Let’s be very honest.  Home builders generally do the cheapest job they can, with the cheapest materials possible.  Chimney tops of wood  chimney chases are frequently an area that builders cut corners.  As you can see from some of our photos, builders piece together aluminum, galvanized steel, and tar to create a waterproof top for your chimney.  These cheaper methods of chimney chase top construction consistently fail, and along the way to failing, the galvanized metal gets corrupted by acid in the chimney gases to create a rust that cascades down the outside of chimney chase, creating a very unsightly stain on the siding of chimney chase.  Our one piece Stainless Steel Chase Covers, which we have manufactured custom to the size of your chimney, are the perfect solution to this problem.