Built In Gutter - Changing Slope - Roofing - Contractor Talk

Built In Gutter - Changing Slope

 
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Old 07-10-2012, 08:33 AM   #1
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Built In Gutter - Changing Slope


have a built in gutter system extending across a roof.

how can the slope be changed to go to the other side (ie. can fittings be installed within gutter to allow water to flow to the roof's other side)

as seen below in pic, there is water accumulation mostly due to flow from scupper/elbow gutter

also want to remove a scupper and block off the flow exit point.

thanks
Attached Thumbnails
built in gutter - changing slope-dscn1400.jpg   built in gutter - changing slope-dscn1397.jpg  

Last edited by zeppyroof; 07-12-2012 at 03:51 PM. Reason: enhanced info
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Old 07-10-2012, 02:57 PM   #2
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Re: Built In Gutter - Changing Slope


Tapered ISO or fab a new metal liner.

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Old 07-10-2012, 05:27 PM   #3
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Re: Built In Gutter - Changing Slope


a taper metal liner would be good

how would you seal it to exist walls of builtin gutter
thanks
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Old 07-11-2012, 11:49 AM   #4
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Re: Built In Gutter - Changing Slope


You should remove all of the material in the surrounding area, but One could just drop in a new liner that had a flange on each side and seal to that.
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Old 07-12-2012, 10:43 AM   #5
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Re: Built In Gutter - Changing Slope


seems this is a minor project. true?

also, worth doing to eliminate lots of water that is ponding on a flat roof?
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Old 07-12-2012, 03:21 PM   #6
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Re: Built In Gutter - Changing Slope


minor?..looks like a real mess to me
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Old 07-12-2012, 03:52 PM   #7
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Re: Built In Gutter - Changing Slope


a better picture of the built in gutter system include above

suggestions on approach to eliminate scupper and reroute gutter?

need to reflow water to the other side of built in (which requires resloping); other end of built in turns to right and then to down spout

thanks

Last edited by zeppyroof; 07-12-2012 at 04:01 PM.
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Old 07-12-2012, 04:19 PM   #8
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Re: Built In Gutter - Changing Slope


That is not a simple fix. Best case scenario is to tear it off to the decking and start over. Looks like compressed layers created areas of sag. Shimming off the trusses, putting down new corrugated metal decking, and properly sloping the new rubber is your best bet.
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Old 07-12-2012, 06:13 PM   #9
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Re: Built In Gutter - Changing Slope


thanks,

problem is that all this water is going onto a flat roof area with several ac units. the current roof layer is middle aged and there is lots of pooling that sticks around for awhile and drainage off area is poor. its in a winter climate

is it worth addressing this by redoing the gutter work? if left as is and because this roof area has had leak issues in the past for unknown reasons, it may create future problems.

is it worth addressing long term?
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Old 07-12-2012, 06:25 PM   #10
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Re: Built In Gutter - Changing Slope


Could surface piping be used to relocate the excess water? Not ideal but until it can be redesigned and replaced it is a cheap out.
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Old 07-13-2012, 08:39 AM   #11
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Re: Built In Gutter - Changing Slope


i guess the basic question is, should it be fixed? and will the excess water accumulation hurt an older roof over time?

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Old 07-17-2012, 12:02 PM   #12
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Re: Built In Gutter - Changing Slope


Quote:
Originally Posted by zeppyroof View Post
i guess the basic question is, should it be fixed? and will the excess water accumulation hurt an older roof over time?

thanks

Yes and no, it really looks like a mess and should be fixed at some point in time or another. But honstly the best way would be to redo the whole areas.

Ponding water while not great isn't as bad as everyone thinks it is, on a very old roof yes, newer roof should be able to hold up for awhile.
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Old 07-17-2012, 12:12 PM   #13
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Re: Built In Gutter - Changing Slope


its a roof that presents a major challenge because there are about 6 large AC units that when a new roof is needed will make the effort very challenging (curbs, lifting units, etc).

seems avoidance of drainoff into this area from other roof areas would be very desirable for purposes of extending roof life

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