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Knauf Loft Roll 44 150mm Insulation - 9.18m2 Pack

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£41.82 Incl. VAT
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Earthwool Loft Roll 44 is a flexible low density glass mineral wool quilt which is lightweight, resilient and non-combustible. The rolls are 1140mm wide and partially perforated to produce either 2 rolls 570mm wide or 3 rolls 380mm wide.

Earthwool Loft Roll 44 has a thermal conductivity of 0.044W/mK and is classified as Euroclass A1 to BS EN 13501-1.

Earthwool Loft Roll 44 represents no known threat to the environment and has zero Ozone Depletion Potential and zero Global Warming Potential.

For pitched roofs at ceiling level and suspended timber floors.


Thickness: 150mm.
8.05m x 1.14m - 2 x 570mm / 3 x 380mm.
Thermal resistance:
3.40 m²K/W.
Thermal conductivity:
0.044 W/mK.
Fire rating:
Euroclass A1 to BS EN 13501-1.


Earthwool Loft Roll 44 primary use is for the thermal insulation of pitched roofs at ceiling level, it can also be used to thermally insulate floors. When used at ceiling level it is usually laid in two layers, with the first layer between the joists and the second layer over, and at right angles to the joists.

Earthwool Loft Roll 44 is odourless, rot proof, non-hygroscopic, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria.

Vapour resistivity
Earthwool Loft Roll 44 offers negligible resistance to the passage of water vapour and has a vapour resistivity of 5.00MNs/g.m.


  • Produced for use with timber joists at 400mm and 600mm centres.
  • Lightweight and economic insulation quilt.
  • Provides thermal, acoustic and fire performance.
  • Partially cut perforations.


Length 8050mm Thickness 150mm Width 1140mm


Thermal Conductivity 0.044 W/mK Application Between Rafter
Stud Walls
Pitched Roofs
Material Glass Fibre
Roll Size 1.14m x 8.05m
Range Loft Roll 44

Questions & Answers


Is this flame resistant?


This product is A1 fire rated, meaning it is non combustible and will not contribute to the spread of flame. 


Can I use this material for insulating a suspended timber floor on the ground level?


You can do yes. But as this product is not rigid in any sense of the word, you would need to provide additional support to help keep the loft roll insulation in place I.e insulation netting, to stop it from falling through.

Have a question about this product?


4.5 / 5 3 reviews
nadine ievers
3rd May
excellent product
Mr. Keri James
31st October 2020
Difficult to cut into sections but once rolling along , deployed very well.
Julie Fermor
12th April 2020
Arrived on time. Would use your company again
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Knauf Loft Roll 44 150mm Insulation - 9.18m2 Pack

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