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Sheeps Wool Loft Insulation CosyWool by Thermafleece 150mm x 370mm - 4.77m2

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Est. Delivery: 3-5 Working Days
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£67.66 Incl. VAT
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Product Description

Thermafleece CosyWool is a versatile insulation rich in sheep’s wool and is the ideal choice if you are looking for all round performance and value for money. Research shows that using 75% wool in combination with recycled fibres outperforms alternative products with a higher percentage of wool. Our wool rich blend ensures you get the full benefit of sheep’s wool with enhanced performance, durability and sustainability.

Thermafleece CosyWool’s convenient compressed form reduces transport impacts by more than 50% compared to other natural insulation and makes it ideal for quick and easy installation. Once unpacked, it regains its original thickness to provide excellent thermal and acoustic performance.

Deliveries to the postcodes AB, IV, KW, PH, PA, HS, KA, ZE and to ROI/NI may incur additional delivery charges.

4.77m2 coverage per pack.
3 items per pack.


Length: 4.3m.
Width: 370mm.
Thickness: 150mm.
Thermal Conductivity: 0.039 W/mK.
Water Absorption (@100% RH): 30% w/w.
Specific Heat Capacity: 1800 Jkg-1K-1.
Ignition Point: >500°C.
Density: 18 kgm-3.
Can be used to achieve airborne sound reduction of Rw = 40dB.


  • Roofs: loft & warm roof.
  • Walls: timber frame & solid (internal).
  • Floors: all levels above DPC.
  • Acoustic: walls, floors & roofs.

Product Documents

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WIDTH 370mm LENGTH 4300mm THICKNESS 150mm


Lambda 0.039 W/mK Application Stud Walls Features Moisture Resistant Material Sheeps Wool
Fire Protection Self Extinguishing Product Type Roll Thermal Conductivity 0.039 W/mK

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Questions & Answers


Will 370mm width thermafleece need trimming to fit within 13 inch (330mm) spaced joists or will it compress into place?


For products such as these, they can be compressed to an extent to fit between joists, and then by the product trying to expand again can help assist to keep the insulation in place.


It would be down to yourself to decide if it would need trimming, and if you require further advice please do not hesitate to get in touch with us!

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Product Reviews

5 / 5 4 reviews
23rd February
pleasant to work with. Worth the extra price over synthetic materials and feels very warm
Ian Turner
16th February
nice natural insulation
shayne lynch
7th June 2020
Excellent product
paula fleischmann
13th May 2020
Fast delivery good product easy to lay
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Sheeps Wool Loft Insulation CosyWool by Thermafleece 150mm x 370mm - 4.77m2

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