Why roof lantern detailing matters
More daylight from above
A roof lantern can bring natural light into extensions, kitchens, dining areas and other rooms beneath a flat roof.
Watertight around every edge
Careful upstands, flashing and membrane detailing help keep one of the roof's most important junctions properly protected.
Planned as part of the roof
Whether the lantern is being added during a new installation or incorporated into replacement work, we plan the surrounding flat roof around it.
Flat roofs with roof lanterns built around the details
A roof lantern can completely change the feel of a room below a flat roof, bringing daylight into spaces where ordinary windows may not be enough. But cutting an opening into a roof also creates additional junctions that need to be finished properly. The upstand, membrane, corners and drainage around the lantern all have an important job to do. Choosing A One Flat Roofs means those details are considered as part of the complete roofing system rather than treated as an afterthought. In Swansea, we can incorporate roof lanterns into our flat roof installations while making sure the surrounding covering is carefully prepared and weatherproofed.
Getting the roof and lantern junction right
Good roof lantern installation is about more than positioning the glazing. The surrounding flat roof needs suitable falls, a properly prepared opening and careful waterproof detailing where the roof covering meets the lantern upstand. Water should have a clear route away rather than collecting around vulnerable junctions. With A One Flat Roofs, we assess the roof layout and work the lantern into the wider roofing plan, paying close attention to corners, edges and adjoining materials. Whether it forms part of a new flat roof or a wider roof replacement, the aim is a clean finish above and more natural light below without compromising the roof's main job of keeping the weather outside. Contact us to discuss your roof and arrange an assessment.
Frequently asked questions
Can a roof lantern be fitted into a flat roof?
Yes, roof lanterns are commonly incorporated into suitable flat roofs, particularly over extensions, kitchens and open-plan living spaces. The opening and supporting upstand need to be properly planned, and the surrounding roof covering must be carefully weatherproofed. We can assess the roof and explain what is required for the proposed installation.
Can I add a roof lantern when replacing my flat roof?
A flat roof replacement can be a practical time to plan for a roof lantern because the existing covering is already being removed and the roof build-up can be assessed. The exact work required depends on the roof structure, lantern size and proposed position, so these points should be considered before installation begins.
How do you prevent leaks around a roof lantern?
The junction between the lantern and flat roof needs particularly careful detailing. A suitable upstand, properly fitted membrane and secure finishing around corners and edges all help keep water out. The roof should also drain effectively so rainwater is directed away instead of being allowed to sit around the lantern.