Loft & Underfloor Insulation

Now is the best time to upgrade your loft or underfloor (suspended timber) insulation for the winter months. View our collection of insulation and accessories.
Loft & Underfloor Insulation
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  • LOFT LEG Loft Flooring Legs - Raise Loft Boards by 175mm (12 per box) | Insulation Merchant LOFT LEG Loft Flooring Legs - Raise Loft Boards by 175mm (12 per box) | Insulation Merchant
    LOFT LEG by Loft Leg

    LOFT LEG Loft Flooring Legs - Raise Loft Boards by 175mm (12 per box)

    €14,95 EUR ex. GB VAT
    €1,24 per ea
    €14,95 EUR ex. GB VAT
    €1,24 per ea
    Save €-14,95
  • LOFT LEG XL Loft Flooring Legs - Raise Loft Boards by 300mm (12 per box) | Insulation Merchant LOFT LEG XL Loft Flooring Legs - Raise Loft Boards by 300mm (12 per box) | Insulation Merchant

    4.0

    LOFT LEG by Loft Leg

    LOFT LEG XL Loft Flooring Legs - Raise Loft Boards by 300mm (12 per box)

    €17,95 EUR ex. GB VAT
    €1,49 per ea
    €17,95 EUR ex. GB VAT
    €1,49 per ea
    Save €-17,95
  • COROTOP Light - Breathable Membrane - 1m x 50m (50m²) | Insulation Merchant COROTOP Light - Breathable Membrane - 1m x 50m (50m²) | Insulation Merchant

    5.0

    LIGHT by Corotop - Membranes

    COROTOP Light - Breathable Membrane - 1m x 50m (50m²)

    €37,95 EUR ex. GB VAT
    €0,75 per m²
    €37,95 EUR ex. GB VAT
    €0,75 per m²
    Save €-37,95
  • Insulation Support Netting - 1m x 100m | Insulation Merchant

    5.0

    SUPPORT NETTING by Insulation Merchant

    Insulation Support Netting - 1m x 100m

    €24,95 EUR ex. GB VAT
    €0,24 per m²
    €24,95 EUR ex. GB VAT
    €0,24 per m²
    Save €-24,95
  • Insulation Support Netting - 2m x 100m | Insulation Merchant
    SUPPORT NETTING by Insulation Merchant

    Insulation Support Netting - 2m x 100m

    €48,95 EUR ex. GB VAT
    €0,24 per m²
    €48,95 EUR ex. GB VAT
    €0,24 per m²
    Save €-48,95
  • 100mm Superglass Multi-Roll 44 | Insulation Merchant 100mm Superglass Multi-Roll 44 | Insulation Merchant
    MULTI-ROLL 44 by Superglass

    100mm Superglass Multi-Roll 44

    €33,95 EUR ex. GB VAT
    €2,80 per m²
    €33,95 EUR ex. GB VAT
    €2,80 per m²
    Save €-33,95
  • 150mm Superglass Multi-Roll 44 | Insulation Merchant 150mm Superglass Multi-Roll 44 | Insulation Merchant
    MULTI-ROLL 44 by Superglass

    150mm Superglass Multi-Roll 44

    €32,95 EUR ex. GB VAT
    €4,27 per m²
    €32,95 EUR ex. GB VAT
    €4,27 per m²
    Save €-32,95
  • 200mm Superglass Multi-Roll 44 | Insulation Merchant 200mm Superglass Multi-Roll 44 | Insulation Merchant
    MULTI-ROLL 44 by Superglass

    200mm Superglass Multi-Roll 44

    €31,95 EUR ex. GB VAT
    €5,68 per m²
    €31,95 EUR ex. GB VAT
    €5,68 per m²
    Save €-31,95
  • 100mm Superglass Multi-Roll 40 | Insulation Merchant 100mm Superglass Multi-Roll 40 | Insulation Merchant
    MULTI-ROLL 40 by Superglass

    100mm Superglass Multi-Roll 40

    €38,95 EUR ex. GB VAT
    €3,33 per m²
    €38,95 EUR ex. GB VAT
    €3,33 per m²
    Save €-38,95
  • 150mm Superglass Multi-Roll 40 | Insulation Merchant 150mm Superglass Multi-Roll 40 | Insulation Merchant
    MULTI-ROLL 40 by Superglass

    150mm Superglass Multi-Roll 40

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  • 200mm Superglass Multi-Roll 40 | Insulation Merchant 200mm Superglass Multi-Roll 40 | Insulation Merchant
    MULTI-ROLL 40 by Superglass

    200mm Superglass Multi-Roll 40

    €45,95 EUR ex. GB VAT
    €8,61 per m²
    €45,95 EUR ex. GB VAT
    €8,61 per m²
    Save €-45,95
  • 50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 570mm (5.47m²) 50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 570mm (5.47m²)
    INDITHERM HEMP - 570 by IndiNature®

    50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 570mm (5.47m²)

    €45,95 EUR ex. GB VAT
    €8,40 per m²
    €45,95 EUR ex. GB VAT
    €8,40 per m²
    Save €-45,95
  • 100mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 570mm (2.74m²) 100mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 570mm (2.74m²)

    5.0

    INDITHERM HEMP - 570 by IndiNature®

    100mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 570mm (2.74m²)

    €45,95 EUR ex. GB VAT
    €16,77 per m²
    €45,95 EUR ex. GB VAT
    €16,77 per m²
    Save €-45,95
  • 50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (3.55m²) 50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (3.55m²)
    INDITHERM HEMP - 370 by IndiNature®

    50mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (3.55m²)

    €29,95 EUR ex. GB VAT
    €8,44 per m²
    €29,95 EUR ex. GB VAT
    €8,44 per m²
    Save €-29,95
  • 100mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (1.78m²) 100mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (1.78m²)

    5.0

    INDITHERM HEMP - 370 by IndiNature®

    100mm IndiNature IndiTherm Hemp Flexibatt Insulation - 1200 x 370mm (1.78m²)

    €29,95 EUR ex. GB VAT
    €16,83 per m²
    €29,95 EUR ex. GB VAT
    €16,83 per m²
    Save €-29,95
  • 100mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant 100mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchantv

    5.0

    COSYWOOL by Thermafleece

    100mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls)

    €98,95 EUR ex. GB VAT
    €13,70 per m²
    €98,95 EUR ex. GB VAT
    €13,70 per m²
    Save €-98,95
  • 100mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant 100mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant

    5.0

    COSYWOOL by Thermafleece

    100mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls)

    €100,95 EUR ex. GB VAT
    €13,62 per m²
    €100,95 EUR ex. GB VAT
    €13,62 per m²
    Save €-100,95
  • 150mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant 150mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls) | Insulation Merchant

    4.6

    COSYWOOL by Thermafleece

    150mm Thermafleece CosyWool Sheep Wool (3 x 370mm rolls)

    €97,95 EUR ex. GB VAT
    €20,53 per m²
    €97,95 EUR ex. GB VAT
    €20,53 per m²
    Save €-97,95
  • 150mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant 150mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls) | Insulation Merchant

    5.0

    COSYWOOL by Thermafleece

    150mm Thermafleece CosyWool Sheep Wool (2 x 570mm rolls)

    €100,95 EUR ex. GB VAT
    €20,60 per m²
    €100,95 EUR ex. GB VAT
    €20,60 per m²
    Save €-100,95
  • Knauf Loft Roll 44 | Insulation Merchant Knauf Loft Roll 44 | Insulation Merchant
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    5.0

    LOFT ROLL by Knauf Insulation

    100mm Knauf Loft Roll 44 (Combi-Cut)

    €44,95 EUR ex. GB VAT
    €3,24 per m²
    €44,95 EUR ex. GB VAT
    €3,24 per m²
    Save €-44,95