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Desperate - gutter apron installation over flat roof asphalt?

Desperate - gutter apron installation over flat roof asphalt?

Old 07-16-13, 06:44 AM
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Desperate - gutter apron installation over flat roof asphalt?

I bought house May of 2012 and just before I did they redid the flatroof over the rear patio (connected to house). Half the house's rainwater channels down the house's main roof and patio flat roof over the patio. There was a gutter installed prior to the flat roof being redone so I went up and installed one myself. The problem with the installation was two fold -

1) There was a gutter apron installed on the new roof AND
2) The patio is screened and the connections are high enough on the flat roof that it was impossible to install the gutter under the existing gutter apron

As a result I had to improvise. I installed the gutters on the outside of the gutter apron and where the gutter and roof did not meet very flush I tried to use a silicone gel to fill the voids in order to reduce water getting between the gutter and the apron.

This is an imperfect solution though and I'm looking to divert the water once and for all into the gutter channels. One solution would be to install another gutter apron over the flat roof and gutter using roofing cement. The problem with this solution will be it could potentially look bad... the flat roof is asphalt sheets (rolls?) and cannot simply be pulled up to slip a drip edge under. It would be functional and not visible to anyone not on the roof, but still if I go to sell the house in a few years an inspector would be like WTF?

Alternatively - and a few bucks more, I buy a sticky membrane like this - W.R. Grace 18 in. x 50 ft. Grace Detail Membrane-5003228 at The Home Depot - and evenly cut it into ~3 inch strips overlapping the roof-gutter connection. Similarly it would be visible to someone on the roof but it may look cleaner since it'll be much darker. But would it hold up?

Thoughts on this? Alternative solutions? Experts please help!

EDIT: Alternative to the membrane, this? Cofair Products (QR325) 3" x 25' Aluminum Quick Roof Repair : Amazon.com : Home Improvement

Last edited by Mattitude; 07-16-13 at 07:03 AM.
Old 07-16-13, 02:55 PM
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I would disconnect the gutter and take it off, bend the existing gutter apron up high enough that you can get the gutter under it, then bend the gutter apron back down and put some screws in it if you have to to keep it down.

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