ea
    ex. VAT
  • Pro Clima Roflex 150 - Airtight Pipe Grommet (Pack of 10) | Insulation Merchant
    Sale 11%
    ROFLEX by Pro Clima

    Pro Clima Roflex 150 - Airtight Pipe Grommet (Pack of 10)

    £60.40 per item
    £6.04 per ea
    inc. VAT
    £50.33 per item
    £5.03 per ea
    ex. VAT
    £68.40 Save £8.00
    £60.40 per item
    £6.04 per ea
    inc. VAT
    £57.00 Save £6.67
    £50.33 per item
    £5.03 per ea
    ex. VAT
  • ROTHOBLAAS Seal Band Airtightness Tape (60mm x 25m)
    Sale 5%
    Internal Use
    SEAL BAND by Rothoblaas

    ROTHOBLAAS Seal Band Airtightness Tape (60mm x 25m)

    From £0.95 per item
    £0.03 per LM (linear metre)
    inc. VAT
    From £0.79 per item
    £0.03 per LM (linear metre)
    ex. VAT
    £1.00 Save £0.05
    From £0.95 per item
    £0.03 per LM (linear metre)
    inc. VAT
    £0.83 Save £0.04
    From £0.79 per item
    £0.03 per LM (linear metre)
    ex. VAT
  • Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 3-6mm - Roll 12mm x 8m | Insulation Merchant
    Sale 11%
    CONTEGA FIDEN EXO by Pro Clima

    Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 3-6mm - Roll 12mm x 8m

    £5.00 per item
    inc. VAT
    £4.17 per item
    ex. VAT
    £5.64 Save £0.64
    £5.00 per item
    inc. VAT
    £4.70 Save £0.53
    £4.17 per item
    ex. VAT