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Isonat® - Hemp / Recycled Cotton Fibre Insulation Batts

Technical Information Sheet

Description	Isonat is a natural fibre insulation material made from hemp and recycled cotton fibres. These fibres are bound together using a thermoplastic binder. Isonat® is treated with inorganic salts to provide fire and pest resistance. Isonat® is simple to install, and is non-irritant to touch. Isonat® is authorised for use throughout the EU by the French CSTB (Centre Scientifique et Technique du Batiment), certificate references Avis Technique 20/04-49 and Avis Technique 20/05-50.
Availability	Isonat® is available in the following specifications (special widths to order) Product Density (kg/m3) Thickness (mm) Widths (mm) Lengths (mm) Packing Batts 30 - 37 50 400 1200 48 / pack Batts 30 - 37 50 600 1200 12 / pack Batts 30 - 37 80 400 1200 28 / pack Batts 30 - 37 80 600 1200 7 / pack Batts 30 - 37 100 400 1200 24 / pack Batts 30 - 37 100 600 1200 6 / pack
Design	Isonat® can be used in loft spaces, within walls and under floors. Isonat® has technical, performance and environmental benefits compared to conventional mineral and cellular plastic insulants.
Physical Properties of Natilin®	•Thermal Conductivity 0.039 W/mK •Fire protection rating Euroclass D equivalent to B2 • Vapour Diffusion Resistance Factor µ 1 - 2 • Water Vapour Absorption (hygroscopic takeup) Average 10% with increase of relative humidity from 50% to 85%
Moisture Absorption and Release	Isonat® can absorb and release moisture without degrading and without significant loss of thermal resistivity. This gives it a margin of safety against the formation of interstitial condensation. It is suitable for use in 'breathing' wall construction.
Resistance to Passage of Sound	Isonat® is effective in reducing the transmission if airborne, and also impact sound through the building envelope.
Resistance to Fire	Isonat® is treated with Boron salts to provide a B2 fire rating. Isonat® has greater fire resistance than cellular plastic insulants
Resistance to Decay	In common with wood, flax fibres are based on cellulose. Therefore, prolonged exposure to water will cause decay. •The Boron treatment prevents attack from rodent's moulds and fungi • When properly installed Isonat® will retain its loft and thermal performance for the life of the building
Installation	Cutting   Isonat® insulation can be cut with an insulation knife, or a stanley knife. No other special tools are required. Use a straight edge and cut onto a board, compressing the insulation, as it is cut. Isonat® tears readily across the length Fixing walls Isonat® batts are firmly pressed into place between studs to ensure a snug fit with no gaps. Square cut edges of batts should be fitted tightly together without gaps   floors, lofts and ceilings Ensure that insulation is fitted fully between joists/rafters, with no gaps. Any odd shaped gaps should be filled with Isonat® offcuts.
Site Notes	Isonat® should be stored under cover, flat (not on end) and clear of the ground until ready for use.
Health and Safety	Hemp and recycled cotton fibres are harmless, therefore Isonat® can be installed without gloves or protective clothing. Isonat® is not irritating to the skin, eyes or respiratory system.

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