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.
Minimum slope for tiled roof uk.
Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater.
Getting the right pitch for the roof will also play a big role in it performs long term.
Express the slope of a metal roof by a ratio which indicates the pitch of the roof.
The irc recommends a minimum pitch of 2 5 12 for these materials.
Ratios from that minimum up to 4 12 which are considered low pitch require double underlayment.
There are however some instances when the slope adopted can go below the recommended minimum.
What is the minimum pitch for a tiled roof.
Manufactured from 100 recycled materials eco slate is available in grey and old world red giving you more options for your low pitch roof.
Set out key steps if you want to use a low pitch slate roof.
Steps to specifying a low pitch slate roof.
Wood shingles require a minimum roof pitch of 3 12 or greater.
Confirm the exposure level of the site using our annual driving rain index map.
Slate and slate type shingles require a minimum roof pitch of 4 12 or greater.
You need to consider the slope requirements of each panel to determine this minimum slope.
All tiles and slates have a minimum roof pitch which is set out in order to protect the roof from water penetration.
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.
Just like with the other roofing materials manufactures will always give a recommendation for the minimum pitch for tiled roofs.
Clay tiles are colorfast which means their tints improve rather than fade over time.
Concrete is long lasting with a minimum lifespan of 50 years depending on climate.
Minimum pitch for tiled roof.
The pitch is crucial in minimising the amount of time it takes for water and debris to clear from the roof.
There are some general rules that can be applied to different types of tiles.
To enable compliance with the requirements of the building regulations to be demonstrated full details of the new roof will be needed including.
Manufactured in the uk with the ability to tile a roof down to 10 lightweight.
If it is severe very severe a minimum 17 5 pitch is recommended.
The minimum pitch for each product can be found in the table below and in the product brochure or within the products pages some tiles and slates incorporate design features allowing them to be laid at a low minimum pitch.
For a 15 pitch the exposure level of site must be sheltered or moderate.
Flat roof this usually consists of felting which has a slight fall to allow rain water to drain off.
The profile is the shape taken by the sheets when you bend them to form panels.
Built up roofs require a minimum roof pitch of 1 4 12 or greater.
The minimum slope of a roof depends on the roof s profile.
