Roof Slope For Shingles 2 12

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Roof slope for shingles 2 12.

With respect to shingle application roof slopes from 2 12 to less than 4 12 18 5 are called low slope roofs while roof slopes of 4 12 or greater are called normal or standard slopes. Asphalt shingles should never be applied to roof slopes below 2 12 2 of vertical rise for every 12 of horizontal run or 9 5. That means the roof doesn t shed water as easily as steeper roofs which is why choosing the right type of roofing material is so important. For example if it is a very low slope water including snowmelt or.

The minimum requirement is 2 12. Minimum required slope x in 12 minimum required slope degrees asphalt shingles. Simply put it s a shallow roof. This means for every 12 horizontal units the roof must rise a minimum of 3 vertical units.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The cabo one and two family dwelling code permits the installation of asphalt shingles on roofs with a slope as low as 2 12 if the shingles are double coverage self sealing versions. High and low pitch examples. 18 43 asphalt shingles with special underlayment requirements 2 in 12.

9 46 built up roof asphalt. Metal roof shingles can only be installed on roof slopes of 3 12 or greater 25 slope. Asphalt shingles continue to be the most widely installed roof covering option in north america. Why is 2 12 the minimum.

Shingles of all types need to have a slope to function properly. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. Shingles that are not self sealing must be hand sealed with asphalt roofing cement. The roof pitch between 2 12 and 4 12 is considered as a low pitch roof so shingles can be installed in the roof slope between 2 12 and 4 12.

Minimum required roof slope for roofing materials. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. Considering the roof slope requirement is important.

For every 12 horizontal feet the roof changes 8 feet in vertical height. The minimum slope for an asphalt shingle roof is 2 12. A shingle roof like this north dallas garage in the photo above may have a failure no matter how good a job the installer did. Roofing material or system.

That works out to about nine degrees if that works better for you. What is the minimum slope for an asphalt shingle roof. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep.