Mike Wye & Associates
Suppliers of Natural Building and Decorating Products
  • Phone us on 01409 281644
  • E-mail us by clicking on sales@mikewye.co.uk

  • Write to us at Buckland Filleigh Sawmills, Buckland Filleigh, Devon EX21 5RN, England.

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    SHEEPSWOOL INSULATION

    Technical Information Sheet

    • Description Sheepswool Insulation is an insulation batt made from sheep's wool. UK produced wool is bound into batts using polyester fibres for reinforcement and treated with an inert, naturally occurring mineral, to provide pest, fungal and enhanced fire resistance. The batts are square cut to ensure a close fit.

    Consistency of the product is monitored by quality tests carried out by the manufacturer:
  • Visual grading of wool before binding
  • Visual checks of the finished product for damage & flaws before shipping

    Sheepswool Insulation is available in the following sizes:

    Product code
    Thickness of batt,
    mm
    Width of batt,
    mm
    Length of batt,
    mm
    No. of batts
    in pack
    IWB504
    IWB506
    50
    400
    600
    1200
    1200
    42
    28
    IWB754
    IWB756
    75
    400
    600
    1200
    1200
    27
    18
    IWB1004
    IWB1006
    100
    400
    600
    1200
    1200
    21
    14

    •  

    Design

    Sheepswool Insulation batts can be used in a wide variety of roof, wall and floor constructions and offer greater environmental, technical and performance benefits than conventional alternatives.

    Sheepswool Insulation batts are suitable for use as insulation in solid or cavity 'breathing wall' construction, fire barriers and for reducing airborne and impact noise.

    Sheepswool Insulation batts retain their insulating properties when wet and naturally regain their loft after compression.
    Physical properties
  • Density
    		• 22.5 kg/m³
  • Thermal Conductivity (K)
    		• 0.038 W/mK
  • Vapour Resistivity
    		• 7.00 MNs/g
  • Vapour Diffusion Resistance Factor (ref. air)     
    		• µ 1.0
  • Water Absorption ( @100% RH )
    		• 40%
  • Sound Absorbing Properties
    		• To be advised
    Moisture Absorption
    and Release:     		Sheepswool Insulation can absorb and release moisture without degrading or 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:         		Sheepswool Insulation is effective in reducing the transmission of airborne and impact sound through the building envelope.
    Resistance to Fire: Sheepswool Insulation has greater fire resistance than cellulose or cellular plastic insulants: it does not burn, but melts away from an ignition source and self-extinguishes.
    The inert, naturally occurring mineral enhances the the natural fire resistance to comply with AS 1530.3-1989 (Spread of Fire) ignitability, spread of flame, heat evolved - score 0, smoke evolved - score 7.
    Ignition Point 560 ºC
    Formaldehyde Absorption: Sheepswool Insulation, by virtue of the natural properties of wool, can absorb large quantities of the formaldehyde that is commonly found in most buildings. (Tests carried out by the Central Testing Facility, Tokyo)
    Resistance to Decay: Prolonged exposure to water or sunlight will cause the wool to degrade, in common with any organic material.
    Treatment of the wool with an inert, naturally occurring mineral prevents attack from rodents, moulds or fungi.
    When properly installed Sheepswool Insulation will retain its loft and thermal performance for the life of the building.
    Installation  
    Cutting:

    Fixing:    		 Sheepswool Insulation can be cut with an insulation knife. No other special tools are required.

     Sheepswool Insulation batts are firmly pressed into place between studs to ensure a snug fit with no gaps.
    Square-cut edges of batts should be fitted together without gaps.
    Site Notes Sheepswool Insulation batts should be stored undercover and clear of the ground until ready for use.
    Health and Safety Sheepswool Insulation is harmless and can be installed without gloves or protective clothing.
    It is not irritating to the skin, eyes or respiratory system.
    Loose fibres are not harmful Sheepswool Insulation contains no permethrin, pyrethroids, pesticides or formaldehyde.

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