Shallow Roof Pitch Solutions
If your home has a shallow roof pitch you ll find that your options are fewer.
Shallow roof pitch solutions. 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. Roof pitch designations are comprised of two numbers indicating a ratio. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. Roof pitch defined and explained.
Pitch is the term used to describe the angle slope or slant of your roof. 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. Granular coated tiles are only suitable for pitches above 17 5. 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.
The following roof tiles can be used on roofs with a pitch of no less than 15. 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. Rafter ties and shallow pitch roofs framing.
A roof slope of 7 12 is also good and can provide the additional benefit of helping minimize the effects of wind driven rain. Or the colon can replace the slash as in 2 12 or 7 12.