Dribble down external wall from bay windows

Hi there,

First time post - this looks like the place to post our issue looking at the answers that get given, so fingers crossed!

We have a 4 year old new build house, and an issue whereby if it rains the rainwater accumulates on the bay window, and flows down the side of the wall - leaving the lovely mess on the wall as in the picture below.

Most of the houses on the street with bay windows like this have the same issue, but not all of them - and we seem to have it worse for some reason.

Has anyone had a similar issue, or can recommend a good fix?

I don't particularly want to get guttering, and am not sure how well it will do at picking water up that looks as though it is accumalting and passing straight onto the wall from the roofing (ie not all of the water is dripping off the ledge of the bay window onto the ground, looks like it is rolling back to the wall and seeping onto the wall)

Thanks in advance!

Paul

pdc77, Paul, Hi.

Any chance of a few more pictures please, taken just a little bit further back so we can get a look at the structure above the window?

Ken

Is water ponding on the bay roof, and ponding on the porch roof? Are they pitched or flat roofs?

The porch and bay roofs need guttering and RWP's. Ground splash can cause further damage.

The white area with the crack on the bay side indicates that repairs have been tried in the past.

What do you mean by: "I dont want to get guttering"

Have attached a couple more files, the roof of the bay windows is on a slight slant and water is meant to flow off the front lips and not down the wall. But as you can see a little bit of water congregates at the front lip

The house is 4 years old, and there are maybe 50 houses around us that have the same bay windows and porches, but no one has (yet) got guttering. A lot of houses get this dribble, but by no means all of them - which is one of the reasons why we're looking at seeing if we can fix it, before looking at getting guttering.

Not aware of any repairs done on that crack, and we've had the house from new.

What do you mean by RWP?

Thanks, Paul

If you didn't repair at the crack then its been there since day one. The crack runs up and left under the roofing material. Maybe the crack is only superficial thro the synthetic render but its at the lintel bearing position so it might be penetrating the block?
The white stuff was applied over the render so the sequence might have been: crack appears in the render - white stuff is applied - crack appears in the white stuff - movement of some kind is going on.

The porch has a slight pitch but its still discharging at the wall.

Why the bay flat roofs have a lip is bad building practice - i should imagine that if you put a level to the roofs you would find the "flat" surface sloping a little backwards.

Pics of the neighbour's non-dribbling bays would help.

The fascia/eaves detailing is not helping: moisture is possibly penetrating into the soffit.

All in all its a bad design, and retro guttering, and maybe re-arranging of some of that detailing, will be necessary in the long run.