Reference: Insulating pitched roofs at rafter level/warm roofs (2012) English Heritage

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Abstract or summary

This guidance note provides advice on the principles, risks, materials and methods for insulating pitched roofs at rafter level. When insulation is placed at this position the roof is often referred to as a \'warm roof\'. The simplest and most common way to insulate a pitched roof is to add insulation above the horizontal ceiling of the top floor. If the top floor is open to the rafters and is used as habitable accommodation then insulation will need to be provided at rafter level.