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

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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  • Pro Clima Contega Solido SL100 (Internal Single-sIded Corner Adhesive Tape) - 100mm x 30m | Insulation Merchant
    CONTEGA by Pro Clima

    Pro Clima Contega Solido SL100 (Internal Single-sIded Corner Adhesive Tape) - 100mm x 30m

    £66.03 per item
    £2.20 per LM (linear metre)
    inc. VAT
    £55.03 per item
    £1.83 per LM (linear metre)
    ex. VAT
    Save £-66.03
    £66.03 per item
    £2.20 per LM (linear metre)
    inc. VAT
    £0.00 Save £-55.03
    £55.03 per item
    £1.83 per LM (linear metre)
    ex. VAT
  • 80m Pro Clima Duplex Double Sided Membrane Tape | Insulation Merchant
    DUPLEX by Pro Clima

    80m Pro Clima Duplex Double Sided Membrane Tape

    £28.82 per item
    £0.36 per LM (linear metre)
    inc. VAT
    £24.02 per item
    £0.30 per LM (linear metre)
    ex. VAT
    Save £-28.82
    £28.82 per item
    £0.36 per LM (linear metre)
    inc. VAT
    £0.00 Save £-24.02
    £24.02 per item
    £0.30 per LM (linear metre)
    ex. VAT
  • Pro Clima Kaflex Post - Retrofit Airtight Cable Grommet (Pack of 10) | Insulation Merchant
    KAFLEX by Pro Clima

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

    £34.14 per item
    £3.41 per ea
    inc. VAT
    £28.45 per item
    £2.85 per ea
    ex. VAT
    £0.00 Save £-34.14
    £34.14 per item
    £3.41 per ea
    inc. VAT
    £0.00 Save £-28.45
    £28.45 per item
    £2.85 per ea
    ex. VAT
  • Pro Clima Tescon Naideck - Sealing Adhesive Tape (50mm x 20m) | Insulation Merchant
    TESCON by Pro Clima

    Pro Clima Tescon Naideck - Sealing Adhesive Tape (50mm x 20m)

    £23.22 per item
    inc. VAT
    £19.35 per item
    ex. VAT
    Save £-23.22
    £23.22 per item
    inc. VAT
    £0.00 Save £-19.35
    £19.35 per item
    ex. VAT
  • SIGA Wigluv® 60 External Adhesive Tape (40m x 60mm) | Insulation Merchant
    WIGLUV® by SIGA

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

    £47.10 per item
    £1.17 per LM (linear metre)
    inc. VAT
    £39.25 per item
    £0.98 per LM (linear metre)
    ex. VAT
    Save £-47.10
    £47.10 per item
    £1.17 per LM (linear metre)
    inc. VAT
    £0.00 Save £-39.25
    £39.25 per item
    £0.98 per LM (linear metre)
    ex. VAT
  • Pro Clima Roflex 20 - Airtight Pipe Grommet (Pack of 15) | Insulation Merchant
    ROFLEX by Pro Clima

    Pro Clima Roflex 20 - Airtight Pipe Grommet (Pack of 15)

    £48.69 per item
    £3.24 per ea
    inc. VAT
    £40.58 per item
    £2.71 per ea
    ex. VAT
    Save £-48.69
    £48.69 per item
    £3.24 per ea
    inc. VAT
    £0.00 Save £-40.58
    £40.58 per item
    £2.71 per ea
    ex. VAT
  • Pro Clima Compego Tape | Insulation Merchant
    COMPEGO by Pro Clima

    Pro Clima Compego Tape

    From £23.22 per item
    inc. VAT
    From £19.35 per item
    ex. VAT
    Save £-23.22
    From £23.22 per item
    inc. VAT
    £0.00 Save £-19.35
    From £19.35 per item
    ex. VAT
  • Pro Clima Kaflex Mono - Airtight Cable Grommet (Pack of 15) | Insulation Merchant
    KAFLEX by Pro Clima

    Pro Clima Kaflex Mono - Airtight Cable Grommet (Pack of 15)

    £43.98 per item
    inc. VAT
    £36.65 per item
    ex. VAT
    Save £-43.98
    £43.98 per item
    inc. VAT
    £0.00 Save £-36.65
    £36.65 per item
    ex. VAT
  • Pro Clima Aerosanna Visconn Spray/Paintable Airtight Sealant Membrane
    AEROSANA by Pro Clima

    Pro Clima Aerosanna Visconn Spray/Paintable Airtight Sealant Membrane

    From £12.72 per item
    inc. VAT
    From £10.60 per item
    ex. VAT
    £0.00 Save £-12.72
    From £12.72 per item
    inc. VAT
    £0.00 Save £-10.60
    From £10.60 per item
    ex. VAT
  • SIGA Majcoat® 200 SOB Diffusion Open Roof Breather Membrane - 1.5m x 50m | Insulation Merchant
    MAJCOAT® by SIGA

    SIGA Majcoat® 200 SOB Diffusion Open Roof Breather Membrane - 1.5m x 50m

    £317.65 per item
    £4.23 per m²
    inc. VAT
    £264.71 per item
    £3.53 per m²
    ex. VAT
    Save £-317.65
    £317.65 per item
    £4.23 per m²
    inc. VAT
    £0.00 Save £-264.71
    £264.71 per item
    £3.53 per m²
    ex. VAT
  • SIGA Majrex® 200 (1-directional) Airtight Humidity Vapour Control Layer - 1.5 x 50m (75m²) | Insulation Merchant
    MAJREX® by SIGA

    SIGA Majrex® 200 (1-directional) Airtight Humidity Vapour Control Layer - 1.5 x 50m (75m²)

    £380.90 per item
    £5.07 per m²
    inc. VAT
    £317.42 per item
    £4.23 per m²
    ex. VAT
    Save £-380.90
    £380.90 per item
    £5.07 per m²
    inc. VAT
    £0.00 Save £-317.42
    £317.42 per item
    £4.23 per m²
    ex. VAT
  • Pro Clima Extoseal Encors - 100mm x 20m | Insulation Merchant
    EXTOSEAL by Pro Clima

    Pro Clima Extoseal Encors - 100mm x 20m

    £101.03 per item
    £5.05 per LM (linear metre)
    inc. VAT
    £84.19 per item
    £4.21 per LM (linear metre)
    ex. VAT
    Save £-101.03
    £101.03 per item
    £5.05 per LM (linear metre)
    inc. VAT
    £0.00 Save £-84.19
    £84.19 per item
    £4.21 per LM (linear metre)
    ex. VAT
  • SIGA Twinet® 20 VCL Mounting Tape | Insulation Merchant
    TWINET® by SIGA

    SIGA Twinet® 20 VCL Mounting Tape

    £39.35 per item
    £0.78 per LM (linear metre)
    inc. VAT
    £32.79 per item
    £0.66 per LM (linear metre)
    ex. VAT
    Save £-39.35
    £39.35 per item
    £0.78 per LM (linear metre)
    inc. VAT
    £0.00 Save £-32.79
    £32.79 per item
    £0.66 per LM (linear metre)
    ex. VAT
  • Pro Clima Orcon F - Flexible airtight solid acrylic sealant (600ml) | Insulation Merchant
    ORCON by Pro Clima

    Pro Clima Orcon F - Flexible airtight solid acrylic sealant (600ml)

    £15.17 per item
    £0.02 per ml
    inc. VAT
    £12.64 per item
    £0.02 per ml
    ex. VAT
    Save £-15.17
    £15.17 per item
    £0.02 per ml
    inc. VAT
    £0.00 Save £-12.64
    £12.64 per item
    £0.02 per ml
    ex. VAT
  • Pro Clima Kaflex Duo - Airtight Cable Grommet (Pack of 15) | Insulation Merchant
    KAFLEX by Pro Clima

    Pro Clima Kaflex Duo - Airtight Cable Grommet (Pack of 15)

    £43.98 per item
    £2.93 per ea
    inc. VAT
    £36.65 per item
    £2.44 per ea
    ex. VAT
    £0.00 Save £-43.98
    £43.98 per item
    £2.93 per ea
    inc. VAT
    £0.00 Save £-36.65
    £36.65 per item
    £2.44 per ea
    ex. VAT
  • SIGA Majpell® 5 Vapour Control Layer - 1.5 x 50m (75m²) | Insulation Merchant
    MAJPELL® by SIGA

    SIGA Majpell® 5 Vapour Control Layer - 1.5 x 50m (75m²)

    £233.70 per item
    £3.11 per m²
    inc. VAT
    £194.75 per item
    £2.60 per m²
    ex. VAT
    Save £-233.70
    £233.70 per item
    £3.11 per m²
    inc. VAT
    £0.00 Save £-194.75
    £194.75 per item
    £2.60 per m²
    ex. VAT
  • Pro Clima Solitex Fronta Quattro - Open Facade Membrane (1.5m x 50m) | Insulation Merchant
    SOLITEX by Pro Clima

    Pro Clima Solitex Fronta Quattro - Open Facade Membrane (1.5m x 50m)

    £371.85 per item
    £4.95 per m²
    inc. VAT
    £309.88 per item
    £4.13 per m²
    ex. VAT
    £0.00 Save £-371.85
    £371.85 per item
    £4.95 per m²
    inc. VAT
    £0.00 Save £-309.88
    £309.88 per item
    £4.13 per m²
    ex. VAT
  • Pro Clima Contega Solido EXO100 (External Single-sIded Corner Adhesive Tape) - 30m x 100mm | Insulation Merchant
    CONTEGA by Pro Clima

    Pro Clima Contega Solido EXO100 (External Single-sided Corner Adhesive Tape) - 30m x 100mm

    £66.03 per item
    inc. VAT
    £55.03 per item
    ex. VAT
    Save £-66.03
    £66.03 per item
    inc. VAT
    £0.00 Save £-55.03
    £55.03 per item
    ex. VAT
  • SIGA Fentrim® grommet (Black) - External Airtight Cable & Pipe Sealing | Insulation Merchant
    FENTRIM® by SIGA

    SIGA Fentrim® grommet (Black) - External Airtight Cable & Pipe Sealing

    From £4.30 per item
    inc. VAT
    From £3.58 per item
    ex. VAT
    Save £-4.30
    From £4.30 per item
    inc. VAT
    £0.00 Save £-3.58
    From £3.58 per item
    ex. VAT
  • SIGA Fentrim® grommet (White) - Internal Airtight Cable & Pipe Sealing | Insulation Merchant
    FENTRIM® by SIGA

    SIGA Fentrim® grommet (White) - Internal Airtight Cable & Pipe Sealing

    From £4.30 per item
    inc. VAT
    From £3.58 per item
    ex. VAT
    Save £-4.30
    From £4.30 per item
    inc. VAT
    £0.00 Save £-3.58
    From £3.58 per item
    ex. VAT