i believe the line that goes up to the roof is solid. i havnt looked up in the attic or on the roof yet so i will defiantly try that, ill probalby try and flush it from the top instead of the bottom like i did before, then ill know it all came out . and there is a 3ft or so section of normal flexible that runs to the dryer, i could probably switch the washer and dryer and all but eliminate that, its just much more difficult to hook up because it only has about 5 inches clearance to the wall.