Collection: 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!
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60mm STEICO Therm (wet) - 600mm x 1350mm - per board
THERM WET by Steico60mm STEICO Therm (wet) - 600mm x 1350mm - per board
- Regular price
- £10.85
- Sale price
- £10.85
- Regular price
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£11.93Save £1.08
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Pro Clima Contega Solido SL-D80 (External Double-sIded Corner Adhesive Tape) - 80mm x 30m
CONTEGA SOLIDO SL-D by Pro ClimaPro Clima Contega Solido SL-D80 (External Double-sIded Corner Adhesive Tape) - 80mm x 30m
- Regular price
- £55.33
- Unit Price
- £1.84 per LM (linear metre)
- Sale price
- £55.33
- Unit Price
- £1.84 per LM (linear metre)
- Regular price
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£56.80Save £1.47
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Pro Clima Contega Solido SL150 (Internal Single-sIded Corner Adhesive Tape) - 150mm x 30m
CONTEGA SOLIDO SL by Pro ClimaPro Clima Contega Solido SL150 (Internal Single-sIded Corner Adhesive Tape) - 150mm x 30m
- Regular price
- £74.08
- Unit Price
- £2.46 per LM (linear metre)
- Sale price
- £74.08
- Unit Price
- £2.46 per LM (linear metre)
- Regular price
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£76.10Save £2.02
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SIGA Fentrim® grommet (Black) - External Airtight Cable & Pipe Sealing
FENTRIM® GROMMET by SIGASIGA Fentrim® grommet (Black) - External Airtight Cable & Pipe Sealing
- Regular price
- From £3.58
- Sale price
- From £3.58
- Regular price
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SIGA Majvest® 700 SOB - Open Facade Membrane (1.5m x 33.4m)
MAJVEST® 700 SOB by SIGASIGA Majvest® 700 SOB - Open Facade Membrane (1.5m x 33.4m)
- Regular price
- £272.63
- Unit Price
- £5.44 per m²
- Sale price
- £272.63
- Unit Price
- £5.44 per m²
- Regular price
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60mm STEICOduo Dry - 600mm x 2230mm
DUO DRY by Steico60mm STEICOduo Dry - 600mm x 2230mm
- Regular price
- £26.26
- Unit Price
- £19.63 per m²
- Sale price
- £26.26
- Unit Price
- £19.63 per m²
- Regular price
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£28.88Save £2.62
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100mm Thermafleece Supasoft Insulation (2 x 590mm rolls) - 5.90m²
SUPASOFT by Thermafleece100mm Thermafleece Supasoft Insulation (2 x 590mm rolls) - 5.90m²
£ Looking for a price?
Add to a quote for our best rate.
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SIGA Fentrim® IS 20 (Pre-folded Internal Corner Tape) - All sizes
FENTRIM® IS 20 by SIGASIGA Fentrim® IS 20 (Pre-folded Internal Corner Tape) - All sizes
- Regular price
- From £45.04
- Unit Price
- £1.80 per LM (linear metre)
- Sale price
- From £45.04
- Unit Price
- £1.80 per LM (linear metre)
- Regular price
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SIGA Fentrim® grommet (White) - Internal Airtight Cable & Pipe Sealing
FENTRIM® GROMMET by SIGASIGA Fentrim® grommet (White) - Internal Airtight Cable & Pipe Sealing
- Regular price
- From £3.58
- Sale price
- From £3.58
- Regular price
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SIGA Majvest® 200 - Breather Membrane (Particularly for Closed Facade)
MAJVEST® 200 by SIGASIGA Majvest® 200 - Breather Membrane (Particularly for Closed Facade)
- Regular price
- £162.88
- Unit Price
- £2.17 per m²
- Sale price
- £162.88
- Unit Price
- £2.17 per m²
- Regular price
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120mm STEICO Special Dry 600mm x 1880mm - per board
SPECIAL DRY by Steico120mm STEICO Special Dry 600mm x 1880mm - per board
- Regular price
- £39.03
- Unit Price
- £36.58 per m²
- Sale price
- £39.03
- Unit Price
- £36.58 per m²
- Regular price
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£43.37Save £4.34
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SIGA Corvum® 12/48 Pre-folded Corner Adhesive Tape (60mm x 25m)
CORVUM® by SIGASIGA Corvum® 12/48 Pre-folded Corner Adhesive Tape (60mm x 25m)
- Regular price
- £41.04
- Unit Price
- £1.64 per LM (linear metre)
- Sale price
- £41.04
- Unit Price
- £1.64 per LM (linear metre)
- Regular price
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25mm Thermafleece CosyWool Sheep Wool (1 x 370mm roll)
COSYWOOL by Thermafleece25mm Thermafleece CosyWool Sheep Wool (1 x 370mm roll)
- Regular price
- £18.75
- Unit Price
- £4.22 per m²
- Sale price
- £18.75
- Unit Price
- £4.22 per m²
- Regular price
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£18.75Save £0.00
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80mm STEICO Therm (wet) - 600mm x 1350mm - per board
THERM WET by Steico80mm STEICO Therm (wet) - 600mm x 1350mm - per board
- Regular price
- £15.49
- Sale price
- £15.49
- Regular price
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£17.22Save £1.73
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SIGA Corvum® 30/30 - Pre-folded Corner Adhesive Tape (60mm x 25m)
CORVUM® by SIGASIGA Corvum® 30/30 - Pre-folded Corner Adhesive Tape (60mm x 25m)
- Regular price
- £41.04
- Unit Price
- £1.64 per LM (linear metre)
- Sale price
- £41.04
- Unit Price
- £1.64 per LM (linear metre)
- Regular price
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100mm STEICO Therm (wet)- 600mm x 1350mm - per board
THERM WET by Steico100mm STEICO Therm (wet)- 600mm x 1350mm - per board
- Regular price
- £18.11
- Sale price
- £18.11
- Regular price
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£20.12Save £2.01
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5mm PROCTOR Spacetherm® A1 Fire Rated Silica Aerogel Blanket - 2400mm x 1200mm (2.88m²)
SPACETHERM® by A. Proctor Group5mm PROCTOR Spacetherm® A1 Fire Rated Silica Aerogel Blanket - 2400mm x 1200mm (2.88m²)
- Regular price
- £178.83
- Unit Price
- £62.09 per m²
- Sale price
- £178.83
- Unit Price
- £62.09 per m²
- Regular price
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25mm Thermafleece CosyWool Sheep Wool (1 x 570mm roll)
COSYWOOL by Thermafleece
25mm Thermafleece CosyWool Sheep Wool (1 x 570mm roll)
- Regular price
- £28.88
- Unit Price
- £4.22 per m²
- Sale price
- £28.88
- Unit Price
- £4.22 per m²
- Regular price
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£28.88Save £0.00
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SIGA Fentrim® 20 50/85 (Pre-folded Internal Corner Tape) - 25m
FENTRIM® 20 by SIGASIGA Fentrim® 20 50/85 (Pre-folded Internal Corner Tape) - 25m
- Regular price
- £72.83
- Unit Price
- £2.91 per LM (linear metre)
- Sale price
- £72.83
- Unit Price
- £2.91 per LM (linear metre)
- Regular price
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PROCTOR Spacetherm® Cold Bridge Strip
SPACETHERM® by A. Proctor GroupPROCTOR Spacetherm® Cold Bridge Strip
£ Looking for a price?
Add to a quote for our best rate.
