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Question DetailsAsked on 10/2/2013

Roof exit venting for Dryer? Are there different types of vents for roof outlet for hot air?

Hello! We just got our roof replaced from wind damage, via contractor connection via my insurance. Since then, it doesn't seem like the dryer is 'drying' as well as it did before the vents were replaced with the roof.

We remove the rear vent from the wall, and the dryer seems to do just fine on drying clothes - but it puts moisture and lint back into the air - not a desirable long term suggestion. I have taken a lint tool and cleaned the full length of the pipe - it took two kits, but I know the pipe itself isn't blocked.

Did the roofers who replaced my room, unintentionally put a 'low flow' vent on the hot air exit pipe (?) on my roof, that impedes the flow of hot air?

We are getting lint on the other side of the trap, and we know the dryer is working, my only conclusion is the pipe exiting the roof it blocking the airflow.

Any help would be greatly appreciated.

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Voted Best Answer

Yes there are roof vents with less resistance to air flow. It's unlikely that you old one was this type.

It's more likely the roofer used a type that is wrong for a dryer, has a stuck "back flow damper",or has a "bird screen' . In the case os the "bird screen" type would take a while to clog. Are you sure the roofer cut a hole through the roof, check in the attic.

Most all dryers can only handle 25 feet of vent pipe, and each elbow counts for five feet.So do the math and see where you are. There are also low resistance elbows on the site below.

This site has every thing you need to improve your venting system, better air flow results in shorter drying times and energy savings!Check it all out.


Answered 6 years ago by BayAreaAC

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