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

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

    £60.45 per item
    £2.41 per LM (linear metre)
    inc. VAT
    £50.38 per item
    £2.02 per LM (linear metre)
    ex. VAT
    Save £-60.45
    £60.45 per item
    £2.41 per LM (linear metre)
    inc. VAT
    £0.00 Save £-50.38
    £50.38 per item
    £2.02 per LM (linear metre)
    ex. VAT
  • SIGA Trestard® 420 black FR (Fire Rated Tape) - All Sizes | Insulation Merchant
    Fire Rated
    TRESTARD® by SIGA

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

    From £138.35 per item
    £5.53 per LM (linear metre)
    inc. VAT
    From £115.29 per item
    £4.61 per LM (linear metre)
    ex. VAT
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    From £138.35 per item
    £5.53 per LM (linear metre)
    inc. VAT
    £0.00 Save £-115.29
    From £115.29 per item
    £4.61 per LM (linear metre)
    ex. VAT
  • Pro Clima Extoseal Encors - 300mm x 20m | Insulation Merchant
    EXTOSEAL by Pro Clima

    Pro Clima Extoseal Encors - 300mm x 20m

    £303.10 per item
    £15.15 per LM (linear metre)
    inc. VAT
    £252.58 per item
    £12.63 per LM (linear metre)
    ex. VAT
    Save £-303.10
    £303.10 per item
    £15.15 per LM (linear metre)
    inc. VAT
    £0.00 Save £-252.58
    £252.58 per item
    £12.63 per LM (linear metre)
    ex. VAT
  • Pro Clima Roflex 250 - Airtight Pipe Grommet (Pack of 2) | Insulation Merchant
    ROFLEX by Pro Clima

    Pro Clima Roflex 250 - Airtight Pipe Grommet (Pack of 2)

    £35.53 per item
    £17.76 per ea
    inc. VAT
    £29.61 per item
    £14.80 per ea
    ex. VAT
    £0.00 Save £-35.53
    £35.53 per item
    £17.76 per ea
    inc. VAT
    £0.00 Save £-29.61
    £29.61 per item
    £14.80 per ea
    ex. VAT
  • Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 10-18mm - Roll 20mm x 2.6m | Insulation Merchant
    CONTEGA by Pro Clima

    Pro Clima Contega Fiden Exo (Expansion Joint Tape) - Joint 8-15mm - Roll 20mm x 3.3m

    £8.98 per item
    inc. VAT
    £7.48 per item
    ex. VAT
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    £8.98 per item
    inc. VAT
    £0.00 Save £-7.48
    £7.48 per item
    ex. VAT
  • ROTHOBLAAS Double Band (Double-sided Tape) (40mm x 50m)
    Internal Use
    DOUBLE BAND by Rothoblaas

    ROTHOBLAAS Double Band (Double-sided Tape) (40mm x 50m)

    £21.26 per item
    £0.42 per LM (linear metre)
    inc. VAT
    £17.72 per item
    £0.35 per LM (linear metre)
    ex. VAT
    Save £-21.26
    £21.26 per item
    £0.42 per LM (linear metre)
    inc. VAT
    £0.00 Save £-17.72
    £17.72 per item
    £0.35 per LM (linear metre)
    ex. VAT
  • Pro Clima Contega Solido EXO-D100 (External Double-sIded Corner Adhesive Tape) - 30m x 100mm | Insulation Merchant
    CONTEGA by Pro Clima

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

    £86.92 per item
    £2.89 per LM (linear metre)
    inc. VAT
    £72.43 per item
    £2.41 per LM (linear metre)
    ex. VAT
    Save £-86.92
    £86.92 per item
    £2.89 per LM (linear metre)
    inc. VAT
    £0.00 Save £-72.43
    £72.43 per item
    £2.41 per LM (linear metre)
    ex. VAT
  • SIGA | Insulation Merchant
    External Use
    FENTRIM® by SIGA

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

    From £69.35 per item
    £2.77 per LM (linear metre)
    inc. VAT
    From £57.79 per item
    £2.31 per LM (linear metre)
    ex. VAT
    Save £-69.35
    From £69.35 per item
    £2.77 per LM (linear metre)
    inc. VAT
    £0.00 Save £-57.79
    From £57.79 per item
    £2.31 per LM (linear metre)
    ex. VAT
  • SIGA Farmer Waterproof High Performance Multi-purpose Tape - 60mm x 15m | Insulation Merchant
    FARMER by SIGA

    SIGA Farmer Waterproof High Performance Multi-purpose Tape - 60mm x 15m

    £21.90 per item
    £1.46 per LM (linear metre)
    inc. VAT
    £18.25 per item
    £1.22 per LM (linear metre)
    ex. VAT
    Save £-21.90
    £21.90 per item
    £1.46 per LM (linear metre)
    inc. VAT
    £0.00 Save £-18.25
    £18.25 per item
    £1.22 per LM (linear metre)
    ex. VAT
  • Pro Clima Stoppa - 20mm (20 per pack) | Insulation Merchant
    STOPPA by Pro Clima

    Pro Clima Stoppa - 20mm (20 per pack)

    £19.80 per item
    £0.99 per ea
    inc. VAT
    £16.50 per item
    £0.83 per ea
    ex. VAT
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    £19.80 per item
    £0.99 per ea
    inc. VAT
    £0.00 Save £-16.50
    £16.50 per item
    £0.83 per ea
    ex. VAT
  • ROTHOBLAAS Traspir 150 (Breather Membrane) [BBA]
    External Use
    TRASPIR by Rothoblaas

    ROTHOBLAAS Traspir 150 (Breather Membrane) [BBA]

    From £1.00 per item
    £0.01 per m²
    inc. VAT
    From £0.83 per item
    £0.01 per m²
    ex. VAT
    Save £-1.00
    From £1.00 per item
    £0.01 per m²
    inc. VAT
    £0.00 Save £-0.83
    From £0.83 per item
    £0.01 per m²
    ex. VAT
  • ROTHOBLAAS Facade Band UV Airtightness Tape
    External Use
    FLEXI BAND by Rothoblaas

    ROTHOBLAAS Facade Band UV Airtightness Tape

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  • Pro Clima Contega Solido EXO100 (External Single-sIded Corner Adhesive Tape) - 30m x 100mm | Insulation Merchant
    CONTEGA by Pro Clima

    Pro Clima Contega Solido EXO200 (External Single-sided Corner Adhesive Tape) - 30m x 200mm

    £130.67 per item
    inc. VAT
    £108.89 per item
    ex. VAT
    Save £-130.67
    £130.67 per item
    inc. VAT
    £0.00 Save £-108.89
    £108.89 per item
    ex. VAT
  • ROTHOBLAAS Universal Primer - 1kg
    PRIMER by Rothoblaas

    ROTHOBLAAS Universal Primer - 1kg

    £23.41 per item
    inc. VAT
    £19.51 per item
    ex. VAT
    Save £-23.41
    £23.41 per item
    inc. VAT
    £0.00 Save £-19.51
    £19.51 per item
    ex. VAT
  • Pro Clima Aerosanna Fleece | Insulation Merchant
    AEROSANA by Pro Clima

    Pro Clima Aerosanna Fleece

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  • SIGA Wigluv® 150 External Adhesive Tape - (150mm x 25m) | Insulation Merchant
    WIGLUV® by SIGA

    SIGA Wigluv® 150 External Adhesive Tape - (150mm x 25m)

    £84.80 per item
    £3.39 per LM (linear metre)
    inc. VAT
    £70.67 per item
    £2.83 per LM (linear metre)
    ex. VAT
    Save £-84.80
    £84.80 per item
    £3.39 per LM (linear metre)
    inc. VAT
    £0.00 Save £-70.67
    £70.67 per item
    £2.83 per LM (linear metre)
    ex. VAT
  • SIGA Primur Roll (Flexible Membrane Seal) | Insulation Merchant
    PRIMUR® by SIGA

    SIGA Primur Roll (Flexible Membrane Seal)

    £21.00 per item
    £2.62 per LM (linear metre)
    inc. VAT
    £17.50 per item
    £2.19 per LM (linear metre)
    ex. VAT
    Save £-21.00
    £21.00 per item
    £2.62 per LM (linear metre)
    inc. VAT
    £0.00 Save £-17.50
    £17.50 per item
    £2.19 per LM (linear metre)
    ex. VAT
  • SIGA Wetguard® 200 SA - 390mm x 50m | Insulation Merchant
    WETGUARD® by SIGA

    SIGA Wetguard® 200 SA - 390mm x 50m

    £202.70 per item
    £10.39 per m²
    inc. VAT
    £168.92 per item
    £8.66 per m²
    ex. VAT
    Save £-202.70
    £202.70 per item
    £10.39 per m²
    inc. VAT
    £0.00 Save £-168.92
    £168.92 per item
    £8.66 per m²
    ex. VAT
  • SIGA Wetguard® 200 SA - 1560mm x 50m | Insulation Merchant
    WETGUARD® by SIGA

    SIGA Wetguard® 200 SA - 1560mm x 50m

    £764.35 per item
    £9.79 per m²
    inc. VAT
    £636.96 per item
    £8.17 per m²
    ex. VAT
    Save £-764.35
    £764.35 per item
    £9.79 per m²
    inc. VAT
    £0.00 Save £-636.96
    £636.96 per item
    £8.17 per m²
    ex. VAT
  • SIGA Fentrim® 330 Grey Adhesive Tape - 150mm | Insulation Merchant
    FENTRIM® by SIGA

    SIGA Fentrim® 330 Grey Adhesive Tape - 150mm

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