Glass Mineral Wool - Knauf Insulation Rafter Roll 32

Knauf Insulation Rafter Roll 32


Pitched roofs at rafter level


Glass Mineral Wool


Rafter Roll is a glass mineral wool roll, designed for use in warm roofs for insulating the rafters. It offers the best thermal conductivity of 0.032 W/mK in our range.

Rafter Roll is non-combustible with the best possible Euroclass A1 reaction to fire classification, and is manufactured using our unique bio-based binder, ECOSE® Technology.


  • Best thermal performance in our range.
  • Rolls are 1200mm wide to allow cutting for installation at varying rafter centre dimensions, providing flexibility on-site.
  • Manufactured from mineral wool which provides the best levels of sound absorption and reduction compared to other mainstream insulants to reduce the drumming effects of rainfall.

For historical versions of product documentation, or documents relating to any discontinued products, please contact us with your requirements at [email protected].



Thickness (mm) Length (mm) Width (mm) Thermal Conductivity (W/mK) R-value (m²K/W) Area per roll (m²) Euroclass Reaction to Fire Classification Roll Type Quantity per pack Packs per pallet
75 5250 1200 0.032 2.30 6.300 A1 Uncut 1 24
100 4000 1200 0.032 3.10 4.800 A1 Uncut 1 24

Certification & Memberships

Eurofins Gold Eurofins Gold
Euroclass A1 Reaction to Fire Classification Euroclass A1 Reaction to Fire Classification
Green Guide Rating A+ Green Guide Rating A+
CE Marking CE Marking
EN 15804 EN 15804
Made in Britain Made in Britain
DECLARE 'Red List Free' DECLARE 'Red List Free'

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