Our Sisalwool Loftroll sale ends soon. 20% off regular prices. Click here.

Datasheet: Sisalwool Loftroll

Inspired by nature’s ability to be strong and gentle all at once, Sisalwool natural fibre insulation boasts superior breathability and exceptional usability.


Key benefits:

  • Contents: 40% sisal, 40% cotton, 20% bi-co binder
  • Breathable Structure: allowing moisture to transfer for a healthier indoor environment
  • Flexible Fitting: can be rolled out easily between joists, and around cables or pipes
  • Safe to Touch: can be handled safely, comfortably and does not cause skin irritation
  • Acoustic Excellence: offers proven Class B sound absorption
  • Low Carbon: using natural and circular economy materials such as recycled sisal and cotton
  • Universally Compatible: suitable for both new build and retrofit
  • Fully Recyclable: can be returned at end of life for reprocessing

Product Specifications

Density 40kg/m3
Thickness 50mm
Length 3000mm
Width 570mm

Technical Specifications

Property Standard Unit Value
Thermal conductivity BS EN 12667 W/mk 0.037
Water absorption EN 1609 Wp kg/m2 7.62
Water vapour diffusion BS EN 12086 µ (MU) 1.34
Reaction to fire EN 13501-1 Euroclass E
Sound absorption EN ISO 354 and EN ISO 11654 αw 0.80 (Class B)
Moth resistance ISO 3998 according to EAD Pass
Note: All above values are indicative and natural variation between batches will occur.



Data sheet download

Download PDF

the sisalwool collection

Interested in using Sisalwool?

We don't blame you. Browse the full catalogue today.

View Products