dryer exhaust without backdraft damper?
The previous homeowner had a deck built over the dryer exhaust. The deck is low enough that I can't climb under it, and the deck supports are blocking any view of the exhaust.
However, I removed the exhaust tube from the inside and was able to feel around with a screwdriver that the exhaust seems to just be open, with no backdraft damper.
The way I see it, I've got 3 options..
1) Leave it as-is, and continue to exercise caution when using the dryer (don't run it while sleeping, etc.) in case a critter should build a nest in there and a fire should start
2) Pull up some deck boards and add a backdraft damper
3) Cut a hole in the deck and extend the exhaust. This will create more sharp angles in the exhaust flow (to curve it up through the deck and then back out horizontally/downward so it doesn't take rainwater.
Any advice here on the best option? Does the backdraft damper even do anything to stop animals from nesting?