Wood chip cavity fill insulation - Cemwood CW1000


  • Cemwood CW1000 cavity fill is:-

    • an eco friendly, free flowing, cavity fill insulation made from mineralised wood chips.
    • ideal for filling block/brick cavities where external insulation will be applied.
    • excellent as acoustic and thermal insulation in suspended floors.
    • a levelling underlay to the Lithotherm underfloor heating heating system.
    • great for adding thermal mass to a building.

    Where is it used?

    • It is free flowing and so can be blown or poured into cavities to add insulation to walls and into to awkward areas such as suspended floors, between joists. 
    • It can also be used up to 100mm thickness as a levelling fill under floors or our Lithotherm underfloor heating.

    How is it used?

    • Voids should be dry and free of debris and moisture for maximum effectiveness. 
    • The Cemwood CW1000 comes in sacks and can be simply poured in to place and levelled off.
    • If used in a cavity wall ensure cavity trays are installed to prevent Cemwood filling up below DPC.

    How much do I need?

    • Each 16kg bag of Cemwood CW1000 will cover up to 1m2 at 50mm thickness. 
    • This product can be bought by the 16kg bag or by the pallet of 34 bags (15% discount on single bag price).
Each 16kg bag of Cemwood CW1000 will cover up to 1m2 at 50mm thickness. Each pallet contains 34 bags (34m2 @50mm thick)


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