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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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.
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Pro Clima Contega Solido SL-D100 (External Double-sIded Corner Adhesive Tape) - 100mm x 30m
CONTEGA SOLIDO SL-D by Pro ClimaPro Clima Contega Solido SL-D100 (External Double-sIded Corner Adhesive Tape) - 100mm x 30m
- Regular price
- £66.17
- Unit Price
- £2.20 per LM (linear metre)
- Sale price
- £66.17
- Unit Price
- £2.20 per LM (linear metre)
- Regular price
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£68.00Save £1.83
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SIGA Meltell® 320 Black Hybrid Sealant (310ml cartridge)
MELTELL® by SIGASIGA Meltell® 320 Black Hybrid Sealant (310ml cartridge)
- Regular price
- £7.46
- Unit Price
- £24.06 per litres
- Sale price
- £7.46
- Unit Price
- £24.06 per litres
- Regular price
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SIGA Fentrim® IS 2 (Pre-folded External Corner Tape)
FENTRIM® IS 20 by SIGASIGA Fentrim® IS 2 (Pre-folded External Corner Tape)
- Regular price
- From £47.33
- Unit Price
- £1.89 per LM (linear metre)
- Sale price
- From £47.33
- Unit Price
- £1.89 per LM (linear metre)
- Regular price
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Pro Clima Contega Solido SL200 (Internal Single-sIded Corner Adhesive Tape) - 200mm x 30m
CONTEGA SOLIDO SL by Pro ClimaPro Clima Contega Solido SL200 (Internal Single-sIded Corner Adhesive Tape) - 200mm x 30m
- Regular price
- £99.58
- Sale price
- £99.58
- Regular price
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£102.30Save £2.72
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100mm STEICO Flex 036 - 575mm x 1190mm - PALLET OF 10
FLEX by Steico100mm STEICO Flex 036 - 575mm x 1190mm - PALLET OF 10
- Regular price
- £348.75
- Unit Price
- £12.45 per m²
- Sale price
- £348.75
- Unit Price
- £12.45 per m²
- Regular price
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£387.50Save £38.75
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100mm Thermafleece CosyWool Sheep Wool Slab (390mm wide) (OLD SIZE)
COSYWOOL SLAB by Thermafleece100mm Thermafleece CosyWool Sheep Wool Slab (390mm wide) (OLD SIZE)
£ Looking for a price?
Add to a quote for our best rate.
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SIGA Majcoat® 150 Breather Membrane - 1.5m x 50m (75m²)
MAJCOAT® 150 by SIGASIGA Majcoat® 150 Breather Membrane - 1.5m x 50m (75m²)
- Regular price
- £184.08
- Unit Price
- £2.45 per m²
- Sale price
- £184.08
- Unit Price
- £2.45 per m²
- Regular price
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80mm STEICO Therm (wet) - 600mm x 1350mm (Pallet of 28)
THERM WET by Steico80mm STEICO Therm (wet) - 600mm x 1350mm (Pallet of 28)
£ Looking for a price?
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50mm Thermafleece Supasoft Roll (3 x 390mm rolls)
SUPASOFT by Thermafleece50mm Thermafleece Supasoft Roll (3 x 390mm rolls)
- Regular price
- £48.67
- Unit Price
- £8.25 per m²
- Sale price
- £48.67
- Unit Price
- £8.25 per m²
- Regular price
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50mm Thermafleece Supasoft Roll (2 x 590mm rolls)
SUPASOFT by Thermafleece50mm Thermafleece Supasoft Roll (2 x 590mm rolls)
- Regular price
- £48.67
- Unit Price
- £4.12 per m²
- Sale price
- £48.67
- Unit Price
- £4.12 per m²
- Regular price
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50mm Thermafleece CosyWool Sheep Wool Slab (390mm wide) (OLD SIZE)
COSYWOOL SLAB by Thermafleece50mm Thermafleece CosyWool Sheep Wool Slab (390mm wide) (OLD SIZE)
£ Looking for a price?
Add to a quote for our best rate.
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SIGA Primur® Cartridge Bonding Adhesive (310ml)
PRIMUR® by SIGASIGA Primur® Cartridge Bonding Adhesive (310ml)
- Regular price
- £10.63
- Unit Price
- £34.29 per litres
- Sale price
- £10.63
- Unit Price
- £34.29 per litres
- Regular price
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Lime Green Solo Onecoat Lime Plaster - 25kg
SOLO ONECOAT by Lime GreenLime Green Solo Onecoat Lime Plaster - 25kg
£ Looking for a price?
Add to a quote for our best rate.
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50mm Thermafleece UltraWool Slab (590mm wide)
ULTRAWOOL by Thermafleece50mm Thermafleece UltraWool Slab (590mm wide)
- Regular price
- £171.85
- Unit Price
- £12.14 per m²
- Sale price
- £171.85
- Unit Price
- £12.14 per m²
- Regular price
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100mm Thermafleece Supasoft Roll (3 x 390mm rolls) - 5.90m²
SUPASOFT by Thermafleece100mm Thermafleece Supasoft Roll (3 x 390mm rolls) - 5.90m²
- Regular price
- £48.67
- Unit Price
- £8.25 per m²
- Sale price
- £48.67
- Unit Price
- £8.25 per m²
- Regular price
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100mm Thermafleece NatraHemp Slab (370mm wide)
NATRAHEMP by Thermafleece100mm Thermafleece NatraHemp Slab (370mm wide)
£ Looking for a price?
Add to a quote for our best rate.
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100mm Thermafleece CosyWool Sheep Wool Slab (590mm wide) (OLD SIZE)
COSYWOOL SLAB by Thermafleece100mm Thermafleece CosyWool Sheep Wool Slab (590mm wide) (OLD SIZE)
£ Looking for a price?
Add to a quote for our best rate.
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SIGA Fentrim® 2 (Pre-folded External Corner Tape) - All sizes
FENTRIM® 2 by SIGASIGA Fentrim® 2 (Pre-folded External Corner Tape) - All sizes
- Regular price
- From £57.79
- Unit Price
- £2.31 per LM (linear metre)
- Sale price
- From £57.79
- Unit Price
- £2.31 per LM (linear metre)
- Regular price
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120mm STEICO Protect M Dry - 1325mm x 600mm
PROTECT M DRY by Steico120mm STEICO Protect M Dry - 1325mm x 600mm
- Regular price
- £29.03
- Unit Price
- £38.86 per m²
- Sale price
- £29.03
- Unit Price
- £38.86 per m²
- Regular price
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£32.26Save £3.23
