While that s the easiest route it s certainly not your only option.
Making a flat roof pitched.
Flat roofs operate with the same basic principle but of course their lower angles mean that gravity isn t quite as effective in shedding water rapidly.
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.
This guide has been submitted by one of the sites members and so it should help to understand what is involved.
If it is determined that your building can support a pitched roof the next step will be the removal of all of your roofing materials and the main roofing structure.
Additional valleys angles and gables can be built into converted roofs as well but adding these elements may affect your project.
Pitch ratios range from 2 12 to 12 12.
Pitched roofs have peaks and valleys that direct water downward in very specific directions.
Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.
Anyone who wants to know how to make a flat roof have a pitch would somewhat assume that the job is tedious.
Most homeowners choose to convert a flat roof to a pitched one using a simple trussed roof with two angled planes.
A low pitched roof would be 2 12 and it means that over the space of 12 inches the roof only rises two inches.
The pitch of a roof is the rise the vertical angle of the roof over the run the horizontal measurement.
Of course you don t need to live in a modern house to deal with a flat roof.
Adding trusses to a flat roof alone is time consuming not to mention costly.
Take one look at a pitched roof versus a flat roof and the structural differences are quite obvious.
A 900 square foot flat roof in the san francisco area made of concrete tiles costs.
Pitched roofs require more manpower and time to install especially when making a major structural conversion.
According to improve net s online roofing calculator a flat roof is significantly cheaper than a pitched roof.