How To Install Pitched Roof Insulation

As there s no insulation below rafters headroom is maximised creating more useable space.

How to install pitched roof insulation.

The best way to insulate a pitched roof is by installing insulation between and above the rafters. Rigid foam board installation in the case of a cathedral ceiling involves installing three different layers that are each 1 5 inches thick according to the. The decision on which method to use is usually dependent on the sarking or underlay. Firstly just to make it clear when we are talking about rafter level we mean the timbers that support the pitched roof.

An efficient room in a roof in a new build property where over rafter insulation is not desirable. Its versatility is the key to its popularity whether being used to achieve. This approach can be used to create an unventilated roof structure helping to keep out unwanted drafts. Arguably the most popular pitched roof solution installing insulation between and under the rafters uses the depth of the structural timbers to best effect.

Pir insulation boards such as quinn therm qr roof insulation are widely used for insulating pitched roofs using either the warm roof or cold roof methods thanks to their excellent thermal performance ease of handling and installation their strength and durability. This will help to avoid your roof space becoming. Where the roof joins the ceiling make sure the insulation covers the top plate but is not in contact with the roof. How to install pitched roof insulation beneath and between the rafters insulation can be installed between the rafters using a ventilated roof construction or an un ventilated roof construction.

When installing insulation in a roof eave i e. For a warm roof solution you will need to install insulation in the plane of the roof pitch that is immediately below the sloping roof. If you decided to use a rigid foam board to help insulate your cathedral ceiling you would install the board on top of the roof sheathing and underneath the plywood at the top of the roof. Before fitting any insulation to the sides of a pitched roof space any repairs to the roof should be completed once the insulation is in place it will be harder to spot any leaks inside the roof and any leaks will soak the insulation itself.

It is important to maintain a 20mm gap between the roofing substrate and the insulation.