How To Insulate A Pitched Garage Roof

If the existing roof of the garage is pitched or if you are intending to build a space above the garage with a pitched roof then we suggest you look at our page on pitched roof insulation which covers this area in a bit more detail.

How to insulate a pitched garage roof. One of my main considerations when insulating a garage roof is ventilation. Although there is a myriad of different roof types the most important aspect where insulation is concerned is flat or pitched. Firstly is the choice of insulation material. Pitched roofs are fairly simple to insulate and involve the same process as insulating the loft in your main house.

Types of garage roof pitched or flat. Insulating the ceiling is the most important part of the garage because heat rises and escapes through the roof. The space created above the garage would also have to be fully insulated in a similar fashion to the garage. The first decision is whether to insulate a pitched roof at ceiling or rafter level.

As there s no insulation below rafters headroom is maximised creating more useable space. Most garages have flat roofs and despite the name none of them are perfectly flat. Poor ventilation which can lead to water vapour permeating the internal finishes and insulation is a cause of many garage problems. 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.

A full guide on how to do this yourself can be found here. How to insulate a roof. If making a warm pitched roof construction you should opt for some type of rigid insulation boards such as kingspan k7 pitched roof board orcelotex xr4000 pir insulation boards which can be installed both between and over the rafters and offers a level of fire resistance if important and. Insulating a garage door can be more involved than insulating the walls and ceiling.

The current trend is for a warm roof where insulation is installed between the rafters thereby keeping the roof timbers warm. Similar to wearing a hat in the winter you need to make sure the top of the garage is protected to trap the heat in. This approach can be used to create an unventilated roof structure helping to keep out unwanted drafts. Once you have decided to insulate your garage roof there are various things to consider pitfalls to avoid and best practices to follow to get the job done perfectly.