Coping detail and leak down wall

[Roger H]

I have an issue regarding water not quite getting into part of my guttering. The slates at my eaves are fairly short to one end of our cottage, with minimal overhang over wall. Having replaced plastic guttering with cast iron, and at the problematic over hang part, slid a section of ‘eaves protector’ under the decayed sarking felt, I am still getting a leak down the face of the building.

Having tested it with a can, the slates are successfully draining into the gutter, and the not-ideal flashband (or whatever it is) appears not to leak. However, when water gets onto the top of the coping stone/kneeler it is getting past the gutter stop-end and down the wall. I’m guessing the ideal solution is to strip out the shoddy flash band and cement fillet and dress some lead in with an oversail that takes water into the gutter. I THINK The coping and kneeler are separate pieces – hence the cement bed. I should have checked the other side of the stone for certainty.

Any tips or views please? It's an issue as apart from wall getting soaked there is a window underneath bearing the brunt.

 

[88v8]

Yes, that looks the way forward.
I had the same situation on a gable return of our previous house. There, I must confess, rather than strip back the lead - which was pebbled-dashed over - I added a cement fillet above the gutter end, and that did the job. As I recall, I carefully cleaned and then PVAd the wall to ensure the fillet would adhere.
It then lasted years, but it was on a north face where our ancient enemy the sun couldn't get at it.

Ivor

 

[Roger H]

Thanks Ivor. Do you think it is likely that I would have to remove the fillet/flashing all the way up the slope just in order to do the bottom section?

 

[88v8]

The fillet looks as if it was incrementally applied, I imagine it will chisel back to a joint, perhaps above the third course, although tbh it looks pretty thin and I expect you could chop it with a scutch pretty well anywhere.

I doubt the flashband will restick, so where you wish to insert the lead beneath it and the new flashband if that's what you decide, you may have to make a mechanical junction with a couple of brass screws and stainless washers before you fillet it over.
Really though, it won't take much lead to divert the flow of water away from that gutter end.
Catching what runs down the coping would need the lead cut in below the coping or, as I say, a cement fillet sitting above the end of the gutter. Depends how fussy you want to be in catching the dribbles as well as the spates,

Could be the camera angle, but the felt support tray seems to leave little room for water to run into the gutter in a storm. I realise the gutter capacity is still there, but water takes time to find its way around an obstruction. Are you sure it won't overflow in heavy rain? Just a thought.

Ivor

 

[Roger H]

Thanks Ivor - sounds good advice. It might well overflow in heavy rain but unfortunately there is no room for play in any direction, short of lowering hopper at other end of run and affecting neighbours gutter too... I'll stand under it next time there's a storm... :?