| http://www.w3.org/ns/prov#value | - This multi foil insulation can be used in new builds where the rafter installation depth is 100mm or 150mm, it is also widely used in renovation and refurbishment projects such as barn conversions and loft conversions or extensions above or below the roof timbers, as a multi-foil insulation it requires a 25mm air gap either side of the insulation to work effectively.
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