Need some thought on roof tie in

jfh28 · Jul 20, 2018

unfortunately there is no easy solution here.....basic architectural design 101 is never create a roof intersection like that........besides the obvious aesthetic nightmare at the front of your house more importantly is the creation of a very vulnerable spot in your roofing.......what is happening is all the water from the sloped gable section as well as the over-framed valley section is now being funneled down into one small point.......no matter how well that is flashed sooner or later it will leak......most likely in the winter with snow/ice build up......and torrential thunderstorm rains will easily overwhelm any scupper you can put there and you will get over shoot of torrents of water going down your walls......I would go back to whoever the architect was that designed this and tell them they created this now they can fix it......Jack

ddbackhoe · Jul 22, 2018

lzicc said:
I am putting an addition on and ran into an issue with the front valley. If you look at the picture, the valley from the new roof to the old roof doesn't end at the corner of both roofs. It's hard to explain. What I need to do is extend the overhang for the 2 roofs to meet level, but the overhang would be 34" which is too long for an overhang. The issue is how I am going to run a gutter to the valley the way it sits now. I am going to try to take some better pictures.

View attachment 563317 View attachment 563318

Extend the Ridgeline of the original roof out, flashing and Epdm wont stop that from leaking.

ddbackhoe · Jul 22, 2018

jfh28 said:
unfortunately there is no easy fix....I would go back to whoever the architect was that designed this and tell them they created this now they can fix it......Jack

Well if this was an episode on an HGTV show, we would take the roof off, then extend the wall height, add tray ceilings, some cool led soffit lighting, a retro claw foot soaking tub, glass shower, and an outdoor patio with bbq island and kegerator then put the roof back on.

EddieWalker · Jul 22, 2018

It might be easier to figure this out if you did a scale drawing from above, looking down.

downsizingnow48 · Jul 22, 2018

From what I can make out, flashing the intersection and putting up a collector will not be satisfactory.

The normal solution to this kind of situation is to extend the existing roof to meet the new roof, so you get a normal valley at the intersection. I think that is what Eddie has already said.

It would help to take a photo of the top of the roof without all the white covering in the way, then we could see what is really going on there.

Tompet · Jul 22, 2018

jfh28 said:
unfortunately there is no easy solution here.....basic architectural design 101 is never create a roof intersection like that........besides the obvious aesthetic nightmare at the front of your house more importantly is the creation of a very vulnerable spot in your roofing.......what is happening is all the water from the sloped gable section as well as the over-framed valley section is now being funneled down into one small point.......no matter how well that is flashed sooner or later it will leak......most likely in the winter with snow/ice build up......and torrential thunderstorm rains will easily overwhelm any scupper you can put there and you will get over shoot of torrents of water going down your walls......I would go back to whoever the architect was that designed this and tell them they created this now they can fix it......Jack

Agree, also taller side walls on addition might have avoided this, but how did the progression of the build get to this point?
Less than ideal for sure, good luck and post any approach to resolution.

lzicc · Jul 23, 2018

I'll need to box in the gable ends, so that should fix the issue. I can run a gutter on that box to catch the valley. It shouldn't had ended up like that, but it did. I tried to plan for everything when making the plans for the addition, but didn't see this issue coming.

I'll get pics with the paper taken off so you can see it better, but boxing the the gable to eave end will give me a place to put a small gutter to catch the valley without looking too out of place.