I see this on 90% of houses with a new roof around. The roof dryer vent does not have a bottom collar/pipe for the actual dryer vent to connect to and they end up just taping it or not connecting it back at all. Is this tape job an acceptable way for the dryer to vent to the roof? In my mind there’s no way. (Ignore the hole it was caused by me looking at how this was actually connected)
Here in South Florida, the tube extends past the roof line and it is spray-foamed in place with a metal strap connecting it to the truss. Is there even a hole there?
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yes there is a hole but it taped all around it
Mastic is sometimes used over the tape around here. Often there are other more pressing issues.
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Do not damage anything!
Just by looking at the dry vent in the attic I would report it as suspect and call for further evaluation by a licensed ventilation contractor.
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Honesty, they should end the whole “dryer vent on roof” deal altogether. Nobody cleans the lint out, and they are susceptible to leaking and becoming disconnected.
One from earlier this week. Luckily, it was a fairly new home with just two inhabitants, so not much moisture damage was done before being caught.
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Flex used on dryer vent? Not good.
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I’m not sure what type of piping was under the insulation, but my guess is it was rigid flex with a smooth interior.
One can see the frost and then the warmer zone that melted the frost since I had ran the dryer prior to entering the attic…
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I agree fighting gravity seems crazy.
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So what I think I’m writing this up for is an improper roof vent for the dryer. It seems like the tape allows dryer lint to escape where they dryer vent and the roof vent meet due to the tape not providing a proper seal. You can see where the lint is spilling out onto the roof decking in the pictures. It seems like the roof vent should have a stub coming from it to remedy the situation.
Honestly, I would just go with “exhaust vent leaking into attic.” Keep it simple. Put it on the contractor to figure out how to make it stop leaking into the attic. Your picture confirms that it is leaking, that’s all that matters on your end.
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There shouldn’t be any type of screen at the dryer vent termination.
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If you just report what you see and recommend correction, I think you’ll be fine.
Dryer vent to dryer vent termination connection is failing and dryer lint is leaking out. I recommend correction by a qualified ventilation professional as needed for safe operation.
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I think I found FBC that mentions how it should terminate
M1502.4.2 Duct installation.
Exhaust ducts shall be supported at intervals not to exceed 12 feet (3658 mm) and shall be secured in place. The insert end of the duct shall extend into the adjoining duct or fitting in the direction of airflow. Exhaust duct joints shall be sealed in accordance with Section M1601.4.1. Ducts shall not be joined with screws or similar fasteners. Where dryer exhaust ducts are enclosed in wall or ceiling cavities, such cavities shall allow the installation of the duct without deformation.
I agree but I think my curiosity is killing me here 
. it always seems to be the fly by night roof companies that I go behind and they have a rats nest of tape “connecting” the dryer vent to the roof vent. I appreciate the input from everyone 
I agree. I am looking more at the bottom of the vent where the pipe comes down.
Most likely the HVAC subs.
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