12 3 Pitch Roof

What would you do given the two choices below and why would you consider one to be better than the other.

12 3 pitch roof.

On the roof hold the level perfectly level and measure the height from the roof to the level 12 inches away from where the level touches the surface this will be the rise. You ll need a level that is 12 or longer and a tape measure. What is the standard pitch for a roof. There is no standard universal roof pitch roof pitch varies depending on culture climate style and available materials in the usa the range of standard pitches is anywhere between 4 12 and 9 12 in the uk the typical house has a pitch between 40 50 although 45 should be avoided.

The rafter length is 3 4 the span about 48. 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. This is a 3 12 roof down south with minimal snow. This will give you the rise over run or pitch.

The flat roofing materials most appropriate to these shallow sloped roofs include. Commonly used roof pitches were given names such as greek. Ice water shield lower 3 only in both. Image 1 12 to 12 12 roof pitch 7 12 pitch.

If this isn t practical then perform the same measurement on the underside of the roof. We included a roof pitch chart below the 7 12 example image and the calculator below that. Or 1 layer of no 30 felt with architectural shingles. Roof pitches with lower angles such as 1 12 up to 3 12 are found in more urban contemporary style houses and in industrial buildings and shacks.

On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length. Using pitch its footprint and basic geometry you can quickly and with a high degree of accuracy calculate the length of the gable sides. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. The rafters equal the span.

If a roof rises 3 in a length of 12 this is 3 12 roof pitch. Contemporary houses often have flat roofs which shouldn. 3 12 roof pitch angle 14 04 degrees. 2 layers no 15 felt with three tabs.

For example if you measure 4 inches the pitch of your roof is 4 12. Roof pitch degree table. The ridge height is 2 9ths to 1 3 the span an angle of 24 to 34. For example a 3 pitch or 3 in 12 pitch or 3 12 pitch all mean that the roof rises 3 inches for every 12 inches of it s horizontal run.