As the name suggests flat roofs appear to be completely flat with no pitch.
Industrail flat roof structure.
This flat roof system is still used in some residential applications because of its affordability and fire resistance.
The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.
However they can also be installed on residential houses in both high and low rainfall areas.
Insulation and membrane position a vented air space is mandatory when using batt insulation in a flat roof.
B uilt up roofing bur most often used in commercial and industrial applications this flat roof system contains layers of waterproof membrane such as a treated fiberglass basemat tar and gravel to seal the flat roof surface.
If your roof rises 8 inches for every 12 inches of horizontal run your roof has a 8 in 12 pitch.
A flat roof s design is both efficient and economical.
However they do have a slight pitch to allow for water run off and drainage.
Flat roofs are nothing new nor are some of the proven materials that cover these often expansive roofs such as those found on factories warehouses big and small box stores apartment buildings large public structures and schools universities.
This very popular roof type is also among the best flat roof materials to install.
Any typical mall warehouse apartment building or school usually features a flat roof.
These roofs are generally used on industrial or commercial buildings.
A weather tight roof is basic in the preservation of a structure regardless of its age size or design.
They re simple in form and function and are a good example of the modernist principle of clean lines.
Flat roofs create long horizontal planes reminiscent of the broad horizon line seen often in nature.
Modern architecture has traditionally been characterized by flat roofs.
Flat roofs are a familiar sight throughout north america.
However metal roofs can be susceptible to leaks around the seams and roof edges.
However metal roofing has the longest lifespan lasting between 20 and 30 years.
For additional stability you can also use steel joists that are built into one or both of the walls.
This roof type is easier to install over large surfaces and is the most common choice for commercial industrial and institutional buildings.
This will give additional stability to the roof structure.
In the system that allows a building to work as a shelter the roof sheds the rain shades from the sun and buffers the weather.
During some periods in the history of architecture the roof imparts much of the architectural character.
Metal is an extremely durable material and is immune to cracks that affect single ply roofs.
If you use rigid polystyrene insulation the blue kind or a foamed in place closed cell type no air space is necessary as it is waterproof.
