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

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Showing 122 of 122 products
  • SIGA Fentrim® grommet (Black) - External Airtight Cable & Pipe Sealing
    FENTRIM® GROMMET by SIGA

    Translation missing: en.products.product.sku:SIG/FGB-812

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

    Regular price
    From €4,95 EUR ex. GB VAT
    Sale price
    From €4,95 EUR ex. GB VAT
    Regular price
    you save €-4,95
    Regular price
    €0,00 you save €-4,13
  • Pro Clima Contega Solido SL150 (Internal Single-sIded Corner Adhesive Tape) - 150mm x 30m
    CONTEGA SOLIDO SL by Pro Clima

    Translation missing: en.products.product.sku:PC/SOLSL150

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

    Regular price
    €90,95 EUR ex. GB VAT
    Unit Price
    €3,03 per LM (linear metre)
    Unit Price
    €2,53 per LM (linear metre)
    Sale price
    €90,95 EUR ex. GB VAT
    Unit Price
    €3,03 per LM (linear metre)
    Regular price
    you save €-90,95
    Unit Price
    €2,53 per LM (linear metre)
    Regular price
    €0,00 you save €-75,79
  • Pro Clima Orcon F - Flexible airtight solid acrylic sealant (600ml)
    ORCON F by Pro Clima

    Translation missing: en.products.product.sku:PC/ORC600

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

    Regular price
    €13,95 EUR ex. GB VAT
    Unit Price
    €0,02 per ml
    Unit Price
    €0,02 per ml
    Sale price
    €13,95 EUR ex. GB VAT
    Unit Price
    €0,02 per ml
    Regular price
    you save €-13,95
    Unit Price
    €0,02 per ml
    Regular price
    €0,00 you save €-11,63
  • Pro Clima Kaflex Duo - Airtight Cable Grommet (Pack of 15)
    KAFLEX by Pro Clima

    Translation missing: en.products.product.sku:PC/KDUO-15

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

    Regular price
    €44,95 EUR ex. GB VAT
    Unit Price
    €2,99 per ea
    Unit Price
    €2,50 per ea
    Sale price
    €44,95 EUR ex. GB VAT
    Unit Price
    €2,99 per ea
    Regular price
    you save €-44,95
    Unit Price
    €2,50 per ea
    Regular price
    €0,00 you save €-37,46
  • 60mm SIGA Wigluv® Black 60 External Adhesive Tape - (40m x 60mm)
    WIGLUV® BLACK 60 by SIGA

    Translation missing: en.products.product.sku:SIG/WLB60

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

    Regular price
    From €66,95 EUR ex. GB VAT
    Unit Price
    €1,67 per LM (linear metre)
    Unit Price
    €1,39 per LM (linear metre)
    Sale price
    From €66,95 EUR ex. GB VAT
    Unit Price
    €1,67 per LM (linear metre)
    Regular price
    you save €-66,95
    Unit Price
    €1,39 per LM (linear metre)
    Regular price
    €0,00 you save €-55,79
  • SIGA Wigluv® 100 External Adhesive Tape - (100mm x 25m)
    WIGLUV® 100 by SIGA

    Translation missing: en.products.product.sku:SIG/WL100

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

    Regular price
    €57,95 EUR ex. GB VAT
    Unit Price
    €2,31 per LM (linear metre)
    Unit Price
    €1,93 per LM (linear metre)
    Sale price
    €57,95 EUR ex. GB VAT
    Unit Price
    €2,31 per LM (linear metre)
    Regular price
    you save €-57,95
    Unit Price
    €1,93 per LM (linear metre)
    Regular price
    €0,00 you save €-48,29
  • SIGA Fentrim® IS 20 (Pre-folded Internal Corner Tape) - All sizes
    FENTRIM® IS 20 by SIGA

    Translation missing: en.products.product.sku:SIG/FIS2075

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

    Regular price
    From €53,95 EUR ex. GB VAT
    Unit Price
    €2,15 per LM (linear metre)
    Unit Price
    €1,80 per LM (linear metre)
    Sale price
    From €53,95 EUR ex. GB VAT
    Unit Price
    €2,15 per LM (linear metre)
    Regular price
    you save €-53,95
    Unit Price
    €1,80 per LM (linear metre)
    Regular price
    €0,00 you save €-44,96
  • SIGA Majvest® 700 SOB - Open Facade Membrane (1.5m x 33.4m)
    MAJVEST® 700 SOB by SIGA

    Translation missing: en.products.product.sku:SIG/MV700S

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

    Regular price
    €334,95 EUR ex. GB VAT
    Unit Price
    €6,69 per m²
    Unit Price
    €5,57 per m²
    Sale price
    €334,95 EUR ex. GB VAT
    Unit Price
    €6,69 per m²
    Regular price
    you save €-334,95
    Unit Price
    €5,57 per m²
    Regular price
    €0,00 you save €-279,13
  • SIGA Rissan® 100 VCL & Jointing Airtightness Tape - 100mm x 25m
    RISSAN® 100 by SIGA

    Translation missing: en.products.product.sku:SIG/R100

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

    Regular price
    €55,95 EUR ex. GB VAT
    Unit Price
    €2,23 per LM (linear metre)
    Unit Price
    €1,87 per LM (linear metre)
    Sale price
    €55,95 EUR ex. GB VAT
    Unit Price
    €2,23 per LM (linear metre)
    Regular price
    you save €-55,95
    Unit Price
    €1,87 per LM (linear metre)
    Regular price
    €0,00 you save €-46,63
  • Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 10-18mm - Roll 20mm x 2.6m
    CONTEGA FIDEN EXO by Pro Clima

    Translation missing: en.products.product.sku:PC/F201018

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

    Regular price
    €8,95 EUR ex. GB VAT
    Sale price
    €8,95 EUR ex. GB VAT
    Regular price
    you save €-8,95
    Regular price
    €0,00 you save €-7,46
  • SIGA Fentrim® grommet (White) - Internal Airtight Cable & Pipe Sealing
    FENTRIM® GROMMET by SIGA

    Translation missing: en.products.product.sku:SIG/FGW-812

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

    Regular price
    From €4,95 EUR ex. GB VAT
    Sale price
    From €4,95 EUR ex. GB VAT
    Regular price
    you save €-4,95
    Regular price
    €0,00 you save €-4,13
  • SIGA Majvest® 200 - Breather Membrane (Particularly for Closed Facade)
    MAJVEST® 200 by SIGA

    Translation missing: en.products.product.sku:SIG/MV200-15

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

    Regular price
    €199,95 EUR ex. GB VAT
    Unit Price
    €2,66 per m²
    Unit Price
    €2,22 per m²
    Sale price
    €199,95 EUR ex. GB VAT
    Unit Price
    €2,66 per m²
    Regular price
    you save €-199,95
    Unit Price
    €2,22 per m²
    Regular price
    €0,00 you save €-166,63
  • Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 5-10mm (Roll 20mm x 5.6m)
    CONTEGA FIDEN EXO by Pro Clima

    Translation missing: en.products.product.sku:PC/F20510

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

    Regular price
    €9,95 EUR ex. GB VAT
    Sale price
    €9,95 EUR ex. GB VAT
    Regular price
    you save €-9,95
    Regular price
    €0,00 you save €-8,29
  • Pro Clima Roflex 100 - Airtight Pipe Grommet (Pack of 10)
    ROFLEX by Pro Clima

    Translation missing: en.products.product.sku:PC/R100-10

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

    Regular price
    €50,95 EUR ex. GB VAT
    Unit Price
    €5,09 per ea
    Unit Price
    €4,25 per ea
    Sale price
    €50,95 EUR ex. GB VAT
    Unit Price
    €5,09 per ea
    Regular price
    you save €-50,95
    Unit Price
    €4,25 per ea
    Regular price
    €0,00 you save €-42,46
  • SIGA Corvum® 12/48 Pre-folded Corner Adhesive Tape (60mm x 25m)
    CORVUM® by SIGA

    Translation missing: en.products.product.sku:SIG/C1248

    SIGA Corvum® 12/48 Pre-folded Corner Adhesive Tape (60mm x 25m)

    Regular price
    €48,95 EUR ex. GB VAT
    Unit Price
    €1,95 per LM (linear metre)
    Unit Price
    €1,63 per LM (linear metre)
    Sale price
    €48,95 EUR ex. GB VAT
    Unit Price
    €1,95 per LM (linear metre)
    Regular price
    you save €-48,95
    Unit Price
    €1,63 per LM (linear metre)
    Regular price
    €0,00 you save €-40,79
  • Pro Clima DB+ - 1.35m x 50m
    DB+ by Pro Clima

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

    Pro Clima DB+ - 1.35m x 50m

    Regular price
    €208,95 EUR ex. GB VAT
    Unit Price
    €3,10 per m²
    Unit Price
    €2,58 per m²
    Sale price
    €208,95 EUR ex. GB VAT
    Unit Price
    €3,10 per m²
    Regular price
    you save €-208,95
    Unit Price
    €2,58 per m²
    Regular price
    €0,00 you save €-174,13
  • Pro Clima Dasatop - 1.5m x 50m (75m²)
    DASATOP by Pro Clima

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

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

    Regular price
    €202,95 EUR ex. GB VAT
    Unit Price
    €2,70 per m²
    Unit Price
    €2,26 per m²
    Sale price
    €202,95 EUR ex. GB VAT
    Unit Price
    €2,70 per m²
    Regular price
    you save €-202,95
    Unit Price
    €2,26 per m²
    Regular price
    €0,00 you save €-169,13
  • Pro Clima Extoseal Encors - 150mm x 20m
    EXTOSEAL by Pro Clima

    Translation missing: en.products.product.sku:PC/ENCORS150

    Pro Clima Extoseal Encors - 150mm x 20m

    Regular price
    €139,95 EUR ex. GB VAT
    Sale price
    €139,95 EUR ex. GB VAT
    Regular price
    you save €-139,95
    Regular price
    €0,00 you save €-116,63
  • Pro Clima Kaflex Multi - Airtight Cable Grommet (Pack of 10)
    KAFLEX by Pro Clima

    Translation missing: en.products.product.sku:PC/KMULTI-10

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

    Regular price
    €107,95 EUR ex. GB VAT
    Unit Price
    €10,79 per ea
    Unit Price
    €9,00 per ea
    Sale price
    €107,95 EUR ex. GB VAT
    Unit Price
    €10,79 per ea
    Regular price
    you save €-107,95
    Unit Price
    €9,00 per ea
    Regular price
    €0,00 you save €-89,96
  • Pro Clima Roflex 150 - Airtight Pipe Grommet (Pack of 10)
    ROFLEX by Pro Clima

    Translation missing: en.products.product.sku:PC/R150-10

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

    Regular price
    €61,95 EUR ex. GB VAT
    Unit Price
    €6,19 per ea
    Unit Price
    €5,16 per ea
    Sale price
    €61,95 EUR ex. GB VAT
    Unit Price
    €6,19 per ea
    Regular price
    you save €-61,95
    Unit Price
    €5,16 per ea
    Regular price
    €0,00 you save €-51,63