Glass Mineral Wool - Ceiling Loft Roll (Combi-cut)

Ceiling Loft Roll (Combi-cut)


Pitched Roofs at Ceiling Level


Glass Mineral Wool


Ceiling Loft Roll (Combi-cut) are available as 1140mm wide Combi-cut variants. Combi-cut rolls have perforation cuts, allowing ease of separation so that each roll can be used in joists at 750mm centres, or 400mm centres, or split in half to be used in 600mm joist centres. They can also be used unsplit as full 1140mm widths.

Installing Ceiling Loft Roll (Combi-cut) will contribute to reduced energy consumption, saving money and reducing heat gain during the day, and heat loss during the evening, providing a more comfortable living and working environment.

This range offers a wide selection of thicknesses and R-values.

Our advanced compression packaging technology ensures more insulation per pack, saving on transportation, storage space and reducing the amount of handling.


  • Partially cut rolls for use with
    - joists at 400mm centres (1 x 380mm width) or
    - joists at 600mm centres (1 x 570mm width) or
    - joists at 750mm centres (2 x 380mm widths)
    - unsplit as a full width roll
  • Non-combustible A1 Euroclass Reaction to Fire classification
  • Contributes to saving energy and reducing energy bills
  • Lightweight flexible quilt 
  • Manufactured with ECOSE® Technology



Product Name Thickness (mm) Length (mm) Width (mm) Product Format Area per Pack (m²) Quantity per Pack Packs per Pallet Area per Pallet (m²) R-Value (m²K/W) Thermal Conductivity
Ceiling Loft Roll 44 (Combi-cut) 100 12180 1140 (2x570/3x380) Combi-cut 13.89 1 24 333.25 2.25 0.044
Ceiling Loft Roll 40 (Combi-cut) 100 11250 1140 (2x570/3x380) Combi-cut 12.83 1 24 307.80 2.50 0.040
Ceiling Loft Roll 44 (Combi-cut) 150 8050 1140 (2x570/3x380) Combi-cut 9.18 1 24 220.25 3.40 0.044
Ceiling Loft Roll 40 (Combi-cut) 150 7530 1140 (2x570/3x380) Combi-cut 8.58 1 24 206.02 3.75 0.040
Ceiling Loft Roll 44 (Combi-cut) 200 6840 1140 (2x570/3x380) Combi-Cut 6.84 1 24 164.16 4.55 0.044
Ceiling Loft Roll 40 (Combi-cut) 200 4850 1140 (2x570/3x380) Combi-Cut 5.53 1 24 132.70 5.00 0.040


Made in Britain Made in Britain


Product Insulation Guide 2019
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June 2019


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Knauf Insulation Company Profile
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June 2019


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Additional Product Information

ECOSE® Technology

ECOSE® Technology is our revolutionary sustainable bio-based binder used in the manufacture of all of our glass mineral wool products, and the majority of our rock mineral wool products. invented nearly 10 years ago, it is not only unique, but very much central to our sustainability strategy.  Our ECOSE® Technology is present in Ceilling Roll (Loft Roll) and is just another key benefit of our products.

ECOSE® Technology has 5 key benefits

  • A natural binder
  • A lower embodied energy
  • Proven durability
  • Optimum indoor air comfort
  • Easy to handle

We care for the people who make our products, the people who use them and the world we all depend on.

Whilst we are dedicated to supplying sustainable high performance insulation solutions for enhanced energy efficiency in buildings, we also continually strive for improvements in our manufacturing and supply chain operations so to improve quality and minimise our impact on the environment. All Knauf Insulation production locations have state-of-the-art manufacturing equipment and meet the highest quality standards as well as they are supported by an ongoing research and development program. All of our products including Ceiling Roll (Loft Roll) are sustainably manufactured.

At Knauf Insulation, we have 7 key sustainability considerations:

  • to conserve natural resources
  • to reduce the evironmental effects of our own processes
  • Treating people fairly, along the supply chain
  • Delivering our products efficiently
  • Building a comfortable and healthy indoor environment
  • Performance reporting
  • Recognition