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.
Shallowest pitch for tiled roof.
Shallow pitches are generally cheaper to construct with savings in both timber and tiling.
Modern tiles permit shallow pitch but some of the older traditional coverings such as hand made clay tiles require quite steep slopes to ensure rain does not penetrate the roof covering.
All of the low pitch roof tiles offered in this range of products can be used down to 10 with anything less than 10 being considered a flat roof.
To calculate roof pitch take the lowest point of the roof and measure the amount of rise for every 12 inches of horizontal movement toward the highest point.
Some concrete based tiles will go down to 15 and a few will even cope well with being laid on a 12 5 pitch.
When looking at metal roofing panel you will need to.
A handy roof slope estimator can help you determine if your roof slope is likely too low for shingles.
3 12 1 2 12 and 1 4 12.
A low pitched roof is easier to put up and maintain but may show very little of its material at ground level.
4 12 to 20 12 pitches.
If you are looking for roof tiles designed specifically for low pitch shallow roofs then your choice is very limited.
Low sloped roof shingle installation if 4 12 and above is normal and 2 12 is minimum what about properties with roofs in between the two such as a 3 12 pitched roof.
The most common slopes are.
For example a roof that rises 3 inches for every 12 inches has a pitch of 3 12.
Metal roof slope is expressed by a ratio indicating the roof pitch which notes the vertical rise of the roof in inches for every 12 inches the roof runs horizontally in other words dividing the vertical rise and its horizontal span.
Clay or cement tiles can be used on a wide range of roof pitches.
For pitches of 2 5 12 up to 4 12 the roof requires double underlayment.
The majority of north american residential roofs have historically been constructed with a slope between about 4 12 and 9 12.
Minimum pitch for tiled roofs pitched roofs are often considered low pitch when they re between 10 and 35.
Low pitch roof slates.
Slopes above 19 12 are not recommended since tiles on very steep roofs can rattle.
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.
