Roof windows and Sun Tunnels are an easy and effective way to bring natural light into a habitable space where there is a pitched or flat roof. Natural daylight brings indoor spaces to life in ways that a simple lamp can’t, and can have a positive impact on health and wellbeing.

Technical information

It's vital you install your new roof window, skylight, dome or sun tunnel correctly to ensure it's waterproof, durable and effective.

Gaps between the window frame and rafter/trimmers should be filled with PIR insulation or proprietary insulation collars such as the Velux BDX (click here to see full installation instructions).

Sun tunnels are an easy and very effective way to bring natural light into a concealed space where natural light is not normally possible, such as hallways and bathrooms, reducing the need for artificial light. Sun tunnels can be installed on both pitched and flat roofs and help improve the daylighting within a home.

You can add a VELUX sun tunnel light tube anywhere there is 6m or less between your roof and ceiling.

Hints & Tips

Windows should be secured in place using supplied fixing tabs screwed to doubled up rafters and trimmers.

Ensure you have the correct flashing type to suit the chosen roof coverings.

When plasterboarding around the inside of the roof window, the plasterboard should not come into contact with the rafters/trimmers. Either PIR or, if the space is to small, multi foil insulation should be located between the two surfaces to stop cold bridging.

Sun tunnel collectors should be installed in a position that receives the largest quantity of direct sunlight.

Sun tunnel collectors should be installed in a position that receives the largest quantity of direct sunlight.

Consider whether you want top or bottom operation. The top control bar makes it convenient to open and close the window even with furniture placed underneath. The bottom handle allows you to open the window outwards and gives you an unobstructed view and feeling of extra space.

Manual or remote controlled roof window? If your roof window should be placed out-of-reach or if you want ultimate comfort, the remote controlled roof windows could be the answer. Remote Control windows generally come with a touch screen control pad so you can control the window and accessories - such as blinds and shutters - from anywhere in the house.

Concerned about uninvited guests? Security and burglary proof resistant windows are available, with reinforced construction with integrated additional locks.

One or more roof windows? Combining multiple windows dramatically changes a room and you extend the possibilities of daylight, fresh air and a fantastic view.

Will maintenance be difficult? Consider 'maintenance-free' Roof Windows, which typically feature a seamless, moulded, white polyurethane coating that protects the timber core. It is maintenance-free and waterproof making it perfect for rooms with high humidity such as bathrooms and kitchens, or when a clean, white design is wanted.