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
Clear all filters

Showing 118 of 118 products

Sort by:
Price: 0 – £1,905.11

Filter and sort

Showing 118 of 118 products

Clear
Clear
Clear
Clear
Clear
Clear

Up to £1,905.11

Clear
Clear all filters
Clear all filters
Showing 118 of 118 products
  • Lime Green Silic8 AF1 Aerogel Adhesive & Primer | Insulation Merchant
    SILIC8 by Lime Green

    Lime Green Silic8 AF1 Aerogel Adhesive & Primer

    From £150.00 ex. VAT
    From £180.00 inc. VAT
    From £180.00 inc. VAT
    Save £-180.00
    From £150.00 ex. VAT
    £0.00 Save £-150.00
  • 26mm PROCTOR Spacetherm® Multi Laminate (Aerogel + MgO) - 2400mm x 1200mm | Insulation Merchant
    SPACETHERM® by A. Proctor Group

    PROCTOR Spacetherm® Multi Board-Walls Laminate (Aerogel + MgO) - 2400mm x 1200mm

    £ Looking for a price?

    Add to a quote for our best rate.

  • 50mm Thermafleece NatraHemp Slab (570mm wide) | Insulation Merchant 50mm Thermafleece NatraHemp Slab (570mm wide) | Insulation Merchant

    4.0

    NATRAHEMP by Thermafleece

    50mm Thermafleece NatraHemp Slab (570mm wide)

    £201.58 ex. VAT
    £9.21 per m²
    £241.90 inc. VAT
    £11.05 per m²
    £241.90 inc. VAT
    £11.05 per m²
    Save £-241.90
    £201.58 ex. VAT
    £9.21 per m²
    £0.00 Save £-201.58
  • 140mm Thermafleece CosyWool Sheep Wool Slab (390mm wide) (OLD SIZE) | Insulation Merchant 140mm Thermafleece CosyWool Sheep Wool Slab (390mm wide) (OLD SIZE) | Insulation Merchant
    Alternative Now Available
    COSYWOOL SLAB by Thermafleece

    140mm Thermafleece CosyWool Sheep Wool Slab (390mm wide) (OLD SIZE)

    £ Looking for a price?

    Add to a quote for our best rate.

  • SIGA Majvest® 200 SOB - Breather Membrane with Tape (Particularly for Closed Facade) | Insulation Merchant SIGA Majvest® 200 SOB - Breather Membrane with Tape (Particularly for Closed Facade) | Insulation Merchant
    Spring Savings
    MAJVEST® 200 SOB by SIGA

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

    £182.21 ex. VAT
    £2.43 per m²
    £218.65 inc. VAT
    £2.91 per m²
    £218.65 inc. VAT
    £2.91 per m²
    Save £-218.65
    £182.21 ex. VAT
    £2.43 per m²
    £0.00 Save £-182.21
  • SIGA Fentrim® 330 Grey Adhesive Tape - 150mm | Insulation Merchant SIGA Fentrim® 330 Grey Adhesive Tape - 150mm | Insulation Merchant
    Spring Savings
    FENTRIM® 330 GREY by SIGA

    SIGA Fentrim® 330 Grey Adhesive Tape - 150mm

    £140.96 ex. VAT
    £5.64 per LM (linear metre)
    £169.15 inc. VAT
    £6.76 per LM (linear metre)
    £169.15 inc. VAT
    £6.76 per LM (linear metre)
    Save £-169.15
    £140.96 ex. VAT
    £5.64 per LM (linear metre)
    £0.00 Save £-140.96
  • SIGA Farmer Waterproof High Performance Multi-purpose Tape - 60mm x 15m | Insulation Merchant SIGA Farmer Waterproof High Performance Multi-purpose Tape - 60mm x 15m | Insulation Merchant
    Spring Savings
    FARMER by SIGA

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

    £18.25 ex. VAT
    £1.22 per LM (linear metre)
    £21.90 inc. VAT
    £1.46 per LM (linear metre)
    £21.90 inc. VAT
    £1.46 per LM (linear metre)
    Save £-21.90
    £18.25 ex. VAT
    £1.22 per LM (linear metre)
    £0.00 Save £-18.25
  • 140mm STEICO Protect M Dry - 1325mm x 600mm | Insulation Merchant
    Sale 10%
    Spring Savings
    PROTECT M DRY by Steico

    140mm STEICO Protect M Dry - 1325mm x 600mm

    £ Looking for a price?

    Add to a quote for our best rate.

  • 100mm STEICO Protect M Dry - 1325mm x 600mm | Insulation Merchant
    Sale 10%
    Spring Savings
    PROTECT M DRY by Steico

    100mm STEICO Protect M Dry - 1325mm x 600mm

    £24.13 ex. VAT
    £32.30 per m²
    £28.95 inc. VAT
    £38.76 per m²
    £28.95 inc. VAT
    £38.76 per m²
    £32.17 Save £3.22
    £24.13 ex. VAT
    £32.30 per m²
    £26.81 Save £2.68
  • Lime Green Solo Primer - 5 litres | Insulation Merchant
    SOLO PRIMER by Lime Green

    Lime Green Solo Primer - 5 litres

    £ Looking for a price?

    Add to a quote for our best rate.

  • 70mm Thermafleece UltraWool Slab (390mm wide) | Insulation Merchant 70mm Thermafleece UltraWool Slab (390mm wide) | Insulation Merchant
    ULTRAWOOL by Thermafleece

    70mm Thermafleece UltraWool Slab (390mm wide)

    £ Looking for a price?

    Add to a quote for our best rate.

  • 70mm Thermafleece NatraHemp Slab (570mm wide) | Insulation Merchant 70mm Thermafleece NatraHemp Slab (570mm wide) | Insulation Merchant
    NATRAHEMP by Thermafleece

    70mm Thermafleece NatraHemp Slab (570mm wide)

    £ Looking for a price?

    Add to a quote for our best rate.

  • 50mm Thermafleece UltraWool Slab (390mm wide) | Insulation Merchant 50mm Thermafleece UltraWool Slab (390mm wide) | Insulation Merchant
    ULTRAWOOL by Thermafleece

    50mm Thermafleece UltraWool Slab (390mm wide)

    £170.41 ex. VAT
    £12.14 per m²
    £204.49 inc. VAT
    £14.56 per m²
    £204.49 inc. VAT
    £14.56 per m²
    Save £-204.49
    £170.41 ex. VAT
    £12.14 per m²
    £0.00 Save £-170.41
  • SIGA Majcoat® 150 SOB Breather Membrane - 1.5m x 50m | Insulation Merchant SIGA Majcoat® 150 SOB Breather Membrane - 1.5m x 50m | Insulation Merchant
    Spring Savings
    MAJCOAT® 150 by SIGA

    SIGA Majcoat® 150 SOB Breather Membrane - 1.5m x 50m

    £200.00 ex. VAT
    £2.67 per m²
    £240.00 inc. VAT
    £3.20 per m²
    £240.00 inc. VAT
    £3.20 per m²
    Save £-240.00
    £200.00 ex. VAT
    £2.67 per m²
    £0.00 Save £-200.00
  • SIGA Fentrim® 2 50/85 (Pre-folded External Corner Tape) - 25m | Insulation Merchant SIGA Fentrim® 2 50/85 (Pre-folded External Corner Tape) - 25m | Insulation Merchant
    Spring Savings
    FENTRIM® 2 by SIGA

    SIGA Fentrim® 2 50/85 (Pre-folded External Corner Tape) - 25m

    £74.00 ex. VAT
    £2.96 per LM (linear metre)
    £88.80 inc. VAT
    £3.55 per LM (linear metre)
    £88.80 inc. VAT
    £3.55 per LM (linear metre)
    Save £-88.80
    £74.00 ex. VAT
    £2.96 per LM (linear metre)
    £0.00 Save £-74.00
  • 35mm SKANDA Savolit Plus Wood Wool Board - 2000 x 600mm | Insulation Merchant 35mm SKANDA Savolit Plus Wood Wool Board - 2000 x 600mm | Insulation Merchant
    SAVOLIT PLUS - 2000MM by Skanda Savolit

    35mm SKANDA Savolit Plus Wood Wool Board - 2000 x 600mm

    £ Looking for a price?

    Add to a quote for our best rate.

  • 60mm STEICO Therm (wet) - 600mm x 1350mm (Pallet of 38) | Insulation Merchant 60mm STEICO Therm (wet) - 600mm x 1350mm (Pallet of 38) | Insulation Merchant
    Sale 9%
    Spring Savings
    THERM WET by Steico

    60mm STEICO Therm (wet) - 600mm x 1350mm (Pallet of 38)

    £ Looking for a price?

    Add to a quote for our best rate.

  • Lime Green Ultra Lime Plaster Base Coat - 10kg | Insulation Merchant
    ULTRA by Lime Green

    Lime Green Ultra Lime Plaster Base Coat - 10kg

    £ Looking for a price?

    Add to a quote for our best rate.

  • Lime Green Stipple Coat Lime Preparation - 25kg | Insulation Merchant
    STIPPLE COAT by Lime Green

    Lime Green Stipple Coat Lime Preparation - 25kg

    £ Looking for a price?

    Add to a quote for our best rate.

  • Lime Green Solo Filler - 5 Litres | Insulation Merchant
    SOLO PRIMER by Lime Green

    Lime Green Solo Filler - 5 Litres

    £ Looking for a price?

    Add to a quote for our best rate.