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150mm Knauf Earthwool Loft Roll 44's primary use is for the thermal insulation of pitched roofs at ceiling level, although it can also be used to thermally insulate floors.


Key Features

  • Use in loft pitched roofs and floors
  • A1 non-combustible
  • 0.044 W/mK thermal conductivity
  • Easy to handle and install
  • Ready-cut for use at 600mm or 400mm centres
  • Zero Ozone Depletion Potential (ODP)


Technical Specification


Material Type:Glass Mineral
Width:1140 (2x570/3x380)mm
Sales Unit:Roll
Sales Unit Coverage:9.18m2
Brand:Knauf Insulation
Manufacturer's Reference:2404155
Thermal Conductivity:0.044W/mK
Fire Rating:A1 Non-Combustible


Still the bustle with 150mm Knauf Earthwool Loft Roll 44 Combi-Cut Insulation. Made using Knauf Insulation's innovative ECOSE Technology, these lightweight, flexible rolls are soft to the touch and a delight to handle, making them the perfect solution for insulating a cold loft at ceiling level. 

150mm Knauf Insulation Loft Roll 44 comes in a 1140mm full width roll that is supplied partially perforated at 570mm and 380mm centres, allowing it to fit easily between the roof rafters or floor joists. Not only is it a wonderful sound absorber, but it also offers excellent thermal performance with a thermal conductivity of 0.044 W/mK. Not only that but it also has a reaction to fire classification of A1 non-combustible, offering the highest level of fire performance available.


150mm Knauf Earthwool Loft Roll 44 Insulation Combi-Cut Applications



Knauf Earthwool Loft Roll 44 150mm comes with partially cut perforations for use with timber joists at 400mm or 600mm centres. Earthwool Loft Roll 44 150mm insulation roll is primarily used for the thermal insulation of pitched roofs at ceiling level, yet it can also be used to thermally insulate floors.

Primary Applications: 

  • Pitched roofs at ceiling level 
  • 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. 

If installed correctly, these lightweight 150mm loft insulation rolls have a long lifespan. In general, glass mineral wool has a lifespan of 25 years.

150mm Knauf Earthwool Loft Roll 44 Insulation Combi-Cut Specifications

  • Odourless, rot-proof and non-hygroscopic
  • Available as partially cut rolls for use with timber joists at 400mm centres or, timber joists at 600mm centres
  • Do not sustain vermin and will not encourage the growth of fungi, mould or bacteria
  • Contains no ozone-depleting substances or greenhouse gases
  • Euroclass A1 reaction to fire classification - non combustible
  • Compression packed and lightweight for easy handling and moving around a site
  • Helps to save on your house energy bills
  • Lightweight and economic insulation quilt
  • Excellent acoustic and fire performance


150mm Knauf Earthwool Loft Roll 44 Insulation Certifications

  • Generic BRE Green Guide Rating A+
  • Classified as Zero ODP (Zero Ozone Depletion Potential) and Zero GWP (Zero Global Warming Potential)
  • A1 Euroclass Fire Rating
  • Manufactured in accordance with BS EN 13162
  • Awarded the DECLARE `Red List Free’ label - meaning no 'Red List' ingredients, including formaldehyde or phenol


Knauf 150mm Insulation Handling

Knauf Loft Roll Insulation stands apart from the other insulation manufacturers in the UK because it invests in eco-friendly alternatives. ECOSE Technology is just one of the ways that Knauf Insulation creates a better handling experience, maximising on-site efficiency. Whereas most manufacturers use binding agents that create dust and irritate the skin, Knauf Insulation invests in binders that do not have added formaldehyde or phenol.

Knauf's 150mm Earthwool loft roll 44 insulation roll is soft and easy to handle. It is even made from natural raw materials. Eco-conscious individuals love Earthwool loft rolls. The manufacturing process requires 70% less energy than traditional binders used in the manufacture of other building materials.

Knauf Earthwool Loft Roll 44 150mm Installation

Knauf Insulation Loft Roll 44 Combi-Cut insulation is designed for installation in lofts between suspended timber floors and pitched roofs at ceiling level. A first layer will give satisfactory thermal performance, but a second layer will improve the thermal resistance of the buildup even further. Unlike insulation boards, rolls do not have facings. In most cases, you will have to install protective sheets on top of the roll to ensure its longevity.

About Knauf Insulation

Knauf Insulation has over 40 years experience in the insulation industry, and is considered one of the major brands of fibreglass insulation. They promise ‘smarter choices’ to people who want to invest in premium-quality thermal and acoustic insulation. The Earthwool range contains premium sound-deadening insulation such as the acoustic roll.

150mm Knauf Earthwool Loft Roll 44 Insulation Combi-Cut (9.18m2/Roll)

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