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Old 11-12-2012, 02:17 PM   #1
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Dryer ducting wear & tear


I was just wondering about this and wanted some feedback. A dryer duct connection from dryer exhaust to the vent can be of 3 types I believe:
  • flexible ducting (like alumnimum foil slinky)
  • semi rigid ducting (bendable but hard metal)
  • rigid (non bendable cynder) duct

and where 90 degree elbow connectors are rigid metal as well.

the flexible ducting can rip with holes overtime and can burn up if exposed to flame.

I was just wondering how well the semi rigid and rigid ducting hold up against wear and use over time, and exposure to fire. Do they wear at the joint connections where you clamp down the duct to an elbow or endpoint?

Do they crack with a line or hole, do they burn easily, etc.?

Or are semi rigid and rigid ducting quite maintenance free once installed besides cleaning them of lint? Also do they hold up well to lint cleaning via drill/vacuum attachment inserted into the ducting from the vent opening at outside of house? (I'm assuming lint cleaning of a flexible duct could end up damaging duct ripping a hole, etc.)

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Old 11-12-2012, 02:54 PM   #2
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Dryer ducting wear & tear


Try to avoid using the slinky foil stuff it at all possible.

No more than 2 90's....and I think the max distance is 14'.

It at all possible, go rigid. If you follow the typicaly male/female connections....there is no real place for lint to get trapped. Nothing wrong with taping any connections with foil tape. Don't use duct tape.

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Old 11-12-2012, 06:38 PM   #3
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Dryer ducting wear & tear


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No more than 2 90's....and I think the max distance is 14'.
thanks ddawg16. what happens when you have more than 2 90's? With my setup if using all rigid, I would need 3. With semi rigid, the bending of the rigid will replace one 90.
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Old 11-12-2012, 06:54 PM   #4
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Dryer ducting wear & tear


if you use hard pipe 3 90,s will be ok
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