Roof membrane overhang into gutters normal?

paddy's_mum

ian103 wrote: »

It should be valley gutter type detail, the tray can be grp, plastic. aluminium, lead etc.


An example is:-



https://www.marley.co.uk/products/accessories/grp-dry-valley

That is what I have got on my extension, passed by a RICS surveyor as well as building control in 2005 and never spilt a drop of water into the building..despite this general area having some of the coldest, wettest weather extremes in the country.

See Holbeach weather extremes.

Tucker

Hoorah wrote: »

If the membrane is sat within the bottom of the gutter, could it cause rising damp up through the membrane under the tiles?



In regards to the gutter being too low under the tiles, what issues would this cause? It's been up a week and we've had heavy rain, I've not noticed the rain running past the gutter and it all seems to flow ok. My main house rear gutter runs onto the top of the conservatory roof as per the photo so there's alot of water running onto it.



Also in regards to everyone's comments about the roof join into the garage roof. What issues will this cause exactly?





From everyone's opinion, is this roof a real issue here and would they reject it?



Please forgive what may be stupid questions! I just need to at least sound like I know what I'm talking about when he comes around. :rotfl:

Water running off your garage roof is going to run under your conservatory roof and potentially into the conservatory.

That join is not right. You should have a valley there.

You are going to have water ingress with that join.