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Old 10-17-2009, 02:21 PM   #1
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Flat Roof Repair--Question on roofing type


Hi My son just sent me a couple of pics from D.C. on a 4plex he recently bought that has some leaks in what appears to be a pretty good looking roof--mind you all flat roofs look bad to me.

I am trying to figure out what type of roofing system he has so we can get some reputable roofers out there to patch and perhaps replace two skylights while they are at it.

I assume this is a membrane roofing material that has adhesive attaching it to either decking or plywood (building is circa 1940's) and then has been coated with silver colored coating--aluminum asphalt?

My son says there appear to be 4 leak areas. roof is roughly 34 x 39 and has a parapet separating it from the unit next door.

any wisdom on repairing the leaks and other mainteance recommendations for the rest of the roof would be appreciated. He is preparing to do a major remodel of the building and wants to get it dry and tight.

Any rough estimates on costs for repairs etc. would be helpful.

thanks

jeff
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Old 10-17-2009, 07:00 PM   #2
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Flat Roof Repair--Question on roofing type


It looks like a "Torch Down" roof system, Derby gum, or hot asphalt roof that has been coated with fibered aluminum coating.. Also, there may be multiple layers on it. Closer pics of details and problem areas are needed to properly identify potential issues.

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Old 10-18-2009, 07:35 PM   #3
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Flat Roof Repair--Question on roofing type


You need a means to get the water off the roof too!

Vent stack looks too short also.
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