There are several methods and materials for the design of the exterior surface of a warm or cold flat roof.
How to construct a flat roof with a roof lantern.
Adding a roof lantern and flooding a room with natural light can be a great way to make a room feel more spacious.
If you are adding a skylight to a flat roof you must decide on whether to construct your own upstand or purchase one from your rooflight supplier.
Put down your first sheet of plywood at the corner of one end of the roof.
Cutting the opening requires drilling a hole in the roof and cutting the opening with a circular saw.
The advantage of this market leading technology.
Our roof lanterns have a distinct and unique design that utilises the latest state of the art technology in structural silicone glazing.
Whether fitted as part of an orangery over a kitchen extension stairwell garden room or another application a prestige roof lantern will help to make any space brighter and more open.
All our roof lanterns shown on this website are designed to be fixed onto a kerb like detail which rises proud of the supporting flat roof assembly precisely at the open edge of the lantern aperture.
This solution allows you to combine as many modules of up to 4 square metres as you want which equals most lantern sizes.
You could for example combine three modules of 3000mm x 1000mm which equals 9 square meter of clear sky view.
So any timber joists that are used need to be strong enough to support this weight.
Cut back the roofing.
Old asbestos roofs are often replaced with flat roofs.
Sizes of joists needed for flat roof construction.
Roof lanterns are an alternative to flat glass rooflights the glass is angled to a pitch creating two triangular end pieces and two trapezoidal long sides which create the distinctive roof lantern shape.
The job of an upstand sometimes referred to as a kerb is to lift the glass element of your rooflight off of the roof s surface and is required by building regulations for safety and weathering.
As you may imagine there is a fair amount of weight involved here in terms of boards felt etc.
Whether you are wanting to flood a room with natural light or star gaze on clear night from the comfort of your sofa a roof lantern would be the perfect addition to any single story extension or bungalow with a flat roof.
If you are replacing a roof lantern you ll need to remove the old one.
For that reason cold flat roof construction needs to keep in mind the need for unblocked airflow.
How to install a roof lantern on a flat roof.
Make sure it s lying horizontally across the exposed rafters and that the edges are flush with the edges of the end rafters.
Cut and frame the opening.
Drive a nail into each corner of the plywood to hold it in place temporarily.
Roof lanterns are a great way of bringing natural light into a room where wall space may be limited.
If you are installing a new roof lantern you will need to cut the roof as required.
Hot tar and gravel.
