Or the colon can replace the slash as in 2 12 or 7 12.
Shallow roof pitch solutions.
Pitch is the term used to describe the angle slope or slant of your roof.
Granular coated tiles are only suitable for pitches above 17 5.
Rafter ties and shallow pitch roofs framing.
Roof pitch designations are comprised of two numbers indicating a ratio.
A 2 12 roof slope falls on the shallow end which means you ll need to choose your roofing material carefully.
The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.
However from the wind uplift mitigation perspective a 7 12 roof slope can be considered as a two story building due to the higher overall steepness and profile of the roof.
A roof slope of 7 12 is also good and can provide the additional benefit of helping minimize the effects of wind driven rain.
To resist thrust the irc calls for a structural ridge required for any roof with a pitch less than 3 12 or for each pair of rafters to be securely connected to each other by a continuous ceiling joist r802 3 2006 irc.
If your home has a shallow roof pitch you ll find that your options are fewer.
Good roofing choices will make the difference between a watertight roof and one that quickly fails.
Roof pitch defined and explained.
Q a rafter ties and shallow pitch roofs.
For the smaller residential low slope roofing applications such as garage and porch transitions certainteed offers an excellent solution in our flintlastic sa self adhering sbs modified bitumen roofing system.