We generally see piping extend up the side of the house and route exterior around the soffit as well as gutter, airing vent above the roof edge. Sometimes we see a system that does not expand right up the wall surface, but as long as it does not vent near an operable window, that is acceptable. You do not desire radon being vented from the reduced degree, then simply blowing back right into the home through an open window. See to it this piping remains in excellent problem and also the departure point is not obstructed at all.