Roof Slope 1 4 Over 12 Architectural Note

Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter.

Roof slope 1 4 over 12 architectural note.

If the rise is 4 feet over a 24 foot span then the roof pitch is 1 to 6 is expressed as a ratio and in inches per foot. 0 pitch 1 00x the roof area. I e 4 inches of rise per 12 inches one foot of run. A wood shingle is cut whereas a shake is split by.

Low slope roofs are from 0 to 3 12 in pitch. If the rise is 6 inches for every 12 inches of run then the roof slope is 6 in 12 the slope can be expressed numerically as a ratio. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. For example if you measure 4 inches the pitch of your roof is 4 12.

A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope. However you can only use this pitch with built up roofing or specialized synthetic roofing. However roof pitch is technically measured and defined differently and will not be discussed here. 1 pitch 1 01 2 pitch 1 02 3 pitch 1 03 4 pitch 1 05 5 pitch 1 085 6 pitch 1 12 7 pitch 1 16 8 pitch 1 21 9 pitch 1 25 10 pitch 1 31 11 pitch 1 36 12 pitch 1 42.

Slopes greater than 18 12 are found on a frame roofs and some mansard style. Roof slopes are most commonly defined by the rise over run ratio. Most roof s have a pitch in the 4 12 to 9 12 range. 4 12 is the incline of the roof expressed as.

See low slope roofing. If a roof slope rises say 4 inches when measured 12 inches along the bottom of a horizontal roof truss the roof slope is said to be 4 12. 1 12 roof pitch angle 4 76 degrees. Note the roof material.

The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. Note that roof pitch is sometimes used in parallel with roof slope. You can go by the measurements taken by walking the roof. A 4 in 12 slope can be expressed as the ratio of.

This will give you the rise over run or pitch. If asphalt shingles are to be installed on a low slope roof special steps are required to avoid short roof life and roof leaks. Since this is a flat roof or nearly flat roof. You can measure the roof slope on the bottom side.

The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run.