Flat roof definition ?

NUTLEY BOY

From an architectural and or a planning perspective is there a technical definition of a flat roof.

Specifically, I was wondering if there was any particular angle of pitch above or below which a roof becomes defined as flat ?

sydthebeat

NUTLEY BOY wrote: »

From an architectural and or a planning perspective is there a technical definition of a flat roof.

Specifically, I was wondering if there was any particular angle of pitch above or below which a roof becomes defined as flat ?

architecturally, that point is usually 10 degrees or under, as defined in BS 6229:2003

planning wise, the roof covering usually is the determining factor, as slates / tiles cant be used under 15 degrees

why is it an issue? the eaves restriction usually has a big factor on planning exemptions

NUTLEY BOY

sydthebeat wrote: »

architecturally, that point is usually 10 degrees or under, as defined in BS 6229:2003

planning wise, the roof covering usually is the determining factor, as slates / tiles cant be used under 15 degrees

why is it an issue? the eaves restriction usually has a big factor on planning exemptions

Thanks for that information - it is helpful.

The issue arose recently with a household insurer that did not want to cover a flat roof. Most of them are alright with flat roofs but some are not.

I was just curious to know, in technical terms, where the tipping point lay on the issue of whether or not a roof is flat.

Metric Tensor

The insurer will definitely have that written down somewhere I their documentation.

If you're installing one now and worried about same you could ring your insurer to ask.