Or the colon can replace the slash as in 2 12 or 7 12.
Shallow roof pitch solutions.
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.
Good roofing choices will make the difference between a watertight roof and one that quickly fails.
Roof pitch defined and explained.
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.
Pitch is the term used to describe the angle slope or slant of your roof.
A 2 12 roof slope falls on the shallow end which means you ll need to choose your roofing material carefully.
Q a rafter ties and shallow pitch roofs.
The best roofs for a 2 12 pitch.
Marley mendip this tile can be laid to a minimum of 15 provided that the headlap is 100mm and you choose a smooth finish tile.
Rafter ties and shallow pitch roofs framing.
Granular coated tiles are only suitable for pitches above 17 5.
A roof slope of 7 12 is also good and can provide the additional benefit of helping minimize the effects of wind driven rain.
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.