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Installation advice

We think it is relatively easy to install our roof windows as everything can be done from inside the property, however, ease of installation will always depend on your specific circumstances. Before you start the installation, there are a list of things that you need to take into consideration:

  • Are you installing your roof window into a new building?
  • Is this new build without a covered roof and without finished masonry?
  • Is it an established or inhabited house?
  • Does the roof have modern tiles or have you got a 100 year old slate roof?

We have organised these assembly instructions so that you can find exactly the right sections you need for your roof quickly. But should you have any concerns, you should seek the advice and assistance of a professional roofer because incorrect roofing and building work can affect the stability of the roof.

We can also advise you about the way to attach a snow guard to your roof window to avoid possible damage from snow.

Choose your product first:

 
Roof window installation sequences

Internal preparation

Prepare tools

Prepare tools

Before starting to install your roof window, make sure you have the relevant safety equipment and correct tools to hand. It will make a big difference!

Measuring

Measuring

Once inside the roof space, you may find that your rafters are covered in plaster board or other covering. If this is the case it is important to establish the correct place in which to make a hole. By measuring from an external wall, you will be able to accurately determine the position of the window in relation to the outside.

Marking out

Marking out

Once an approximate position has been determined, it should be marked out accordingly.

Pilot hole

Pilot hole

A pilot hole should be cut out and removed to allow for more accurate measurement.

Locate rafters

Locate rafters

By inserting a rule either side of the pilot hole, the rafters can be located and marked out.

Rafter edge

Rafter edge

It is useful to work from the inside edge of a rafter, so as to minimise unnecessary framing out of the window.

Removing insulation

Removing insulation

When removing insulation, ensure that you take appropriate precautions by wearing a safety mask and, if necessary, goggles.

Removing a rafter

Removing a rafter

If it is necessary to remove a rafter, it is important that you consider the structural implications of doing so. If you are uncertain, we recommend you seek professional advice before proceeding further.

The bigger picture

The bigger picture

It is better to remove the surrounding area of boarding so that you can see the big picture.

Support below and above

Support below

Be sure to support the area below where you are cutting the rafter.

Support above

... and secure support beneath the top of the rafter.

Cutting the rafter

Cutting the rafter

You can then mark out, cut and remove the timbers.

Cutting the rafter
Cutting the rafter
Framing out

Framing out

Frame out the prospective opening to the correct height and width.

Don't forget

Don't forget

... to allow enough height for the reveals to splay back at the correct angle.

Step 16