[Closed] Should there be a gutter here?

what does the drawing or specification detail for the works? was it priced in the agreement with the builder?

but yes, in my eyes there should be a gutter there.

Not over the flat roof no. That would mean screwing though the lead

Hmm. My thought is yes, otherwise there will be a lot of water discharging from the pitched roofs onto that flat roof - I'd be uncomfortable with that.
But it would need to be fitted without compromising the flashing.

Is the lead flashing a normal and adequate way of waterproofing that area?

Is it possible to fit gutters without compromising the lead flashing?

I would fit a hopper first and then shape the lead in to it.
Edit:Just looked at the 2nd photo, do you mean coming off the flat roof or pitched? Hopper off the flat roof and gutter all the way along the pitched.

Yes - and there appears to be a downpipes available.

Can’t see the second picture

If you don't, most of that visible roof including the main upper roof will be discharging onto the flat, which is not a great plan, even though there is 'some' provision for it to drain into the downpipe. So yes, full length gutter fixed under the slates on the new extension.

Where did that top downpipe terminate before the extension was built? Did it just discharge onto the flat roof or go all the way to the ground? If it previously went all the way down then that is a lot of extra water being routed that way.

There’s a lot in that picture that isn’t fantastic. Lead outlet isn’t done but the first layer of flat roof has been. I’d want it under all the layers. The fascia on the right has been done. How is that edge going to be finished?
I’d have done flat roof first, then all the flashing to that, fascia, then tile
I still wouldn’t screw though the lead and after all flat roofs do take water... The problems arise with standing water/age

Not keen on dry verge either but that’s aesthetics

yes otherwise you will get damp on the wall.

Is the lead flashing a normal and adequate way of waterproofing that area?

Is it possible to fit gutters without compromising the lead flashing?

Its usual to turn the flat roof covering up the wall and then flash the upstand. I’d hope that there is an upstand behind the USB fascia board. If there isn’t you don’t have a waterproof roof, lead flashing isn’t going to make a difference. If there is an upstand I can’t see the purpose of flashing the USB continuing the fascia cladding would have made more sense.

Flat roof should return minimum of 150mm up the vertical face and then be terminated with either a t bar, or brought up under the pitched roof to lap the felt.
That junction is then sealed so no need for a gutter. Should also be insulated behione to prevent a cold bridge. Personally I'd have considered reducing the insulation against the pitched roof edge to form a gutter and then fall it towards the flat roof edge.
If you put a gutter on the edge as other have said you'll be fixing through the flat roof upstand detail.

Hopefully this fixes the pic issues, this is how it was this morning:

https://flic.kr/p/2gbPBF8
and
https://flic.kr/p/2gbPhPb

This is how it is now
https://flic.kr/p/2gbPBq8

As you can see they have lead flashed directly onto the timber frame then felted over.

Is this right and most importantly is it waterproof?

Funny detail. Regarding the slate roof then yes it needs a gutter The reason this then poses an issue is that the brackets are usually fixed into the facia, which in this case is the upstanding of the flat roof. I’m not sure if there is a gap between the bottom of the facia and the flat roof or not, if not then the felt up stand should weather the facia detail. You would usually have a lead cover flashing chased into the render at that point, and it could then be fixed into the top of the facia, however this would need to be done before the slates we’re laid as they are nailed into position. I would then have guttering in the facia into a running outlet into the hopper

It’s waterproof but i’d want a flashing from under the eaves tray over the felt upstand
Still don’t like where the fascia ends.
Are there soakers under the cover flashing?
You aren’t going to get leaks but i’ll bet it’ll be damp in areas

Look like Cambrians? Not really a slate..

You should get the building inspector to have a look at that. The lead shouldn’t go under the flat roof material. As others has said felt goes up and then lead dresses over.
Does all the water go to that one outlet? There’s a lot of drained area to one small downpipe.
To answer your real question - yes to gutter to pitched roof.

Look like Cambrians? Not really a slate..

True, didn't look that closely.

You should get the building inspector to have a look at that. The lead shouldn’t go under the flat roof material. As others has said felt goes up and then lead dresses over.
Does all the water go to that one outlet? There’s a lot of drained area to one small downpipe.
To answer your real question – yes to gutter to pitched roof.

This is the lead detail for the flat roof to terminate in the rain water hopper. Quite typical detail this, but there should still be a cover flashing over the top of the felt upstand, and under the slates.

Does the pitch of the roof go over that upstairs window or does the ridge just tuck under the sill? 😳

Wrightyson - I’m no builder but I spotted that. Looks odd. May be a perspective issue.

May be a perspective issue.

You can see the ridge tiles joining just under the window. Would be an interesting arrangement otherwise. 🙂

The ridge tiles terminate a little beneath the window sill.

The upstand height below the edge of the pitched roof is too low. This makes fitting an eaves gutter problematic.

If the pitched roof is going to drain onto the flat roof then the flat roof should ideally slope away from the pitched roof. In your case the flat roof slope is parallel with the new roof ridgeline. If your designer wants to do it this way and his design does not allow for an eaves gutter then a U-channel gutter should have been set into the existing flat roof surface - this drainage channel is handling a LOT of water, especially as it appears that your main house roof also now drains via this route. Is that one downpipe serving the flat roof drainage up to the task I wonder.

It appears the designer has been struggling with heights and has not resolved the design correctly leaving you with this situation. If that downpipe serving the flat roof blocks you will get a lot of standing water. Please tell me there is more than one route for draining the flat roof?

This is not a good arrangement, and I would query it with the designer before any further work takes place. And make sure your contractor retention and warranties are correct and in place.

Additional note:

Looked at the photos again. The design is pants I'm afraid. They will need to install a gutter at the exposed edge of the pitched roof past where the flat roof ends. I assume this will also drain back onto the flat roof?? Not good. It might be ok if it were handling only small amounts of water but not suitable for draining such large areas.