How To Construct A Flat Roof With A Roof Lantern

Old asbestos roofs are often replaced with flat roofs.

How to construct a flat roof with a roof lantern. There are several methods and materials for the design of the exterior surface of a warm or cold flat roof. Cut back the roofing. Cut and frame the opening. The 3 most common materials used for flat roof construction.

If durability is important to you then a flat roof is just the system for you. As you may imagine there is a fair amount of weight involved here in terms of boards felt etc. A flat roof is water resistant so you do not have to worry about water damage. 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.

It is easy to construct a flat roof so you do not have to worry about your contractors running into an issue with the project. Cutting the opening requires drilling a hole in the roof and cutting the opening with a circular saw. If you are installing a new roof lantern you will need to cut the roof as required. This kerb is called an upstand the outside face of which allows the flat roofs external surfacing to lap up and form a weather tight junction.

Sizes of joists needed for flat roof construction. If you are replacing a roof lantern you ll need to remove the old one. 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. How to install a roof lantern on a flat roof.

Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. Hot tar and gravel. Of course you don t need to live in a modern house to deal with a flat roof. 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.

For that reason cold flat roof construction needs to keep in mind the need for unblocked airflow. Flat roofs are durable. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.