roof pitch


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Old 10-27-06, 03:46 AM
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roof pitch

i know how to find a roof pitch on an existing roof but how do i determine how high to put the center board to get a 4 or 5/12 pitch
 
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Old 10-27-06, 08:17 AM
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Roof Pitch

Give us the horizontal distance from the outside of the top plate to the center and we can give you a measurement.
 
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Old 10-27-06, 08:56 AM
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Id have trusses made. Cost less then to do it your self
 
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Old 10-28-06, 03:51 AM
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roof piech

Originally Posted by Wirepuller38
Give us the horizontal distance from the outside of the top plate to the center and we can give you a measurement.
the distance is nine feet,the building is ezactly 18x18 with 8 feet to the top of the sill
 
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Old 10-28-06, 04:58 AM
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Roof Pitch

This is easy. A 4/12 pitch means the height is 1/3 of the horizontal distance. You need the top of the ridge board to be 3 feet above the top of the rafter at the point where the rafter sets on the top plate. ( 3 ft. plus the thickness of the "birds mouth")

For a 5/12 pitch the height difference changes from 36 inches to 45 inches. (108/12 x 5 = 45). Hope this helps. Cut a trial run out of scrap material, temporarily nail it in place, and check the pitch. Hope this helps. Good luck.
 
 

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