It must provide adequate protection against the elements keeping the buildings structure and interior dry.
Flat roof extension construction.
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Unlike traditional building roofs which angle steeply down to collect and deal with water in a guttering system a flat roof extension simply uses a flat roof with a slight angle that can also deal with drainage and water control well.
They are common on extensions garages and commercial buildings.
To use a pitched roof in these circumstances would mean adding roof valleys or box gutters and make draining the roof difficult and expensive.
There are several methods and materials for the design of the exterior surface of a warm or cold flat roof.
Flat roofs are an often lower cost and easier to install alternative to traditional pitched roofs.
It is the standard method employed on flat roofed extensions but it is rarely used for new builds today.
Flat roof structures offer numerous advantages from design and material options through to cost.
Usually however a flat roof is constructed when an extension butts up to an existing building.
Of course you don t need to live in a modern house to deal with a flat roof.
Moreover the costs of a flat roof extension today are typically lower than for a pitched roof.
What is a flat roof extension.
The 3 most common materials used for flat roof construction.
Flat roof construction how to build a flat roof roofing kits design and planning advice.
Flat roof types.
The flat roof extension is more on trend than it once was and is free of the dreaded leaks that haunted this type of structure in the past.
As opposed to old built up felt roofing with joins new single ply waterproof membranes are now most commonly used.
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.
In general a warm roof is preferable from a construction angle but it does lead to a higher roof profile which isn t always acceptable.
Hot tar and gravel.
Sep 26 2019 explore sm jones architecture ltd s board flat roof extensions on pinterest.
Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.
For that reason cold flat roof construction needs to keep in mind the need for unblocked airflow.
A flat roof must be strong durable and stable throughout its lifetime.
When it comes to flat roof extensions the name gives away a lot.
