Inspected a house which has a natural gas fireplace which has a metal flue passing through the rear side of the roof. The flue (chase) has an arrestor cap on it. The chase extends 3' above the roof line however the flue is located less than 10' feet from the 2nd floor dormer and sits at least 8" below the top of the dormer.
My question is, are the clearance specs the same for this gas flue /chase as they are for a regular fireplace chase that being having to sit at least 2 feet above the highest structure within 10 feet of it? Thanks