Minimum Angle For Pitched Roof Extension

Some tiles and slates incorporate design features allowing them to be laid at a low minimum pitch.

Minimum angle for pitched roof extension.

With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs. 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. People think that it is not possible to construct a pitched roof kitchen extension. Minimum roof pitch is the lowest angle at which a roof can be designed so the roof covering remains watertight.

The minimum pitch for each product can be found in the table below and in the product brochure or within the products pages. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. But since there is still a wide variety of slate roofing systems there are occasions when the minimum pitch can go down to as low as 15 0 depending on the uniqueness of the roof. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

The roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Asphalt shingles continue to be the most widely installed roof covering option in north america. Low pitches are often found on extensions to properties where the angle of the roof is limited due to obstructions such as.

What does minimum roof pitch mean.