There is no common formula for pitching a roof in most locations homeowners can choose a pitch that works for them when remodeling or building a house from the ground up.
How to re pitch a flat roof.
Remove rafters or trusses one at a time.
Determine the roof span and pitch.
Tear off the old materials and apply roof sheathing.
Open the epdm square vertically along the length of the roof.
Use a pry bar to pull nails loose then remove them with a crow bar or.
How to make a flat roof have a pitch general steps step 1.
The traditional metal roof types such as 5v crimp shown above and corrugated are rated by the manufacturers for use down to a 3 12 pitch three inches of vertical rise for every foot of horizontal run.
The process for converting a flat roof into a pitched roof depends on your individual structure and your individual needs there is no one size fits all option.
Rooftops can be either flat or pitched at a variety of angles.
The pitch of a roof is the angle at which it is built compared to the flat foundation of the house.
Flat roofs also don t last as long.
Adding pitch to a flat roof.
Step 2 calculate material prices.
Depending on the climate your flat roof will only last between 15 and 30 years if well maintained.
This new roof with a higher pitch can be accomplished with premade roof trusses and typical asphalt shingles.
Step 5 replace roofing.
Use prefabricated trusses to put a new pitch.
Install the new material.
Change the pitch on an existing sloped roof by removing the old roof and framing.
However flat roofs require much more aggressive and consistent maintenance than a pitched roof.
Step 3 prepare the materials.
Step 4 re sheath roof.
Step 1 calculate the roof span.
Flip the topmost piece of the epdm material downward across the length of the roof.
Take off shingles or other roof.
If you used long lasting materials on your pitched roof you could expect it to last much longer.
Lay down the square folded epdm material in the center of your flat roof.
Replacing a roof can be expensive but if a roof contains only a small slope it s possible to raise the roof pitch of a house by building a roof over the old one.