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Old 02-04-2017, 09:05 AM   #1
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Vent cover install question

I'm looking at installing a vent cover this spring. I was planning on using the brackets that come with it however the dealer here says that it will loosen up over time from vibration etc. They prefer to fasten it right to the roof instead. I'm worried about them fastening to the roof that it may eventually leak. Need some feedback.
Thanks.
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Old 02-04-2017, 09:11 AM   #2
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I'm looking at installing a vent cover this spring. I was planning on using the brackets that come with it however the dealer here says that it will loosen up over time from vibration etc. They prefer to fasten it right to the roof instead. I'm worried about them fastening to the roof that it may eventually leak. Need some feedback.
Thanks.
I used the brackets. On mine, you drill four small holes, one for each bracket, into the flange around the existing vent. The cover was held on by screws with lock washers/nuts. I suppose over time they could loosen, but I would just check them once a year or so. You could also put on some threadlocker if you are concerned about them loosening up.
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Old 02-04-2017, 09:11 AM   #3
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All the covers we've installed on 3 RVs over the years have never came loose, we buy them for $19 each at Walmart.
We would rather risk the loss of a cover as opposed to more holes in the roof and potentially thousands of dollars in water damage.
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Old 02-04-2017, 09:43 AM   #4
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I would not let him install them that way. The fewer roof penetrations, the less chance of leaks.

I used small bolts with nuts on the inside of the flange. Check them for tightness every year or so. I had them on 2 other campers with nothing but sheet metal screws and they did not come loose.
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Old 02-04-2017, 10:44 AM   #5
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If you're concerned about them coming loose, use lock nuts with the plastic inserts.
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Old 02-04-2017, 12:58 PM   #6
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use lock nuts with the plastic inserts.
That's what I did in tandem with lock washers:

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Old 02-04-2017, 01:17 PM   #7
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No way I'd let them fasten it to the roof. I've never even heard that mentioned before...
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Old 02-04-2017, 06:44 PM   #8
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The standard mount allows any water that gets thru the vent opening to drain out around the bottom. As others have suggested, the fewer holes in the roof the better. Also as suggested use the nylock nuts or threadlock (loctite) to attach. Check the brackets for any looseness during the periodic roof inspection (you'll need lap seal additions several times before the mounting bolts need tightening - if ever). I've installed a cover on both units we've owned and never had a problem. I'm also a fan of the MaxxAir cover, but that's just me.

If you will have the roof inspected I would look for another service shop.
IMHO, bad advice.
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Old 02-04-2017, 06:52 PM   #9
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Yep, everything have being said I want repeat it but I know this I wouldn't let them do it, I did all three of mines a few week back and it was simple, just four 3/16 holes around the flange of the vent (not the roof) and it's a done deal.

This was one of the best mod I did.
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Old 02-04-2017, 11:20 PM   #10
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I'm trying to follow their logic. Why bolts through the side might come loose but not into the roof? It seems whatever they were going to do down they could do sideways.

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