TOPIC: I Have An Existing Metal Roof and Have A Question
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Below are some pictures of what the metal on my new galvalume metal pole barn looks like. Most of these pictures are of the siding instead of the roof because it is easier for me to get to. But, the roof has similar scratches, cuts and marks like the pictures linked below. Basically, the workmanship was the same from roof to ground.
Am I being picky or will these rust? If the galvalume is supposed to last 50 years, how much less time do you think the areas that I have here will decrease in life span?
Thanks for choosing metal. It's impossible to work with pre-painted metal panels and not end up with some scratches. Most of these appear to just be down to primer or certainly not into the Galvalume coating on the steel. While these areas do pose some risk, you still have something such as at least the Galvalume coating standing between today and corrosion. Scratches like this can be neatly and carefully touched up. Be careful to keep the touch-up to a minimum as it will fade more rapidly than the current finish.
Take a look at the pictures near the corners of windows. There are metal shavings and deep grooves. You think those are ok?
I understand that you cannot avoid some surface scratches, but if almost every panel has i would say about 8-10 spots minimum that need to be patched, would you say that is standard installation or poor workmanship or...?
I have gone around to other metal buildings that are just being completed in my area done by this builder and done by other builders, and I do not see all of the scratches and marks that I see on my building. But, it sounds like you are telling me I'm just being picky?
I am sure that many of those scratches go down past the paint since there is shiny metal showing (sorry if the pictures are not great).
But, let's say that most are cosmetic, would you say 8-10 significantly visible scratched areas per pane is normal or a sign of poor workmanship?
I assumed it was normal until I visited a few other new metal buildings built in my area (some by this builder and some by other builders) that are nearly scratch free. Maybe a few tiny surface scratches were pieces came together. But, look at how the ridges that come together are bent and the overlap is digging into the underlap. Is that normal? Will not that allow water and wind to penetrate?
Again, I will take your advice if you all think I'm just too picky. I just hate how scratched to hell my building is when the one 1/4 mile away looks like it's freshly painted out of the box.
Sorry to bug you on someone else’s forum. I posted a couple days ago about metal roofing screws breaking. I would certainly value your expert opinion on a possible cause. Screw manufacture has already told me it’s not his screws, that’s before he even came to the site. I have never seen this happen. Again sorry for jumping in another post. I am just beside myself. Thank you
Devon, You have quite a bit going on as far as potential movement. As I recall, you have old timber decking and then ZIP on top of that followed by underlayment and the metal. There's a chance that is enough varying movement to snap the screws. I;d think a larger screw may be helpful. However, as I understand it, not all the screws have done this. Could it be faulty screws? Yes, and I am sure that screw manufacturers have ways of testing them for strength. I wonder ... could the screws have snapped when they were originally driven in ... perhaps when they grabbed hold of the old timber decking? Any chance these have been snapped since the roof was installed? I understand the screw company denied responsibility (doing so without testing the screws seems wrong though) but what did they then give as probably cause?
Aaron, I was concerned about some areas where I saw shavings and jagged edges. I am concerned those will likely rust. I do not think you're being too picky but unfortunately these questions of aesthetics / workmanship can become very difficult to resolve. The contractor of course won't want to replace the panels and yet the homeowner is not happy. Those are tough situations. Have you gotten the manufacturer of the siding / roofing to weigh in on the topic? They probably won't want to but they are in the best seat to possibly mediate things. One possibility is to push for repair or replacement of panels with jagged metal points / shavings showing, and also touch-up carefully applied to some areas ... and then some cash settlement on the rest of the panels. I wish you the best in resolving this amicably. I am very sorry for what you've run into. No doubt about it, they should have been more careful. I do see your concern on some of the panel overlaps and, frankly, I do not understand what happened there. You certainly could push for replacement of everything but I have a feeling that will end up being something you will need to pursue legally.
Thanks For the response Todd,
I am pretty certain the screws weren’t broken during installation, as I was the one who installed every screw. The screw manufacture hasn’t been out to look at it yet, so I haven’t received a probable cause.
The only question I have regarding the expansion and contraction of the different woods and metals is. Why aren’t people seeing a similar issue when putting a roof over existing shingle? At least in this area people lay down 1x4 and then put down metal with 2” screws penetrating the 1x4, shingles, underlayment, and the existing roof decking. I understand that no matter what the structure or material there will always be some form of movement. However I wouldn’t think the expansion/contraction would be enough to snap the screws. I would be more willing to think the metal or the zip sheathing would wallow out before it broke the screw. This is obviously my opinion, that’s why I wanted others, to see if what I was thinking could even be right. I appreciate the feed back as this is a first for me. Thank you
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