Dryer vent, roof or side wall?

Question

I live in a house that the dryer wall backs up the the kitchen. It has no vent now and has'nt since 1962. Anyhow I can take the vent thru the ceiling then the roof which is about 2 foot more or I can go thru the ceiling then a 90 and then out the side wall which is about 8 foot with a twist or two. What's my best bet?? Thanks

Answer 1

The 90 will cause lint to build up in the bend. After awhile it will clog the vent pipe. Go straight up through the ceiling. I did mine that way and have no problems at all. If you put flashing around the vent where it comes out of the roof, you shouldn't have any problems.

Answer 2

You don't want this venting to the roof.  Do the 90 degree turn and out the side wall.  You can use readily available parts going this route.

Use as little of the flexible piping as possible, going with the straight steel piping.  Much better airflow, much reduced lint build-up.

Answer 3

You want to vent it outside and the vent pipe should go downhill slightly.  Otherwise you will get a lint build up, as someone else said, but if there is an upward bend in the tube, moisture will college and that ain't good.  

I saw one that was vented into the attic one time and there was enough lint up there to insulate the house.  You don't want that!  Lint burns light wild fire and the firemen at the nearest station can probably tell you tales about that.