Installing a roof window is technically not so hard to do... and it can all be done from within the roof space, with no need for external scaffolding.

The installation always depends on the particular situation - is it an installation in a new house with no roof and no internal walls - or is it an installation in an already inhabited attic? Is it a house with tiles or is it a house with 100 year old slate?

The below installation instructions are split into groups, so you can use the specific parts of the instructions, which are relevant for your particular project.

Always make sure to use safety equpment when using power tools, and keep yourself safe at all times!