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Metal shingle repair - Possible in the field?

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May 16, 2015 at 10:17 a.m.

clvr83

This guy got a metal shingle(Tamko?) installed about ten years ago by the local lumberyard, they hadn't done one before and can't stop the leak. Been leaking since day 1, or close.

Am I going to be able to use a zip tool and not completely wreck the upper shingle? Stair stepping up the chimney/siding wall seams VERY tedious.

Problems: -Leaking on long side of chimney, but it could possibly be coming from the upper cricket or siding upslope from it. -Skylights leaking slightly in the middle and little bit on both sides. They were replaced in 1995 when he got a new asphalt shingle roof that only lasted ten years. -Decking popped up in two spots, one can be seen to the upper left of the skylights.

I haven't walked the roof yet, too slick. Going back more prepared next week. Will be installing some anchors for him as well.

May 16, 2015 at 1:04 p.m.

bdub

Oh boy! My 2cents probably wont help much cause i usually tear off stuff like that. I can say though that i tried to repair some copper shingles similar to those and wasnt able to. I ended up having to take them off and once i did, the foot traffic over the years smashed up the locks on the seams and we couldnt get them to go back together in a way that made us feel comfortable so we replaced them. I was surprised, thought i could do some surgery for sure. Not to say those shingles you dealing with are the same though.

I dont like the flashing detail and not sure it could be done much better. Some of these products are designed in a way that limits our detail options. For the skylights, i would yuck them all out, raise them all up as one enough to get a cricket behind them then close it all in as one. That would take a lot of time and money though. If the budget called for repair on this one id get a couple cases of vulkem.

May 16, 2015 at 8:36 p.m.

clvr83

Oh wow, that's a good point about the locks. You can see that a lot of them are dented, too many goobers trying to caulk it. I might have to try that though, because we all know that even a caulk job is much better with the right applicator. That decking pop will have to be addressed, but maybe not this year if I can stop the others without pulling panels.

I know I could buy a Wasco skylight that would be a one shot deal and just flash to the curb, I bet I'd have to set it up there with a boom truck or four guys. Other than that, I would think this would be a standard kit from Anderson/Velux to interconnect.

It would have to be a low pitch cricket, or else your getting a pretty high curb.

Lawyer & judge couple, but I don't care who you are, it sucks to replace an asphalt roof after 10 years, then a metal roof after ten years.

May 16, 2015 at 8:37 p.m.

clvr83

Also, he had the siding removed from the chimney before this and had the stone installed. The weight caused problems with the foundation and he had to pay $15k to get that fixed!

The joys of being a homeowner.

May 16, 2015 at 10:17 p.m.

Old School

Clover, That is one reason to use the Metro shingles as they can be "unzipped" and removed if need be. You know that now though.

It looks like their flashing against the wall and the chimney if that is what I am seeing consists of a good caulk job. Very suspect for sure, especially where the stone and siding come together. I would bet if you can tear that apart you will find water beneath it. Also, on the skylight, I would consider replacing the step "U" shaped flashings between the lights and putting in one single piece. that is normally what you see with the velux units and properly installed they don't leak. They had problems with it before as you can see that they installed a single flashing across the top to try and keep the water out. You will also notice that there is a lot of debris between the top two higher units as the water can't wash down between them to clean it all out.

Finally, I will bet you a nickel that the "pops" are caused by improper ventilation as I don't see much there. Heck, if they are a lawyer and a judge, they should just sue someone. that is the normal progression of things anyway!

May 16, 2015 at 10:43 p.m.

twill59

I'm with bdub. At the end of the day, you'll be wishing you just started from scratch.

Gotta love that backwards cap

May 16, 2015 at 11:02 p.m.

clvr83

OS: He usually gets the debris cleaned out of the skylight yearly. It's mainly leaking on one side, but does leak some in the middle and has leaked on the other side. I agree about the middle flashing though. Also, very perceptive about the venting. I hadn't attributed that to the decking pop or other issues.

Tom: I keep going back and forth on that. I've never torn off such an expensive roof! Backwards cap: I'm assuming the cricket looks backwards, but it might be the angle. I took that picture with my arm extended around the chimney because I couldn't see the cricket from the ladder.

If I do tear it off, I might suggest Insprire fake slate. I've been wanting to try them out.

edit: Okay, I have torn off that expensive of a roof, just not so new. Forgot about the clay and concrete tiles we have ripped before.

May 16, 2015 at 11:04 p.m.

clvr83

OS: The installer(contractor) was a client of his who he was helping with a divorce. They suggested the metal even though they had never installed it. Not that I can blame them for trying something new...

May 17, 2015 at 7:22 a.m.

twill59

Tough job to trying a new product on.

We will bend our our own gutter in the middle for the ganged skylights. Velux is extremely expensive and by doing it in the field, we don't have to make our best guess and then order.

They really get you with their trim coil prices....and you can't match their color. Usually it's not visible and "close" will work. If not, buy from Velux.

May 17, 2015 at 7:25 a.m.

twill59

Don't be afraid of tearing this thing off CLOVER. Metal roof failures are the wave of the future. Hell I tore off one of my own!

Look at this way: The same people who cannot competently put on an asphalt shingle roof, are now promoting "Lifetime" metal roofs, selling and installing them.

Good Luck John Q. Public is all I can say

And of course, the cheapest possible product is going on thousands of buildings as we speak. There is a thriving market for defective coils out there I've been informed

May 17, 2015 at 9:23 a.m.

clvr83

I'll probably make an attempt

"We will bend our our own gutter in the middle for the ganged skylights"

I'm assuming gutter just means big flashing pieces. For a second I pictured something more complicated.

"the cheapest possible product is going on thousands of buildings as we speak."

I just ran a public radio ad for my business. I was thinking about revising it to say "this is a public service anouncement by Clover Roofing: Pole barn roofing is not a life time roof!"

Not sure if that would really help my business though, could be perceived wrong.

May 17, 2015 at 12:39 p.m.

twill59

It's just a U- shaped piece of flashing Clover.

Yeah it's hard to put some truth out there without sounding sarcastic, envious or bitter

May 17, 2015 at 12:55 p.m.

clvr83

U shape going horizontal, do you let it drain in between each one or send it out the ends?

May 17, 2015 at 3:23 p.m.

Old School

Clover, the problem you are going to run into is that the skylight flashings from Velux or any of the other brands are not set up for the metal shingles like that. the step flashing on the sides are designed to go between the rows of shingles and not underneath the metal shingles. the shingles don't have any head lap. On a "ganged" system like that, you order the flashings with the lights and they are engineered to beat the band. Everything fits perfectly, and all of the pieces have little indentions in them so that there is no overlap and no high spots. Looking at the pictures, they just reused what they had and caulked the heck out of the sides. You could just get some of the wall flashings for the metal tiles and install it next to the skylight and counter-flash with a new Velux package. I would replace the flashings as they are old and a mess. There is a reason they are expensive, as the dies cost a lot of money to make.

May 17, 2015 at 3:51 p.m.

clvr83

I think they are Anderson windows. The type with the rubber gasket going over whatever flashing is there. They added that top diverter after the leaks started, hoping it was a volume issue.

I was planning on replacing all the flashings, but I'm getting discouraged about getting these shingles apart, especially in a step-pattern. A guy on another forum basically said it wouldn't be fun, and might not work. Same thing here.

I'm going to walk the roof this week so I can get up close and personal with the problems.

May 17, 2015 at 4:35 p.m.

Old School

I did one like that before. the only way to do it is to take it apart from the top and then put it back together again. Not fun! One reason I like the Metro's (again) Anderson hasn't made skylights for a few years. Good luck getting anything to match up.


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