SisalwoolTM Loftroll is an innovative insulation developed in Scotland. The rolls are perfect for loft insulation and (with support to stop slumping) other applications including between rafters, joists, partitions and stud walls (for rigid friction fit batts see SisalwoolTM Batts).
SisalwoolTM Loftroll is a high-performance Scottish engineered natural fibre insulation. It is vapour permeable (breathable) , fire resistant and safe to handle.pour permeable (breathable) and has great acoustic performance. It can be handled safely with no risk of harmful chemicals (VOCs) off-gassing.
SisalwoolTMl is a blend of recycled and new sisal fibre, recycled cotton from denim jeans, and a recycled polyester binder.
When rolled out the rolls are 3m long x 500mm wide x 50mm thick.
Closing the loop - Circular economy
Sisaltech's aim is for all the materials that go into their insulations to be from "waste" streams". They work alongside Zero Waste Scotland to identify perfect “waste” streams to mix with the sisal to create high-performing insulation. Until they reach scale though their products are a blend of recycled and new.
The sisal within SisalwoolTM is a mix of recycled sisal coffee sacks from coffee roasters in Scotland and new Sisal fairly traded and imported by ship from Tanzania. Sisal is a great "backup" crop for farmers in Africa as it grows with relatively small amounts of water and succeeds when other crops fail in a drought. You can read all about SisalTech's founder John Ferguson's journey from studying Tropical Agricultural Development for his MSc (where he discovered just how awesome sisal is) to setting up an insulation company in Scotland in our blog post.
The cotton part of the blend is recycled denim and "waste" cotton from the clothing industry. This natural fibre has great thermal properties and is also flexible. Allowing the insulation to be rolled so it's easily fits through loft hatches.
The recycled elements within the insulation means that the colour of the SisalwoolTM insulation changes from batch to batch. This is purely aesthetic and does not affect the performance of the product.
Carbon Neutral footprint
Even though some of the sisal comes from Tanzania east Africa, the carbon footprint of that sisal is low as it is transported by ship. The carbon footprint of the product is further lowered by using recycled materials in the blend.
The carbon footprint of the final product has been independently assessed as carbon neutral at the factory gate.
Technical Information
- Density: 40kg/m3
- Thickness: 50mm, 100mm
- Length: 3000mm
- Width: 500mm
- Thermal Conductivity: 0.037W/mK
- Acoustic performance: 12dB reduction at 500-2000Hz
- Reaction to fire: Euro class E
- Carbon footprint: Carbon neutral
- End of life: Return for recycling
Documentation
Further Information
Read more about SisalTech and Sisal as a crop in our SisalwoolTM Natural Fibre Insulation blog post.
