What's weird is the new panel to the left (not in pic) has a slight wave but no leaks) and the 2 roof panels that were replaced on the other side of roof lay pretty flat. I paid 80 apiece for roofing material and 800 dollars to have 4 sheets installed on my roof and here I'm having to fix it. I just wasn't sure about trying to replace them myself but am certainly having to get up there to repair it. UGGGG! The screw I'm thinking of installing will just be in the 2 sheets-no wood underneath but I could add a piece if the screw doesn't hold. I wonder if they weren't careful when they installed them and put too much pressure on old sheet and bent it but picture sure does show it's deformed but pic shows it looking worse than it really is. The pic compresses the roof quit a bit.
It definitely looks very wavy in that pic, just can't tell if its due to screws or bent.
The pic may be deceptive as I had the camera in night mode and it might have combined 2 pics and created some distortion. I looked at it from underneath a few minutes ago and it looks fine. I can push the old panel up to meet the new panel where it's lifted and it won't take much to make that happen. I'll probably get on the roof tomorrow morning. I just need to put my extension ladder together and have my wife help me. The problem with putting a piece of wood up against it is my 10 ft step ladder isn't tall enough and my extension ladder can't be put in the proper location to reach roof from underneath. I told my wife she may have to get on my step ladder and push a board against roof so the screw will grab the lower sheet I'm trying to pull together.
That sounds like a decent plan.
What He Said, For a "Quick and Dirty Repair you could brush on a adhesive coating, lay down some fabric and apply another layer of adhesive coating.
This is only 1/4 inch high ribs spaced 1.25 apart. They are lapped correctly and I looked this morning (waiting until the dew is gone to get on roof). I will remove the screws on the side that's "bulging" and see what's going on. They pulled them through the opening from the bottom and on an 18 ft 26 gauge metal they may have bent them. I have a tube of through the roof sealer I may use. Non of my other sheets are sealed that I know of. The wall sheets have same overlap. I call it 1 1/2 overlap.
I suspect that’s correct. I have never seen sealant at the laps used here on regular pitched roofs.
My roof has been up since aprox. 1970 and only shows some signs of rust except where the shorter panels were above and below the translucent panels I removed and replaced with the new sheets. A few of the panels looked at some nails under high rainfalls and wind. But I do have the same sheets (different brand and possible thinner) over my wood shingles on my shop (an old chicken house) since aprox. mid 80s and still not leaking but did have to screw a panel or two down but they are rusting somewhat and I painted them 3 years ago but starting to poke through again.
Different climate. I doubt if you regularly have heavy snow accumulation that results in the melting I described. Our roofs typically shed a couple times in early winter, maybe once in January, then sit under a couple feet of snow until the sun stays longer in mid to late March. That’s when the melting from the ridge starts, and the ice jacking of the screws begins. Sometimes the final shedding doesn’t happen until April.
I'm sorry to hear about the persistent leak issue on your new roof panel. It's concerning that one section doesnt align correctly with the old roofing potentially causing the problem. Adding a screw in the area where the sheets are separated could be a temporary solution but it's crucial to address the root cause of the misalignment. Roofers may have not installed the new sheet correctly or there could be underlying issues with the structure. I recommend reaching out to a professional roofer to thoroughly assess the situation identify the source of the problem and provide a lasting solution to prevent further leaks and ensure the integrity of your roof.
I'm concluding that the gaps weren't really to blame but capillary action of water pulling water into bottom panel where a screw goes through 2 panels. I've been pulling up edges of some panels where leakage has occurred and cleaning out dirt which can cause capillary action across ribbing and sealing bottom panel screw holes with sealant and rescrewing. I doubt that the roofing crew knows more than I know at this point.
