Fitting Roof Insulation Foil

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Fitting roof insulation foil.

It is always recommended to fit a film to clear glass conservatory roofs. Foil insulation underlayment is recommended under a metal roof and in most cases the shiny side should be facing up but there s a catch. A guide for installing foil insulation over the rafters it s up to you whether you want to apply the foil insulation on the rafters in a horizontal or vertical manner. Importantly it allows full reflection of radiant energy without any barrier.

Reflective foil insulation installation on a roof is usually done in the ceiling attics or other spaces that separate the roof from the ceiling. The process is more tricky than installing foil insulation during the construction of a property but can be undertaken if need be. Reflective foil insulation is made from layers of aluminium foil surrounding a wadding or layer of wool material. Ensure overlaps are fully taped and sealed using thermaseal foil joining tape.

It is easily cut and placed and reflects heat rather than absorbing it. Superquilt can be easily cut using multifoil scissors or a cutting knife both available in our multifoil fitting kit. We would recommend going for one with plenty of layers and some heft to it as the thinner ones will not. The materials used to insulate under the roof include batts of mineral or glass wool insulation held in place by battens of wood attached to and across the rafters alternatively polystyrene.

Foil insulation is worth considering if you have restricted space in your loft or roof space that means regular insulation is not viable. If your roof is poly carbonate or opaque there is no need to fit a film first unless you do not want the foil to be seen. How to install foil insulation on roof. Usually reflective foil is about 25mm thick and gives a very good u value for its relative thickness.

If you choose the former we recommend you start out from the bottom and work your way up by ensuring the insulation overlaps at each junction it meets. Ensure all superquilt insulation joints are overlapped by min 50mm.