How big before a gutter is required?

[RichA]

We are adding a square bay window (with a flatish roof). It is approx 2.4m x 0.65m (incl overhang). It was previously part of the patio.

Does this need a gutter?

Is this determined by building regs? Or best practice?

Thanks.

 

[catlad]

Seen lots with and lots without I guess it depends what
is practical and what you are prepared to put up with
when its raining.

 

[garyo]

Do you have wooden window frames beneath, or upvc? How much soffit overhang does the roof have and how big are the cills? What I'm getting at is... You dont want a situation where you have wooden windows continually getting their feet wet from cill splashback from the roof.

On the other hand, it could be a sheltered south facing location, big roof overhang plastic window etc.

 

[RichA]

The bay windows has not been fully built - it will be new timber windows. I have attached the proposed elevations (front & side). There should be some overhang and the bay will face West.

Does that help?

 

[bobasd]

gutters save a lot of grief down the line but you dont have any obvious place for a downpipe on the bay itself.
Is there a nearby gulley or a passin downpipe?

if the bays not yet built why not build it out further an make room for a downpipe an a more respectable footprint for the money

 

[catlad]

A lot of those were drained using a secret lead pipe.