Minimum Pitch For Tiles Roof

The following tableprovides the minimum required allowable roof slope for each type of roofing material mentioned in the code.

Minimum pitch for tiles roof. Asphalt shingles require a minimum roof pitch of 2 12 or greater. Although the minimum roof pitch for residential homes may vary depending on city and state building codes. For example if you used a 24 inch level and your measurement was 12 inches the pitch in your roof is 6 in 12. Let us recap on the minimum roof pitch required for each type of roofing material.

Concrete is long lasting with a minimum lifespan of 50 years depending on climate. The minimum pitch for each product can be found in the table below and in the product brochure or within the products pages. However with modern roofing materials such as boral roofing tiles the minimum roof pitch can be as low as 15. Clay tiles are colorfast which means their tints improve rather than fade over time.

Underlayments play a key role in tile roofing since most tile roofs are not completely waterproof. Metal roof shingles require a minimum roof pitch of 3 12 or greater. At a minimum use a type ii no. Traditionally a minimum roof pitch of 20 was recommended in bs 5534 but modern tiles and slates have now been designed for applications as low as 15.

Both clay and concrete tile are available in many colors and are naturally weather resistant. The minimum roof slope allowed by code for any type of roofis in 12 applicable only to coal tar pitch roof systems. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater. Divide the results by the number of 12 inch segments in your level.

In traditional home construction it was not recommended to have a roof pitch lower than 20. Asphalt shingles continue to be the most widely installed roof covering option in north america. 43 felt lapped 2 inches on horizontal joints and 6 inches at end laps. 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.

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. The irc recommends a minimum pitch of 2 5 12 for these materials. Some tiles and slates incorporate design features allowing them to be laid at a low minimum pitch. Because of the long service life of tile a long lasting underlayment should be used as well.