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Roof Gully

 
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Old 01-11-2011, 07:02 PM   #1
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Roof Gully


I came across this roof gully today on a slate roof we stripped off, i have seen all sorts over the years but not one like this that goes through the inside of the roof like this, thought i'd share it with you!
Cheers
Dave
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Roof Gully-img_1136.jpg   Roof Gully-img_1137.jpg   Roof Gully-img_1141.jpg  
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Old 01-11-2011, 07:23 PM   #2
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Re: Roof Gully


That is so far removed from the sh!i I see over here. A gulley? does the water travel under the roof or somethin.? I don't get it.

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Old 01-11-2011, 08:46 PM   #3
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Re: Roof Gully


That's pretty interesting. Obviously, when the roof and gutter was first installed, they didn't, for whatever reason, want any drainage on one side of the building.
That's a pretty unique and feasible idea I could use on some of the city buildings here. May I save copies of these pix? And others would be welcome too.
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Old 01-11-2011, 08:55 PM   #4
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Re: Roof Gully


Quote:
Originally Posted by jmiller View Post
I don't get it.
They're more energy-conscious in the UK; they use passive systems.

That there is a state of the art attic humidifier.
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Old 01-11-2011, 09:03 PM   #5
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Re: Roof Gully


That's awesome. I have never, and probably will never see anything like that since we mostly work on homes built in the 90's.
I still don't get how that's a better idea then running downpour all the way around though.
Did it leak? Or was the roof being tore off for another reason?
How old was the original construction?
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Old 01-11-2011, 09:12 PM   #6
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Re: Roof Gully


well hell, at least they put a screen over it.
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Old 01-11-2011, 09:12 PM   #7
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Re: Roof Gully


Quote:
Originally Posted by ohiohomedoctor View Post
That's awesome. I have never, and probably will never see anything like that since we mostly work on homes built in the 90's.
I still don't get how that's a better idea then running downpour all the way around though.
Did it leak? Or was the roof being tore off for another reason?
How old was the original construction?
Row houses sometime abut other ones. Sometimes, you can't run your gutters around the other house too. Unless you want to offer them a free gutter system. Sometimes, 100's of feet.


"That there is a state of the art attic humidifier."
Not really. Only in America are we so weird about underlay and closing things off/out. Over there, they are more interested in doing the roof, itself, correctly. No underlay as a rule, and better breathability. It might be why building there lasted so many years, and our very old ones last too.
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Old 01-12-2011, 10:33 AM   #8
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Re: Roof Gully


Was that the only gutter drain? It looks like an over flow for the main gutter.
Or, is the third picture how it looked before it was all torn off?
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Old 01-12-2011, 10:42 AM   #9
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Re: Roof Gully


Very interesting. Nice to see something...err...different for a change.

Better design would probably have alleviated the need for that system. The funny part is that someone hasn't figured out a way to design that into buildings here yet.

Roof gully...heh.
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Old 01-12-2011, 10:48 AM   #10
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Re: Roof Gully


oldfrt has a similar water management detail in his porch rebuild thread
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Old 01-12-2011, 02:34 PM   #11
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Re: Roof Gully


It is all strange to me. This area wasn't really settled until 150-170 years ago (besides sod houses), and all materials came in on rail car, so everything got shakes, and then came asphalt. Slate roofs are just nowhere to be seen, especially not a fancy one like that. :-)
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Old 01-12-2011, 03:02 PM   #12
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Re: Roof Gully


I have never seen an open one like that. Any I've seen were made of pipe. Interesting.
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Old 01-12-2011, 05:42 PM   #13
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Re: Roof Gully


Right,there seems to be quiet an interest, the pictures i post below will try to give a more accurate view of why they have come through the roof,there is a the middle section of this house where the only way though is either through the middle of the house(seen it done before but cause is noise when it rains) or though the roof, picture 3 below will show the other out let, the 2nd picture is of the house its self to give you an idea of the size.
Cheers
Dave
P.S. Frank by all means copy this photos if you want.
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Old 01-12-2011, 05:56 PM   #14
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Re: Roof Gully


Denis, the original 3 picture is the drain in the gully that is in the middle of the roof, that then goes though the open trough and out in to the lead gutter that is all around the property(pic 1) Photo 2 shows another view of the trough that goes though the roof, the H/O tells me this has never leaked! and the photo 3 is of the expantion joint that is nessasary every 1.5 mtrs (5ft) and is welded in to place, this is a big roof so there are lots of them, i didn't have the please of putting them in!
Most of the inside roof are concrete tiles now, just the out side is slate, we were called to this job as the H/O didn't think the roof looked right after the original roofer had finished it 6 months ago and had been back 3 times to fix different thing that were wrong, i came to take a look at the chimneys and the h/o then asked me to do some slate repairs which i agreed, it was only when i started to fix the slates when i found out this guy didn't know how to slate!1, we have stripped it off and re -felt and battened it and re-slated it, should finish tomorrow weather permiting.
Cheers
Dave
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Old 01-12-2011, 06:08 PM   #15
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Re: Roof Gully


Thank you Sir! Saved 5.
I wasn't 100% sure becasue that pic of the outside of the gutter area could have been a slate or the outer lip of the gutter. Just wasn't sure.
Your pix give the other scenario I envisioned but was too lazy to type. I was sure it was one or the other.
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Old 01-12-2011, 06:25 PM   #16
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Re: Roof Gully


Will this credit be OK?
Photos curtesy of:

David of 'Dr Roofing'of Warrington England

http://www.drroofing.co.uk/
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Old 01-12-2011, 09:36 PM   #17
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Re: Roof Gully


You have a great site dr. roof. Although your posting of elaborate details here begs the question: why not have more step by step type details on your site.

Edit: After all, that's why frank wants them.

Last edited by jmiller; 01-12-2011 at 09:38 PM.
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Old 01-12-2011, 09:46 PM   #18
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Re: Roof Gully


Quote:
Originally Posted by tomstruble View Post
oldfrt has a similar water management detail in his porch rebuild thread
ha. now that you mention it I remember.

We did one with a green roof/ epdm/ and 4" PVC, but it went straight through soffit. Could have been an exterior wall, or interior attic space for that matter (AFAIK). Nothing like the above could ever even be attempted in the present day though. That's Simpsonesque.
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Old 01-12-2011, 10:12 PM   #19
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Re: Roof Gully


Correct me if I'm wrong, but it's an impossible roofing scenario. To fix it would require a cricket the size of a room addition, or a flat roof built at the ridge line of the lower roofs.


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Old 01-13-2011, 10:31 AM   #20
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Re: Roof Gully


Duh, I was thinking the first picture was the top of the "gully" when it was the bottom.

Good solution to the roof drainage problem over there, but in my location there would be a problem with the water freezing in the drain in the winter. By the looks of that attic insulation, I don't think that would be a problem for that particular roof.

Regarding the gutter expansion joints. Is the black stripe some kind of membrane bonded to two pieces of lead on either side? From the picture those welds look pretty good, but I don't have much experience in lead burning.

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