There is nothing like insulating the roof to improve the energy efficiency of a home! Conventionally, the insulation of a pitched roof is installed from the inside. But insulation from the outside or ‘sarking’ has its advantages.
With interior insulation, the entire space between the rafters is filled with insulating material and then covered with a plasterboard or wood panel finish that is then painted or wallpapered.
As its name suggests, external insulation is placed outside the house:
Even though it is more expensive, there are several reasons why insulation from the outside may be preferred to insulation from the inside:
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