Minimum Angle For Tiled Roof

Although the minimum roof pitch for residential homes may vary depending on city and state building codes.

Minimum angle for tiled roof.

However with modern roofing materials such as boral roofing tiles the minimum roof pitch can be as low as 15. The lowest any tile can usually go is about 15 degrees but some must be steeper. Some tiles and slates incorporate design features allowing them to be laid at a low minimum pitch. Low pitches are often found on extensions to properties where the angle of the roof is limited due to obstructions such as second floor windows.

This means for every 12 horizontal units the roof must rise a minimum of two and one half vertical units. Clay tiles are colorfast which means their tints improve rather than fade over time. You can also read more about the reasons for choosing low pitch tiles and the requirements in our blog. Concrete is long lasting with a minimum lifespan of 50 years depending on climate.

The irc recommends a minimum pitch of 2 5 12 for these materials. In traditional home construction it was not recommended to have a roof pitch lower than 20. Minimum roof slope roof pitch r905 3 2. Ratios from that minimum up to 4 12 which are considered low pitch require double underlayment.

It is uncommon to find a roof below 15 but for those very low pitch applications there are interlocking clay pantiles available suitable for use down to 12 5.