Kelly Howard
5/2/2015
I have a mid 70's 24x40 manufactured home with a 2/12 pitch. This roof has full length soffit venting. before I had the roof replaced I had insulation blown into the attic equal to R30. The insulation is not blocking the vents. It had a metal over comp. existing that I had replaced. It did not leak but was old. The New roof was done with vapor barrier over the sheeting and 2x4 to stand off the metal roof. Now every time it rains I get water dripping out of my bathroom vents. ( If it rains 4 hours I get about a half cup of water dripping on the toilet.). The contractor has used large amounts of caulk around the vents and on numerous screws. This is a dry climate that sees cold winters. Any ideas on how to take care of this would be great.
Dick Bus
5/2/2015
if it only leaks when it rains that suggests a flashing problem. I assume the vents are up through the roof. How soon after it starts to rain does the dripping start? Can you post a close up of the flashing detail around the vent stack?
Kelly Howard
5/3/2015
It usually has to be raining for an hour or more. It seems like the water builds up on the vapor barrier and when it gets to a certain point it rolls over a lip and starts dripping. The contractor used NP1 urethane adhesive caulk to the panel seams so they can't be taken up to look at what the problem might be. Here's a photo of the vent. Thanks
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5/3/2015
Not sure who put that boot on but they need some lessons is sealant application. I can't imagine, looking at the caulking, that the boot is done correctly.
Kelly Howard
5/3/2015
That's the second one the put on. It originally had a stove pipe style cap and the first time it rained I was told the water was bouncing off the roof and into the vent cap. So they made those brown boxes, replaced the boot and have added calk anytime they came up to "fix" the leak. Now their telling me it's condensation. I'm worried about my insulation getting wet, but they basically glued the roof panels together so there is no way to check without taking the roof off. Oh yea, the other vent looks better and doesn't leak as much but it does leak.
Dick Bus
5/4/2015
the contractor has created a dam. no amount of caulking will prevent the leaking long term. I will provide a detail later this week that will eliminate this problem.
Guest User
5/4/2015
Can you email me copies of your post and any other input you may have ? I can't seem to print the web site page. Thank you, Kelly
Dick Bus
5/5/2015
if you can e-mail me at [email protected] I will provide you with the information. thanks
Guest User
5/6/2015
Here is the detail I Promised you. Let me know if you have any questions.
Guest User
5/11/2015
Thank's again for the reply. Looking at the detail it refers to butyl tape and I've seen it referred to in roofing install instructions. What is it and does it allow the panels to be separated if necessary ? My contractor basically glued my roof panels together so I'm concerned about my attic insulation being wet after a year and a half of leaking. also in the detail it doesn't show any kind of collar or boot around the vent. Does this mean I don't need one ? Once again, if you could e-mail me this info. (our conversation and the detail) it would be a huge help. Kelly Howard

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