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 Corvum® 30/30 - Pre-folded Corner Adhesive Tape (60mm x 25m)
    CORVUM® by SIGA

    Translation missing: en.products.product.sku:SIG/C3080

    SIGA Corvum® 30/30 - 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
  • SIGA Fentrim® 20 50/85 (Pre-folded Internal Corner Tape) - 25m
    FENTRIM® 20 by SIGA

    Translation missing: en.products.product.sku:SIG/F205085

    SIGA Fentrim® 20 50/85 (Pre-folded Internal Corner Tape) - 25m

    Regular price
    €86,95 EUR ex. GB VAT
    Unit Price
    €3,47 per LM (linear metre)
    Unit Price
    €2,90 per LM (linear metre)
    Sale price
    €86,95 EUR ex. GB VAT
    Unit Price
    €3,47 per LM (linear metre)
    Regular price
    you save €-86,95
    Unit Price
    €2,90 per LM (linear metre)
    Regular price
    €0,00 you save €-72,46
  • Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 3-6mm - Roll 12mm x 8m
    CONTEGA FIDEN EXO by Pro Clima

    Translation missing: en.products.product.sku:PC/F1236

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

    Regular price
    €5,95 EUR ex. GB VAT
    Sale price
    €5,95 EUR ex. GB VAT
    Regular price
    you save €-5,95
    Regular price
    €0,00 you save €-4,96
  • Pro Clima Constivap 2.3 Plus - 1.5m x 50m
    CONSTIVAP by Pro Clima

    Translation missing: en.products.product.sku:PC/CV2350

    Pro Clima Constivap 2.3 Plus - 1.5m x 50m

    Regular price
    €156,95 EUR ex. GB VAT
    Sale price
    €156,95 EUR ex. GB VAT
    Regular price
    you save €-156,95
    Regular price
    €0,00 you save €-130,79
  • Pro Clima Extoseal Encors - 200mm x 20m
    EXTOSEAL by Pro Clima

    Translation missing: en.products.product.sku:PC/ENCORS200

    Pro Clima Extoseal Encors - 200mm x 20m

    Regular price
    €188,95 EUR ex. GB VAT
    Sale price
    €188,95 EUR ex. GB VAT
    Regular price
    you save €-188,95
    Regular price
    €0,00 you save €-157,46
  • Pro Clima Roflex 30 - Airtight Pipe Grommet (Pack of 10)
    ROFLEX by Pro Clima

    Translation missing: en.products.product.sku:PC/R30-10

    Pro Clima Roflex 30 - Airtight Pipe Grommet (Pack of 10)

    Regular price
    €38,95 EUR ex. GB VAT
    Unit Price
    €3,89 per ea
    Unit Price
    €3,25 per ea
    Sale price
    €38,95 EUR ex. GB VAT
    Unit Price
    €3,89 per ea
    Regular price
    you save €-38,95
    Unit Price
    €3,25 per ea
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    €0,00 you save €-32,46
  • 3m Pro Clima Intello Plus - Vapour Check Membrane (50m)
    INTELLO PLUS by Pro Clima

    Translation missing: en.products.product.sku:PC/IP5030

    3m Pro Clima Intello Plus - Vapour Check Membrane (50m)

    Regular price
    €547,95 EUR ex. GB VAT
    Unit Price
    €3,65 per m²
    Unit Price
    €3,04 per m²
    Sale price
    €547,95 EUR ex. GB VAT
    Unit Price
    €3,65 per m²
    Regular price
    you save €-547,95
    Unit Price
    €3,04 per m²
    Regular price
    €0,00 you save €-456,63
  • SIGA Hard Rubber Roller for tape sealing
    by SIGA

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

    SIGA Hard Rubber Roller for tape sealing

    Regular price
    €23,95 EUR ex. GB VAT
    Sale price
    €23,95 EUR ex. GB VAT
    Regular price
    you save €-23,95
    Regular price
    €0,00 you save €-19,96
  • Pro Clima Solitex Plus Connect - Vapour Permeable Membrane + Pre-applied Tape (1.5m x 50m 75m²)
    SOLITEX PLUS by Pro Clima

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

    Pro Clima Solitex Plus Connect - Vapour Permeable Membrane + Pre-applied Tape (1.5m x 50m 75m²)

    Regular price
    €345,95 EUR ex. GB VAT
    Unit Price
    €4,61 per m²
    Unit Price
    €3,84 per m²
    Sale price
    €345,95 EUR ex. GB VAT
    Unit Price
    €4,61 per m²
    Regular price
    you save €-345,95
    Unit Price
    €3,84 per m²
    Regular price
    €0,00 you save €-288,29
  • Pro Clima Roflex 200 - Airtight Pipe Grommet (Pack of 10)
    ROFLEX by Pro Clima

    Translation missing: en.products.product.sku:PC/R200-10

    Pro Clima Roflex 200 - Airtight Pipe Grommet (Pack of 10)

    Regular price
    €83,95 EUR ex. GB VAT
    Unit Price
    €8,39 per ea
    Unit Price
    €7,00 per ea
    Sale price
    €83,95 EUR ex. GB VAT
    Unit Price
    €8,39 per ea
    Regular price
    you save €-83,95
    Unit Price
    €7,00 per ea
    Regular price
    €0,00 you save €-69,96
  • Pro Clima Extoseal Magov Butyl Tape (60mm x 10m)
    EXTOSEAL by Pro Clima

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

    Pro Clima Extoseal Magov Butyl Tape (60mm x 10m)

    Regular price
    €39,95 EUR ex. GB VAT
    Unit Price
    €3,99 per LM (linear metre)
    Unit Price
    €3,33 per LM (linear metre)
    Sale price
    €39,95 EUR ex. GB VAT
    Unit Price
    €3,99 per LM (linear metre)
    Regular price
    you save €-39,95
    Unit Price
    €3,33 per LM (linear metre)
    Regular price
    €0,00 you save €-33,29
  • Pro Clima Tescon Invis - 100mm x 30m
    TESCON by Pro Clima

    Translation missing: en.products.product.sku:PC/TINVIS-100

    Pro Clima Tescon Invis - 100mm x 30m

    Regular price
    €54,95 EUR ex. GB VAT
    Unit Price
    €1,83 per LM (linear metre)
    Unit Price
    €1,53 per LM (linear metre)
    Sale price
    €54,95 EUR ex. GB VAT
    Unit Price
    €1,83 per LM (linear metre)
    Regular price
    you save €-54,95
    Unit Price
    €1,53 per LM (linear metre)
    Regular price
    €0,00 you save €-45,79
  • Pro Clima Contega Solido SL-D100 (External Double-sIded Corner Adhesive Tape) - 100mm x 30m
    CONTEGA SOLIDO SL-D by Pro Clima

    Translation missing: en.products.product.sku:PC/SOLSLD100

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

    Regular price
    €81,95 EUR ex. GB VAT
    Unit Price
    €2,73 per LM (linear metre)
    Unit Price
    €2,28 per LM (linear metre)
    Sale price
    €81,95 EUR ex. GB VAT
    Unit Price
    €2,73 per LM (linear metre)
    Regular price
    you save €-81,95
    Unit Price
    €2,28 per LM (linear metre)
    Regular price
    €0,00 you save €-68,29
  • Pro Clima Roflex 50 - Airtight Pipe Grommet (Pack of 10)
    ROFLEX by Pro Clima

    Translation missing: en.products.product.sku:PC/R50-10

    Pro Clima Roflex 50 - Airtight Pipe Grommet (Pack of 10)

    Regular price
    €41,95 EUR ex. GB VAT
    Unit Price
    €4,19 per ea
    Unit Price
    €3,50 per ea
    Sale price
    €41,95 EUR ex. GB VAT
    Unit Price
    €4,19 per ea
    Regular price
    you save €-41,95
    Unit Price
    €3,50 per ea
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    €0,00 you save €-34,96
  • Pro Clima Tescon Profect 50 (Pre-folded Corner Tape) - 30m x 50mm (12/38mm Split)
    TESCON by Pro Clima

    Translation missing: en.products.product.sku:PC/TP50

    Pro Clima Tescon Profect 50 (Pre-folded Corner Tape) - 30m x 50mm (12/38mm Split)

    Regular price
    €54,95 EUR ex. GB VAT
    Unit Price
    €1,83 per LM (linear metre)
    Unit Price
    €1,53 per LM (linear metre)
    Sale price
    €54,95 EUR ex. GB VAT
    Unit Price
    €1,83 per LM (linear metre)
    Regular price
    you save €-54,95
    Unit Price
    €1,53 per LM (linear metre)
    Regular price
    €0,00 you save €-45,79
  • SIGA Meltell® 320 Black Hybrid Sealant (310ml cartridge)
    MELTELL® by SIGA

    Translation missing: en.products.product.sku:SIG/MT320B-31

    SIGA Meltell® 320 Black Hybrid Sealant (310ml cartridge)

    Regular price
    €8,95 EUR ex. GB VAT
    Unit Price
    €28,87 per litres
    Unit Price
    €24,06 per litres
    Sale price
    €8,95 EUR ex. GB VAT
    Unit Price
    €28,87 per litres
    Regular price
    you save €-8,95
    Unit Price
    €24,06 per litres
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    €0,00 you save €-7,46
  • Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 7-12mm - Roll 15mm x 4.3m
    CONTEGA FIDEN EXO by Pro Clima

    Translation missing: en.products.product.sku:PC/F15712

    Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 7-12mm - Roll 15mm x 4.3m

    Regular price
    €7,95 EUR ex. GB VAT
    Sale price
    €7,95 EUR ex. GB VAT
    Regular price
    you save €-7,95
    Regular price
    €0,00 you save €-6,63
  • SIGA Fentrim® IS 2 (Pre-folded External Corner Tape)
    FENTRIM® IS 20 by SIGA

    Translation missing: en.products.product.sku:SIG/FIS275

    SIGA Fentrim® IS 2 (Pre-folded External Corner Tape)

    Regular price
    From €56,95 EUR ex. GB VAT
    Unit Price
    €2,27 per LM (linear metre)
    Unit Price
    €1,90 per LM (linear metre)
    Sale price
    From €56,95 EUR ex. GB VAT
    Unit Price
    €2,27 per LM (linear metre)
    Regular price
    you save €-56,95
    Unit Price
    €1,90 per LM (linear metre)
    Regular price
    €0,00 you save €-47,46
  • 50mm SIGA Nail Sealing Tape - 30m
    NAIL SEALING by SIGA

    Translation missing: en.products.product.sku:SIG/NST50

    50mm SIGA Nail Sealing Tape - 30m

    Regular price
    €51,95 EUR ex. GB VAT
    Unit Price
    €1,73 per LM (linear metre)
    Unit Price
    €1,44 per LM (linear metre)
    Sale price
    €51,95 EUR ex. GB VAT
    Unit Price
    €1,73 per LM (linear metre)
    Regular price
    you save €-51,95
    Unit Price
    €1,44 per LM (linear metre)
    Regular price
    €0,00 you save €-43,29
  • Pro Clima Contega Solido SL200 (Internal Single-sIded Corner Adhesive Tape) - 200mm x 30m
    CONTEGA SOLIDO SL by Pro Clima

    Translation missing: en.products.product.sku:PC/SOLSL200

    Pro Clima Contega Solido SL200 (Internal Single-sIded Corner Adhesive Tape) - 200mm x 30m

    Regular price
    €122,95 EUR ex. GB VAT
    Sale price
    €122,95 EUR ex. GB VAT
    Regular price
    you save €-122,95
    Regular price
    €0,00 you save €-102,46