This insulation uses the fibres

This insulation uses the fibres of the flax plant's stem. It has temperature and moisture regulating qualities, being able to absorb moisture in high humidity and release it again when humidity is low. It is wood panel fence ideasmade in Germany, Finland & France and potato starch can be used to bind the material making it 100% natural. It is delivered in slabs and can be handled without gloves. Brands include Isovlas.

Dense latex foam with a fibre glass face is available for internal cheapest way to rebuild a patio IranDIY wall insulation (eg. Sempatap 10mm foam). It is can be bought in rolls and glued to the wall rather like wallpaper, before being painted over. This is not to be confused with Urea Formaldehyde Foam - a very different product piped into cavity walls in the 1970s - which emits formadehyde whilst drying.

This product has fallen from use in the UK and should now only considered in affordable composite deckingexceptional circumstances where it can help hold crumbling brickwork together. See 'Polystyrene' for solid foam insulation.