Leaking Aluminum Roof on enclosed Florida Room

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  #1  
Old 08-22-13, 08:20 PM
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Leaking Aluminum Roof on enclosed Florida Room

We have an aluminum insulated panel roof attached to a low pitched shingled roof. Over the course of the last few years we have siliconed, roofing taped and roofing tarred all seams - where panels are connected and where aluminum meets shingled roof. We have also tarred the valleys on the shingled roof. The flashings around the peak vents and flue pipes have all been silicone sealed as well. As a last resort we tarped areas of the shingled roof nearest the worst of the leaks. It is still leaking. Nothing we have done seems to have any impact on the leaks. The aluminum roof is leaking on both sides of where it meets the shingled roof (this is where it starts and where the worst leaking occurs) it also leaks at all the other seams to a lesser degree. Is there anything else we could do?

There are no leaks under the shingled roof.

Thanks,
Melissa
 
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Old 08-23-13, 02:05 AM
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Welcome to the forums! Marrying steel/aluminum to a shingled roof always causes problems with leakage unless properly flashed. Hopefully you haven't tarred and siliconed yourself into a situation that can't be reasonably fixed. With roofing, it isn't tarring, but the layering providing the runoff. You obviously have a low pitch on the metal roof which could be allowing capillary action to run water back under the shingle roof. But this is a guess. Could you post a few pictures of the roof system (not close ups) We need to see the valleys and especially where the metal and shingles meet. Maybe we can come up with a solution. http://www.doityourself.com/forum/el...your-post.html
 
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Old 08-23-13, 05:47 AM
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Without a picture it's difficult to tell exactly what you have but most of the Band-Air repairs you mention can very likely fail if not done properly. And, you have to keep in mind that they are mostly temporary only. Caulk & tar often eventually degrades & cracks over time being exposed to the weather which is why proper construction of the structure and flashing are so important. Unfortunately caulk and tar can make proper repairs more difficult.
 
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Old 08-23-13, 08:45 AM
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Tar and caulk don't seal leaks like this. Those materials break down over time and will not hold if if they are in areas that get hit directly by significant amounts of water. Properly layered shingles and flashing are what shed water off a roof. Caulk and tar just seal certain gaps the water passes by as it follows the path of least resistance down to the edge of the roof so that it doesn't divert and leak through.

If the path of least resistance for the water is through the areas you keep trying to seal, it will work its way through that stuff over and again. It sounds like you have a flashing issue. You probably don't want to hear this but you need a roofer to look at the flashing and re-do the problem areas, as its either degraded to the point where it won't do its job or wasn't done properly when the roof was last done. Don't do anymore yourself, you've probably already caused the roofer extra work that he will charge you for.
 

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Old 08-23-13, 09:18 AM
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Thanks everyone. When my husband gets home I will have him go up and take some pictures. We have had a roofer out to look at the problem and attempt to fix it. He is the one that put most of the tar down. I will have the pictures up tonight.

Thanks again,
Melissa
 
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Old 08-23-13, 09:19 AM
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Definitely do not bring that guy back.
 
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Old 08-23-13, 09:54 AM
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Here are the pics...decided I didn't want to wait until my husband got home.

I'm no roofer but this looks like a disaster (first time I have seen the roof).
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If you need different pictures just let me know.

Thanks,
Melissa
 
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Old 08-23-13, 10:14 AM
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I agree with your "disaster" impression and maybe add train wreck. I don't think you are going to want to hear this but I think you have some basic, improper construction. Your roofer may have been applying Band-Aid fixes to a bad situation in order to save you some money. I don't think that very shallow pitched aluminum roof should have run right up to the fascia of your shingled roof. Something that should have never been built in the first place. I imagine a good Florida thunderstorm or Hurricane will dump so much water that it can't get off the aluminum roof fast enough and backs up under the flashing and shingles.

The good news is with that blue tarp you are in need of a new main roof anyhow. I would bring in a couple roofers for estimates with an eye to properly fixing the problem. It might involve a membrane system over the aluminum roof with some framing where the roofs meet so the membrane can extend up under the shingled roof. A metal roof might also be an option.

What is the aluminum roof? A sun room or porch you might consider removing?
 
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Old 08-23-13, 10:32 AM
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Train Wreck is a good way of describing it...

The aluminum roof is a porch that the previous owners enclosed and added the roof to. Inside they put drywall up over the concrete outside walls. The blue tarps were put up to try and stop the leaking over the aluminum roof. We were told that it might be coming in from the vents on top of the roof but that clearly isn't the problem. The shingle roof is still in pretty good shape. I would love to tear down this room and start over but that isn't in the budget right now. It is a pretty big room that we use as the kids playroom. I will definitely take your advice and call a few different roofers out to take a look.
 
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Old 08-24-13, 04:28 PM
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Do you have some pics of the inside where the leaks are showing up?
 
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