I had a hall laundry closet made but the contractor did not put in a vent for the dryer. The closet is on the first level of the home in the middle from front to back and about 15 feet from the side exterior wall. I can go through the floor and ceiling in the basement and out the back brick or I can go up and out the attic. Either way I have to cut through flooring which I have never done. This is all new to me but I am learning many things after being married 33 yrs and now on my own. I can do it I just need to know which would be best. Thanks Karen