Flat Roof Leaks

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Old 04-16-17, 03:07 PM
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Flat Roof Leaks

So first I would like to say, yes I know this roof needs to be replaced. I am aware, however its on the carport and there are a number of other things that are coming before it. Why I am posting is because the roof does leak pretty good and I want to try and save the roofing material underneath. So my question is, is there any sort of waterproofing sealant or membrane or anything out there that I can put on the existing roof to help seal it temporarily? I have attached a few photos of the roof. Any suggestions would be greatly appreciated. Name:  IMG_1867.jpg
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Old 04-16-17, 03:14 PM
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Ouch !! You may get a slight reprieve by using one of the mobile home roof coatings, but don't look for it to be a long term solution. That roof would require a great bit of cleaning and neutralization of the growing matter before you could consider a coating, so you have quite a bit of work to do.
 
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Old 04-16-17, 03:21 PM
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yes I know its pretty bad, and needs some work before I could put anything down.
 
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Old 04-17-17, 03:44 AM
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Can you pinpoint most of the leaks? Like Larry, I'd use a MH roof coating after cleaning it up the best I could.
 
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Old 04-17-17, 07:32 AM
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Seeing this would be temporary I'd throw some EPDM up for now, not sure how you'd hold it down. Hard to tell how big that is but mobile home roofing stuff isn't cheap either and I think this would be a lot easier and quicker.


https://www.menards.com/main/doors-w...40885424532181


Is that rolled roofing on there now? I have an entryway with that and is a huge pain, rolled roofing is NOT for flat roofs from what I've read. I don't know why people do that.
 
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Old 04-17-17, 11:39 AM
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What exactly is mobile home roof coating. Some quick searches shows it used mostly for metal?

The EPDM is an interesting idea but yeah not sure how too hold that stuff down.
 
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Old 04-17-17, 11:43 AM
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There are 2 types of mobile home coatings and yes they are mostly for painting metal. The most used MH coating is an asphalt fibered aluminum paint [oil base] but there is also an elastomeric roof coating that is latex and white. The biggest drawback of the elastomeric is it doesn't cover or stop rust so it requires a primer ..... but that isn't a problem with your roof.
 
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Old 04-17-17, 12:03 PM
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Old 04-17-17, 12:49 PM
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I would say no. Here is an answer from that web site...

It can withstand intermittent ponding BUT NOT LONG TERM longer than 2 weeks+. If possible fill in the depressions with caulking or patching material.
I think you would have some ponding up there. I actually tried a similar product years ago and where there was a dent in the metal the white stuff actually liquified... couldn't believe it.

How big is the carport and what do you consider temporary?
 
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Old 04-17-17, 12:51 PM
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It should, that is an example of the elastomeric roof coating I mentioned.
 
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Old 04-17-17, 04:08 PM
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That's a rough roof.
I this were my problem,

I think I'd go downstairs, get a sawz-all or 3" hole saw and drill a new drain up through the roof near the center of the roof (because it doens't look like current drainage is working).

I'd layout a poly tarp across the roof, use some 2x4's with pre-drilled holes that match the eyelet pattern on the tarp to secure the ends of the tarp to the white perimeter.

Feed the center of the tarp through the hole, go downstairs and pull it through, cut a hole and duct tape it to some sort of downspout.

If you're worried about what the neighbors think, perhaps some white pool pain on the blue tarp, to make it look nicer, and also to prolong the lifespan of the tarp.
Probably a few bricks or concrete blocks to keep the tarp from billowing.
 
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