Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.
How to construct a flat roof.
There are several methods and materials for the design of the exterior surface of a warm or cold flat roof.
Old asbestos roofs are often replaced with flat roofs.
To build a roof start by deciding whether you want to put up a flat or pitched roof on your building.
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.
As with the construction of any type of roofing system it s crucial to understand the correct process and essential criteria involved in flat roofing construction.
For that reason cold flat roof construction needs to keep in mind the need for unblocked airflow.
A flat garage roof is far easier to build than one with a pitch.
There are three main choices.
Purchase your materials including prefabricated trusses plywood covering and roof tiles.
The reason we included this section is to give you a good idea of how to build a sloped roof over a flat roof.
How to make a flat roof have a pitch general steps obviously you shouldn t do the work all by yourself.
That way you know the process.
How to build a flat roof.
As you may imagine there is a fair amount of weight involved here in terms of boards felt etc.
The cheapest and simplest solution is to construct a warm roof.
Of course you don t need to live in a modern house to deal with a flat roof.
But today there are various modern systems available that make horizontal coverings a thermally efficient versatile and attractive option that will protect your home in the long term.
Sizes of joists needed for flat roof construction.
Cheaper to construct than pitched roofs and need less material to cover the same span.
You can also use the knowledge you gain to evaluate prospective roofing contractors.
This is a good diy weekend project requiring only a few basic materials.
So any timber joists that are used need to be strong enough to support this weight.
Taking into consideration that you will be working at some height it is advisable to use at least two ladders and to have a helper as lifting the timber into place will take two sets of arms.
The 3 most common materials used for flat roof construction.
Flat versus pitched technically a flat.
Next measure the area and make calculations so you know how much of your chosen materials to buy.
Materials for felting a flat roof.
While many will contact a professional installation company to complete the job there are others who will feel confident enough in their own ability to install a flat roof onto the structure.
In the past low quality insulation inadequate materials and poor workmanship left flat roofs with a reputation for water pooling and substandard performance.
