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F.A.Q

By insulating between and over the rafters you create a warm roof structure. This is probably the best way to go about insulating pitched roofs. It will soundproof roofs and also restrict heat loss, thus saving energy and money.

You can use insulation slabs like RWA45, RS45, Flexi and others to insulate between rafters. You can also use Actis Hybris for between rafter insulation.

You can use foam insulation boards like PIR, XPS or foil insulation rolls to insulate pitched roofs over rafters.

A pitched roof should have a U value of 0.18 W/m2 or less, depending on the circumstances, according to UK building rules.

On a warm roof, insulation is typically applied straight on top of the wooden deck, steel or concrete. A vapour barrier is installed beneath the insulation – toward the deck – to ensure that moisture does not seep through the structure.

A pitched roof can be insulated between rafters using insulation slabs or Actis Hybris. Over rafter, insulation can be carried out using PIR boards or other insulation boards. Installing insulation is not a DIY job unless you are certified. Contact insulation installers for the job. For insights into the installation process, you can refer to this video.

Yes. You can insulate a pitched roof in between the rafter, over or under the rafters. Usually, two of the three techniques are used in combination

If you plan on using your loft space as an office, or for any other purposes other than simply storage, it is worth insulating the pitched roofs. By installing pitched roof insulation, you save the heat otherwise lost through the roof surface.

Generally, warm roofs do not require ventilation as they are designed to prevent any moisture from forming on cold surfaces in roof construction. However, you should employ a Vapour Control Layer or vapour barrier on the warm side of the insulation.

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