Retrofit

Our expertise lies in providing advanced Retrofit solutions for both internal and external wall insulation, ensuring your home stays cosy while saving you money on energy bills.

With our wide range of wood fibre insulation, you can rely on year-round comfort. It keeps your house warm during chilly winters and pleasantly cool throughout the summer months.

Choose Insulation Merchant for a more comfortable, energy-efficient home that you'll love living in!

Retrofit Insulation | Insulation Merchant
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  • 60mm STEICO Therm (wet) - 600mm x 1350mm - per board | Insulation Merchant 60mm STEICO Therm (wet) - 600mm x 1350mm - per board | Insulation Merchant
    Spring Savings
    THERM WET by Steico

    60mm STEICO Therm (wet) - 600mm x 1350mm - per board

    €13,95 EUR ex. GB VAT
    €13,95 EUR ex. GB VAT
    Save €-13,95
  • Pro Clima Contega Solido SL-D80 (External Double-sIded Corner Adhesive Tape) - 80mm x 30m | Insulation Merchant Pro Clima Contega Solido SL-D80 (External Double-sIded Corner Adhesive Tape) - 80mm x 30m | Insulation Merchant
    CONTEGA SOLIDO SL-D by Pro Clima

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

    €66,95 EUR ex. GB VAT
    €2,23 per LM (linear metre)
    €66,95 EUR ex. GB VAT
    €2,23 per LM (linear metre)
    Save €-66,95
  • Pro Clima Contega Solido SL150 (Internal Single-sIded Corner Adhesive Tape) - 150mm x 30m | Insulation Merchant Pro Clima Contega Solido SL150 (Internal Single-sIded Corner Adhesive Tape) - 150mm x 30m | Insulation Merchant
    CONTEGA SOLIDO SL by Pro Clima

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

    €88,95 EUR ex. GB VAT
    €2,96 per LM (linear metre)
    €88,95 EUR ex. GB VAT
    €2,96 per LM (linear metre)
    Save €-88,95
  • SIGA Fentrim® grommet (Black) - External Airtight Cable & Pipe Sealing | Insulation Merchant SIGA Fentrim® grommet (Black) - External Airtight Cable & Pipe Sealing | Insulation Merchant
    Spring Savings
    FENTRIM® GROMMET by SIGA

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

    From €4,95 EUR ex. GB VAT
    From €4,95 EUR ex. GB VAT
    Save €-4,95
  • SIGA Majvest® 700 SOB - Open Facade Membrane (1.5m x 33.4m) | Insulation Merchant SIGA Majvest® 700 SOB - Open Facade Membrane (1.5m x 33.4m) | Insulation Merchant
    Spring Savings
    MAJVEST® 700 SOB by SIGA

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

    €326,95 EUR ex. GB VAT
    €6,53 per m²
    €326,95 EUR ex. GB VAT
    €6,53 per m²
    Save €-326,95
  • 60mm STEICOduo Dry - 600mm x 2230mm | Insulation Merchant
    Spring Savings
    DUO DRY by Steico

    60mm STEICOduo Dry - 600mm x 2230mm

    €31,95 EUR ex. GB VAT
    €23,88 per m²
    €31,95 EUR ex. GB VAT
    €23,88 per m²
    Save €-31,95
  • 100mm Thermafleece Supasoft Insulation (2 x 590mm rolls) - 5.90m² | Insulation Merchant 100mm Thermafleece Supasoft Insulation (2 x 590mm rolls) - 5.90m² | Insulation Merchant

    5.0

    SUPASOFT by Thermafleece

    100mm Thermafleece Supasoft Insulation (2 x 590mm rolls) - 5.90m²

    € Looking for a price?

    Add to a quote for our best rate.

  • SIGA Fentrim® IS 20 (Pre-folded Internal Corner Tape) - All sizes | Insulation Merchant SIGA Fentrim® IS 20 (Pre-folded Internal Corner Tape) - All sizes | Insulation Merchant
    Spring Savings
    Internal Use
    FENTRIM® IS 20 by SIGA

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

    From €54,95 EUR ex. GB VAT
    €2,19 per LM (linear metre)
    From €54,95 EUR ex. GB VAT
    €2,19 per LM (linear metre)
    Save €-54,95
  • SIGA Fentrim® grommet (White) - Internal Airtight Cable & Pipe Sealing | Insulation Merchant SIGA Fentrim® grommet (White) - Internal Airtight Cable & Pipe Sealing | Insulation Merchant
    Spring Savings
    FENTRIM® GROMMET by SIGA

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

    From €4,95 EUR ex. GB VAT
    From €4,95 EUR ex. GB VAT
    Save €-4,95
  • SIGA Majvest® 200 - Breather Membrane (Particularly for Closed Facade) | Insulation Merchant SIGA Majvest® 200 - Breather Membrane (Particularly for Closed Facade) | Insulation Merchant
    Spring Savings
    MAJVEST® 200 by SIGA

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

    €195,95 EUR ex. GB VAT
    €2,61 per m²
    €195,95 EUR ex. GB VAT
    €2,61 per m²
    Save €-195,95
  • 120mm STEICO Special Dry 600mm x 1880mm - per board | Insulation Merchant 120mm STEICO Special Dry 600mm x 1880mm - per board | Insulation Merchant
    Spring Savings
    SPECIAL DRY by Steico

    120mm STEICO Special Dry 600mm x 1880mm - per board

    €46,95 EUR ex. GB VAT
    €44,00 per m²
    €46,95 EUR ex. GB VAT
    €44,00 per m²
    Save €-46,95
  • SIGA Corvum® 12/48 Pre-folded Corner Adhesive Tape (60mm x 25m) | Insulation Merchant SIGA Corvum® 12/48 Pre-folded Corner Adhesive Tape (60mm x 25m) | Insulation Merchant
    Spring Savings
    CORVUM® by SIGA

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

    €49,95 EUR ex. GB VAT
    €1,99 per LM (linear metre)
    €49,95 EUR ex. GB VAT
    €1,99 per LM (linear metre)
    Save €-49,95
  • 100mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant
    COSYWOOL by Thermafleece

    25mm Thermafleece CosyWool Sheep Wool (1 x 370mm roll)

    €22,95 EUR ex. GB VAT
    €5,17 per m²
    €22,95 EUR ex. GB VAT
    €5,17 per m²
    Save €-22,95
  • 80mm STEICO Therm (wet) - 600mm x 1350mm - per board | Insulation Merchant 80mm STEICO Therm (wet) - 600mm x 1350mm - per board | Insulation Merchant
    Spring Savings

    5.0

    THERM WET by Steico

    80mm STEICO Therm (wet) - 600mm x 1350mm - per board

    €18,95 EUR ex. GB VAT
    €18,95 EUR ex. GB VAT
    Save €-18,95
  • SIGA Corvum® 30/30 - Pre-folded Corner Adhesive Tape (60mm x 25m) | Insulation Merchant SIGA Corvum® 30/30 - Pre-folded Corner Adhesive Tape (60mm x 25m) | Insulation Merchant
    Spring Savings
    CORVUM® by SIGA

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

    €49,95 EUR ex. GB VAT
    €1,99 per LM (linear metre)
    €49,95 EUR ex. GB VAT
    €1,99 per LM (linear metre)
    Save €-49,95
  • 100mm STEICO Therm (wet)- 600mm x 1350mm - per board | Insulation Merchant 100mm STEICO Therm (wet)- 600mm x 1350mm - per board | Insulation Merchant
    Spring Savings
    THERM WET by Steico

    100mm STEICO Therm (wet)- 600mm x 1350mm - per board

    €21,95 EUR ex. GB VAT
    €21,95 EUR ex. GB VAT
    Save €-21,95
  • 5mm PROCTOR Spacetherm® A1 Fire Rated Silica Aerogel Blanket - 2400mm x 1200mm (2.88m²) | Insulation Merchant
    SPACETHERM® by A. Proctor Group

    5mm PROCTOR Spacetherm® A1 Fire Rated Silica Aerogel Blanket - 2400mm x 1200mm (2.88m²)

    €214,95 EUR ex. GB VAT
    €74,64 per m²
    €214,95 EUR ex. GB VAT
    €74,64 per m²
    Save €-214,95
  • 100mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant
    COSYWOOL by Thermafleece

    25mm Thermafleece CosyWool Sheep Wool (1 x 570mm roll)

    €34,95 EUR ex. GB VAT
    €5,11 per m²
    €34,95 EUR ex. GB VAT
    €5,11 per m²
    Save €-34,95
  • SIGA Fentrim® 20 50/85 (Pre-folded Internal Corner Tape) - 25m | Insulation Merchant SIGA Fentrim® 20 50/85 (Pre-folded Internal Corner Tape) - 25m | Insulation Merchant
    Spring Savings
    FENTRIM® 20 by SIGA

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

    €87,95 EUR ex. GB VAT
    €3,51 per LM (linear metre)
    €87,95 EUR ex. GB VAT
    €3,51 per LM (linear metre)
    Save €-87,95
  • PROCTOR Spacetherm® Cold Bridge Strip | Insulation Merchant
    SPACETHERM® by A. Proctor Group

    PROCTOR Spacetherm® Cold Bridge Strip

    € Looking for a price?

    Add to a quote for our best rate.