Earthwool Loft Rolls are non-combustible, Glass Mineral Wool rolls. The Knauf Insulation Loft Roll 44 Combi Cut is manufactured using our revolutionary ECOSE® Technology, and designed specifically for use in cold lofts where pitched roofs are insulated at ceiling level. Loft Roll 44 is free from CFC’s, HCFCs and it’s classification as Zero ODP and Zero GWP means it has a low impact on the environment.
Combi-cut products have partially cut perforations. This helps to provide flexibility when used between joists at either 400mm or 600mm centres or used unsplit as a full-width roll. Ready-cut products are fully cut and are designed to be used between joists at 600mm centres.

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Knauf Loft Roll 44
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Knauf 100mm Loft Roll 44 – Combi Cut (13.89m2 Roll)

Original price was: £34.99.Current price is: £28.75. ex VAT
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Knauf Loft Roll 44
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Knauf 150mm Loft Roll 44 – Combi Cut (9.18m2 Roll)

Original price was: £34.99.Current price is: £28.75. ex VAT
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Knauf 200mm Loft Roll 44 – Combi Cut (6.84m2 Roll)

Original price was: £34.99.Current price is: £28.75. ex VAT

Please see below our Knauf Insulation Loft Roll 44 datasheet and safety regulations.


  • Non-combustible A1 Euroclass Reaction to Fire classification
  • It is manufactured by standards set out by BS EN 13162:2008, EN 16001:2006 Energy Management Systems
  • OHSAS 18001:2007 Occupational Health and Safety Management Systems
  • ISO 14001:2004 Environmental Management Systems
  • ISO 9001:2008 Quality Management Systems, as certified by Bureau Veritas
  • Euroclass A1 to BS EN ISO 13501-1

More Information:
Earthwool Loft Roll 44 has a thermal conductivity of 0.044 W/mK.
Vapour-resistant: Yes
Material type: Glass Mineral wool
Knauf Insulation Loft Roll 44 Combi Cut is available in roll lengths:

  • 100mm (13.89m2)
  • 150mm (9.18m2)
  • 170mm (8.01m2)
  • 200mm (6.84m2)

Knauf Loft Roll 44 Datasheet

Thickness (mm)Thermal Conductivity (W/mK)Thermal Resistance (m2K/W)Length (m)Width (mm)Area Per Pack (m2)

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Knauf Loft Roll 44 Installation Guide

Before you begin Installing Knauf Loft Roll 44

Check for any heavy-duty electrical wiring before you lay the roll. Any heavy-duty electrical wiring should always be kept above the insulation to avoid the possibility of overheating. Lower amp lighting cable should be ok to leave as is.

Check for any down lighters or hot flues and make sure that the insulation is kept clear by at least 75mm to avoid the risk of a fire.

Gloves can be handy when laying and fitting loft roll but not essential.

Step 1:

Make sure the area is completely clear. Have 2 crawling boards thick enough to take your weight to stop you from slipping on the joists or falling through the ceiling.

Step 2:

Start at the furthest point of the loft hatch and lay 100mm thick insulation between the joists.

Gently push the roll in at the edges to get a snug fit but don’t push down too much – remember you want as much air as possible to be trapped in the insulation.

If you have any old insulation in place you can decide to either start fresh or to simply lay the new insulation on the top of the old insulation.

Start laying the roll at the eaves making sure you leave a slight gap for the air to circulate (25mm ventilation gap). Then roll out towards the centre of the loft. If you have difficulty pressing the material down in the corners of the room, a broom stick can be a handy tall to help to press the loft roll down in those harder to reach areas.

When the roll runs out, simply start a new role and put the 2 ends together.

When you need to cut the roll, mark the length where you need to cut. Grip the roll between 2 boards (one above and one below to hold the role in place) and cut with a Stanley knife.

Step 3:

Once you have filled between the joists you now need to lay another layer across the top of the joists to avoid heat loss.

Remember you are looking for a combined thickness of over 270mm so for the top layer a minimum of 200mm thickness is recommended. The thicker the better to provide the best insulation to the house/ commercial space, maximise savings and keep energy bills low.

Once you have rolled the entire top layer the job is now complete.

You can find more information about Knauf loft roll in the below video: