Minimum Slope For Roof Tiles

The irc recommends a minimum pitch of 2 5 12 for these materials.

Minimum slope for roof tiles.

Clay tiles are colorfast which means their tints improve rather than fade over time. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Minimum requirements are nominal 1 inch for board sheathing or 15 32 for plywood and other approved panel. Concrete is long lasting with a minimum lifespan of 50 years depending on climate.

The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. 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. Metal roof panels minimum roof slope roof pitch r905 10 2. Ratios from that minimum up to 4 12 which are considered low pitch require double underlayment.

Asphalt shingles continue to be the most widely installed roof covering option in north america. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope. 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.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.