Pitched Roof Extension Minimum Angle

The minimum roof pitches degrees that are required range between 15 to 22 degrees using the clay range of tiles and if the slate tiles are to be used then this range extends to 22 5 degrees.

Pitched roof extension minimum angle.

The minimum pitch for each product can be found in the table below and in the product brochure or within the products pages. Express roof pitch as the ratio of the amount of the vertical rise of a roof or rise over the. Some tiles and slates incorporate design features allowing them to be laid at a low minimum pitch. Building a pitched roof kitchen extension is as simple as building any other pitched roof extension.

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 requirements for an asphalt shingles roof are contained in the international building code. Although there s isn t any standard pitch of a roof used on all kinds of sloped roofs you can determine the range of pitches by using a roof angle calculator and by considering factors like the local climate and roofing materials.

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.