Fire Test UL Listed Dryer Vent : Semi-Fail

This video is in response to some comments on my first video, Dryer Vent Installation BAD IDEA. Some viewers have said that UL Listed vent material is perfectly safe to use and that the material I showed in the video was NOT UL listed. I don't think it was, and I have no way of checking, so I bought a new UL Listed vent piece and put it to the test. While it didn't go up in flames like the first one, it did burn some and start to disintegrate enough to pose a fire threat and a carbon monoxide hazard.

[@jerrytindal608]

Put it with an S-turn....90 turn up, short vertical run, and 90 turn back horizontal. The vertical orientation and turns will substantially increase the flame spread and burning. A long enough vertical run will make it go up like a Roman candle. The turns cause the heat to deadhead and give longer residence time. The vertical orientation significantly enhances flame spread because the duct lining fuel above the flame is preheated.

[@MattKnowsThat]

Glad you agree! UL Listing or not, an ounce of prevention...!

[@williammcpherson1744]

Have you tried the dryerflex stuff? It looks like it holds up pretty well to fires.

[@yomomma9070]

Dude, if you have enough lint accumulated in anything and it ignites, then the material could become hot enough to ignite nearby combustibles-wall coverings, flooring, paper, an errant shirt that fell behind the dryer. That is why proactive folks implement some sort of a PM for equipment. And if you don't know, you ask or hire or research the info. You can't expect to run a clothes dryer indefinitely without lint accumulating nor everything in a structure to be made fire proof. You should be making vids instructing those ignorant to proper dryer maintenance and inspecting and cleaning of the dryer vent. Not buying stuff and lighting it on fire. Of course dryer lint is flammable.