Collection: 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 and windtight systems | Insulation Merchant

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Showing 122 of 122 products
  • Pro Clima Aerosanna Fleece
    AEROSANA FLEECE by Pro Clima

    Translation missing: en.products.product.sku:PC/AVFL

    Pro Clima Aerosanna Fleece

    Regular price
    €18,95 EUR ex. GB VAT
    Unit Price
    €0,75 per LM (linear metre)
    Unit Price
    €0,63 per LM (linear metre)
    Sale price
    €18,95 EUR ex. GB VAT
    Unit Price
    €0,75 per LM (linear metre)
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    €0,63 per LM (linear metre)
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  • Pro Clima Contega Solido EXO-D80 (External Double-sIded Corner Adhesive Tape) - 30m x 80mm
    CONTEGA SOLIDO EXO-D by Pro Clima

    Translation missing: en.products.product.sku:PC/SOLEXOD80

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

    Regular price
    €66,95 EUR ex. GB VAT
    Unit Price
    €2,23 per LM (linear metre)
    Unit Price
    €1,86 per LM (linear metre)
    Sale price
    €66,95 EUR ex. GB VAT
    Unit Price
    €2,23 per LM (linear metre)
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    €1,86 per LM (linear metre)
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  • SIGA Wigluv® black 20/40 Split External Adhesive Tape (60mm x 25m)
    WIGLUV® BLACK 20/40 by SIGA

    Translation missing: en.products.product.sku:SIG/WLB2040

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

    Regular price
    €59,95 EUR ex. GB VAT
    Unit Price
    €2,39 per LM (linear metre)
    Unit Price
    €2,00 per LM (linear metre)
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    €59,95 EUR ex. GB VAT
    Unit Price
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    €2,00 per LM (linear metre)
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  • SIGA Trestard® 420 black FR (Fire Rated Tape) - All Sizes
    TRESTARD® 420 by SIGA

    Translation missing: en.products.product.sku:SIG/T420-150

    SIGA Trestard® 420 black FR (Fire Rated Tape) - All Sizes

    Regular price
    From €134,95 EUR ex. GB VAT
    Unit Price
    €5,39 per LM (linear metre)
    Unit Price
    €4,50 per LM (linear metre)
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    From €134,95 EUR ex. GB VAT
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    €4,50 per LM (linear metre)
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  • SIGA Fentrim® 330 Grey Adhesive Tape - 150mm
    FENTRIM® 330 GREY by SIGA

    Translation missing: en.products.product.sku:SIG/F330G-150

    SIGA Fentrim® 330 Grey Adhesive Tape - 150mm

    Regular price
    €167,95 EUR ex. GB VAT
    Unit Price
    €6,71 per LM (linear metre)
    Unit Price
    €5,60 per LM (linear metre)
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    €167,95 EUR ex. GB VAT
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    €5,60 per LM (linear metre)
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  • SIGA Dockskin® 100 Fibrous Surface Primer - 1kg bottle
    DOCKSKIN® by SIGA

    Translation missing: en.products.product.sku:SIG/DS100-1

    SIGA Dockskin® 100 Fibrous Surface Primer - 1kg bottle

    Regular price
    €29,95 EUR ex. GB VAT
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    €29,95 EUR ex. GB VAT
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  • SIGA Fentrim® 2 50/85 (Pre-folded External Corner Tape) - 25m
    FENTRIM® 2 by SIGA

    Translation missing: en.products.product.sku:SIG/F2-5085

    SIGA Fentrim® 2 50/85 (Pre-folded External Corner Tape) - 25m

    Regular price
    €90,95 EUR ex. GB VAT
    Unit Price
    €3,63 per LM (linear metre)
    Unit Price
    €3,03 per LM (linear metre)
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    €90,95 EUR ex. GB VAT
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  • SIGA Majcoat® 350 Diffusion-open Breathable Roof Membrane
    New
    MAJCOAT® 350 by SIGA

    Translation missing: en.products.product.sku:SIG/MC350-15

    SIGA Majcoat® 350 Diffusion-open Breathable Roof Membrane

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    Add to a quote for our best rate.

  • SIGA Tape Dispenser
    TAPE DISPENSER by SIGA

    Translation missing: en.products.product.sku:SIG/TD

    SIGA Tape Dispenser

    Regular price
    €26,95 EUR ex. GB VAT
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    €26,95 EUR ex. GB VAT
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    you save €-26,95
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    €0,00 you save €-22,46
  • Pro Clima Contega Solido EXO-D100 (External Double-sIded Corner Adhesive Tape) - 30m x 100mm
    CONTEGA SOLIDO EXO-D by Pro Clima

    Translation missing: en.products.product.sku:PC/SOLEXOD100

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

    Regular price
    €79,95 EUR ex. GB VAT
    Unit Price
    €2,66 per LM (linear metre)
    Unit Price
    €2,22 per LM (linear metre)
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    €79,95 EUR ex. GB VAT
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    €2,66 per LM (linear metre)
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    Unit Price
    €2,22 per LM (linear metre)
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  • SIGA Primur Roll (Flexible Membrane Seal)
    PRIMUR by SIGA

    Translation missing: en.products.product.sku:SIG/P12

    SIGA Primur Roll (Flexible Membrane Seal)

    Regular price
    €20,95 EUR ex. GB VAT
    Unit Price
    €2,61 per LM (linear metre)
    Unit Price
    €2,18 per LM (linear metre)
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    €20,95 EUR ex. GB VAT
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    €2,61 per LM (linear metre)
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  • SIGA Fentrim® 20 (Pre-folded Internal Corner Tape) - All sizes
    FENTRIM® 20 by SIGA

    Translation missing: en.products.product.sku:SIG/F20-100

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

    Regular price
    From €64,95 EUR ex. GB VAT
    Unit Price
    €2,59 per LM (linear metre)
    Unit Price
    €2,17 per LM (linear metre)
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    €2,17 per LM (linear metre)
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  • SIGA Majvest® 500 SA - Self-Adhesive Facade Membrane (1.52m x 30.5m)
    MAJVEST® 500 SA by SIGA

    Translation missing: en.products.product.sku:SIG/MV500S-60

    SIGA Majvest® 500 SA - Self-Adhesive Facade Membrane (1.52m x 30.5m)

    Regular price
    €588,95 EUR ex. GB VAT
    Unit Price
    €12,71 per m²
    Unit Price
    €10,59 per m²
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    €588,95 EUR ex. GB VAT
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    €10,59 per m²
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    €0,00 you save €-490,79
  • SIGA Wetguard® 200 SA - 780mm x 50m
    WETGUARD® by SIGA

    Translation missing: en.products.product.sku:SIG/WG200S-78

    SIGA Wetguard® 200 SA - 780mm x 50m

    Regular price
    €390,95 EUR ex. GB VAT
    Unit Price
    €10,02 per m²
    Unit Price
    €8,35 per m²
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    €390,95 EUR ex. GB VAT
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    €10,02 per m²
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    €8,35 per m²
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  • SIGA Sicrall® 170 VCL and Jointing Airtight Tape
    SICRALL® by SIGA

    Translation missing: en.products.product.sku:SIG/S170

    SIGA Sicrall® 170 VCL and Jointing Airtight Tape

    Regular price
    €115,95 EUR ex. GB VAT
    Unit Price
    €2,89 per LM (linear metre)
    Unit Price
    €2,42 per LM (linear metre)
    Sale price
    €115,95 EUR ex. GB VAT
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    €2,89 per LM (linear metre)
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    you save €-115,95
    Unit Price
    €2,42 per LM (linear metre)
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    €0,00 you save €-96,63
  • SIGA Dockskin® 100 Fibrous Surface Primer - 4kg tub
    DOCKSKIN® by SIGA

    Translation missing: en.products.product.sku:SIG/DS100-4

    SIGA Dockskin® 100 Fibrous Surface Primer - 4kg tub

    Regular price
    €101,95 EUR ex. GB VAT
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    €101,95 EUR ex. GB VAT
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    you save €-101,95
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    €0,00 you save €-84,96
  • Siga Knife & Ruler Set
    by SIGA

    Translation missing: en.products.product.sku:SIG/KNIRUL

    Siga Knife & Ruler Set

    Regular price
    €25,95 EUR ex. GB VAT
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    €25,95 EUR ex. GB VAT
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    €0,00 you save €-21,63
  • SIGA Majcoat® 150 SOB Breather Membrane - 1.5m x 50m
    MAJCOAT® 150 by SIGA

    Translation missing: en.products.product.sku:SIG/MC150S

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

    Regular price
    €245,95 EUR ex. GB VAT
    Unit Price
    €3,27 per m²
    Unit Price
    €2,73 per m²
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    €245,95 EUR ex. GB VAT
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    €3,27 per m²
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    €2,73 per m²
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  • SIGA Primur® Tubular Bag Bonding Adhesive (600ml)
    PRIMUR® by SIGA

    Translation missing: en.products.product.sku:SIG/PTB

    SIGA Primur® Tubular Bag Bonding Adhesive (600ml)

    Regular price
    €23,95 EUR ex. GB VAT
    Unit Price
    €39,92 per litres
    Unit Price
    €33,26 per litres
    Sale price
    €23,95 EUR ex. GB VAT
    Unit Price
    €39,92 per litres
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    you save €-23,95
    Unit Price
    €33,26 per litres
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    €0,00 you save €-19,96
  • SIGA Majpell® 25 Vapour Control Layer - 1.5m x 50m (75m²)
    MAJPELL® 25 by SIGA

    Translation missing: en.products.product.sku:SIG/MP25-15

    SIGA Majpell® 25 Vapour Control Layer - 1.5m x 50m (75m²)

    Regular price
    €229,95 EUR ex. GB VAT
    Unit Price
    €3,06 per m²
    Unit Price
    €2,56 per m²
    Sale price
    €229,95 EUR ex. GB VAT
    Unit Price
    €3,06 per m²
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    you save €-229,95
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    €2,56 per m²
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    €0,00 you save €-191,63