Construction Warm Flat Roof Fascia Detail

Construction studies drawing detail showing how to draw a flat roof warm deck construction detail to a scale of 1 10 with a short introduction highlighting t.

Construction warm flat roof fascia detail.

Hot tar and gravel. It s always worth considering all flat roof construction details as this way you can make an informed decision before proceeding. They can be built up from profiled metal decks as the insulation selected would provide enough rigidity to span the open sections of such decks. It must provide adequate protection against the elements keeping the buildings structure and interior dry.

Say 150 joists and 152 beam which gives a fascia about 450 deep rather ungainly. There are several methods and materials for the design of the exterior surface of a warm or cold flat roof. For that reason cold flat roof construction needs to keep in mind the need for unblocked airflow. Front fascia flat roof detail steven dickinson 2018 08 09t17 00 34 01 00 in this video our principal surveyor steven dickinson explains problems with insulating a roof using the warm and cold roof construction methods.

Your sketches seem to show the insulation proportionately thinner than it needs to be. A note to consider before construction. Those details show the chief drawback of the warm roof the deep fascia. This article has covered flat roofs in detail from how to frame a flat roof and the construction of a flat roof joist and other timber flat roof construction details to troubleshooting and carrying out small repairs.

A flat roof must be strong durable and stable throughout its lifetime. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less. If insulation is installed below the flat roof deck this is called a cold roof. Others would treat even steeper pitches as flat roofs.

Doing it the builder s way you are looking at 125 kingspan. The definition of a flat roof according to bs 6229 is having a pitch less than 10 o to the horizontal however some in the industry would consider up to 15 o as their definition of a flat roof. From there the flat roof system you choose will determine the materials you apply. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off.

Consider geography budget and use for the roof to determine the best option. In an earlier video you showed how to seal and insulate behind the fascia of a warm roof so that you avoid condensation on the fascia and even more importantly avoid cold air circulating between a warm roof and the ceiling below which can completely defeat the aim of a warm roof.