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TOPIC: General Discussion

New Metal Roof Issues

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We had a metal roof installed last summer. Our home is a 1.5 story, with finished attic. The roof has a pretty steep pitch. It has not yet leaked during rain storms. It did leak once this winter during a snow storm, it appeared as though wind blew snow up into the open ridge cap. My finished attic has a lot of water damage. I began today doing research on the internet, when I found this forum. I think the roof may been installed incorrectly in several respects. Before I talk to the contractors again, I need to know facts. I hope you can answer some questions I have. First, regarding the ridge cap. From what I have seen on the internet, the ridge cap cover for a vented ridge cap appears to actually go into the opening and has a foam type insulation/barrier under the cap. Our ridge cover has no foam barrier nor does it insert into the open ridge cap. The cover is basically an L-shaped or bent piece of metal that runs the length of the roof and has been screwed down. The contractors told us they would have to cover our existing whirly birds, I told them I had to have some type of venting due to the heat. So they cut the ridge cap opening. After the entry of snow/water I thought they may have cut the opening to wide. Is it considered typical practice to do install as I have described over an open ridge cap? Research has also made me question whether the installation of the roof itself was installed correctly. The reason a metal roof was installed as our house is older, asphalt shingles will not stay on due to pitch, and decking is very hard (barn?)wood. The current method used, stapling shingles was not sufficient. The staples did not penetrate the wood. Shingles would blow off as well as slide down with summer heat. The metal roof was installed over the asphalt shingles. Is it correct or will we have problems as the contractors did not use wood slates. I asked about them and they stated the wood slates cause more problem as wind gets under the metal and loosens the screws as well as the metal will dent easier if walked on, branches hitting it, etc. So, they screwed the metal roof directly to the shingles. I appreciate your time taken to read this as well as hopefully offer me some expert advise which will help determine what I need to do to fix the current issue and prevent any possible future problems. Sorry for the long explanation! des5034
Desiree Hatfield

4/27/2010
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There are different methods of doing ridge vent and it sounds like yours could have been done better. Can you contact the roofing manufacturer for advice? Installing over the old shingles is not unusual. I would have suggested a layer of underlayment over them first. Feel free to send me pictures if you wish for further input. [email protected] Todd Miller
Todd Miller
Isaiah Industries, Inc.

5/4/2010
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THERE IS A PRODUCT CALLED PROFILE VENT WHICH CANBE PUT DOWN UNDER THE RIDGE TO ELIMINATE BLOWING RAIN AND SNOW FROM COMING IN UNDER THE RIDGE. BEST OPTION WAS TO REMOVE THE WHIRLY BIRDS AS THERE IS NO GOOD WAY TO FLASH AROUND THEM IN A METAL APPLICATION. INSTALLING OVER SHINGLES VERY WELL COULD CAUSE PROBLEMS WITHOUT UNDERLAYMENT. THINK OF IT AS PUTTING IT DOWN ON SANDPAPER
Guest User

5/12/2010
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Or copy this URL: https://www.metalroofing.com/spirit/comment/14702/find/
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