How To Insulate A Roof Against Heat

This allows a lot of the heat to be reflected and dissipated before it even gets to the roof insulation. If 180mm is to be installed then 100mm board might be introduced between the rafters there has to be a minimum 25mm air gap between the insulation and the underside of the tiles or slates with an 80mm board running across the rafters. The easiest unless you re having a new roof put on the house and most effective way to boost the insulation in your home is to insulate the attic.

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Think of how much cooler it is under a canopy or tree than in the direct sun.

How to insulate a roof against heat.

This usually involves attaching a block of polystyrene insulation to its upper side and ensuring any gaps around the side of it are sealed by applying. Another best practice is to have a vented air cavity directly under the roof. Many homes have at least some access to this space and because of the size attics can hold quite a bit of insulation. Don t forget to insulate the loft hatch.

Like a canopy a vented roof basically shades the rest of the house. With a warm roof the usual process is to split the insulation into two layers.

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