Going through the design stage of an addition with an architect- he keeps forgetting I want a wood stove. It will be in the interior of the house. How far does pipe have to be from a wall, if not encased in masonry? If I need to put the liner toward the back of the roof, and have to angle it, and it's only one story- I assume that straight is best, but if that's not possible, then shallow angles (no more than 45 degrees) is preferred for cleaning/creosote purposes, correct? Should I try to work harder on getting the design around the wood stove to come first?