Name that roof

[Ben H]

It's some kind of rubber membrane. When I first crested the peak, I thought they left the shingles out of these two spots.

Anyone know what is, and if it's good/crap?

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[Jim Katen]

I can't tell from the pics.

What was it like up close?

If it looked like the stuff that tire inner tubes are made from, it was EPDM.

If it was stiffer & shiny and looked like it had a woven fabric laminated inside the plastic it might be PVC or TPO, but those are almost always white.

If it was thick, it was probably an uncoated modified bitumen.

[gtblum]

I don't know what it is, but I bet it took some head scratching to figure out what to do with that puzzle.

[Ben H]

Here is another shot. Don't know if it will help. I would compare it to a inner tube.

Can anyone comment of the quality of the install? Seems suspect to me...

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[kurt]

It sure looks like EPDM.

I don't see any seams that would tell me it's mod bit.

[caryseidner]

No question about it, that's EPDM.

[charlieb]

I'd vote EPDM. I see it here in my local area on dinked up roof valleys occasionally.

[Bill Kibbel]

EPDM installed by roofing contractors that have had no experience installing it. It's weally wrinkly.

[Ben H]

Shouldn't it be flat against the roof, not bubbled up all along the edges? The rest of this house was crap, so I've convinced myself this has to be as well.

[ericwlewis]

epdm. It looks like there's a factory seam (to make continuous rolls) in a couple of your pics. We've installed several of these on low slope areas. It comes in 60 mil and 45mil. 45 mil is what you can get from Menards and is actually much harder to work with as well as not as durable.

We've always used contact cement to instal the stuff and never had any recalls.

Did it appear to be glued down? From the pics it's hard to tell if there are wrinkles or those are "stains" from the shingle.

[Ben H]

I couldn't get down to it. The pitch was so steep I had to straddle the ridge just to take the pic. Those are wrinkles/bubbles in the rubber, not stains.

[ericwlewis]

well then like you and Bill K have said no experience and probably crap. there's no way to tell if they've run it up under the shingles far enough and the wrinkles/ bubbles are going to wear faster. I bet Holmes would tear it out just to make sure it's wrong. LOL

[Inspectorjoe]

Also, it looks like it might be unsupported where it discharges onto the shingle roof.

What's the purpose of the dummy dormer, other than to look goofy?

[Marc]

Also, it looks like it might be unsupported where it discharges onto the shingle roof.

What's the purpose of the dummy dormer, other than to look goofy?

It's probably just a bad case of dormeritus. No cure that I know of.

Marc

[Chad Fabry]

It look like poorly installed epdm and the architect should be shot- what a ridiculous design. Here, it'd be an ice dam from November to April.

[Ben H]

Yeah, when I checked for felt paper on the roof, none to be found. I can't imagine they took the time to install the rubber correctly, or even semi-correctly if they couldn't do something as simple as a felt. Thats what 550,000 will get you these days.

[Tom Raymond]

I bet Holmes would tear it out just to make sure it's wrong. LOL

Nope. He'd swear it's wrong and that the whole roof would have to come off, then his roofer would just go up there and caulk it.

[John Kogel]

I may never have seen a properly installed EPDM membrane, because I've never seen it glued down so that it can't move.

There are special glues available, but the roofers keep forgetting that little detail. Here's a couple of pics of shameful use of EPDM roofing.

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[msteger]

My first impression was also EPDM.