If the coil is located on the back of the zipper instead of the front it is an Invisible Zipper. Metal zippers consist of individual metal teeth. They are typically made from nickel, brass, aluminum and manganese.
Cost of Repair. The cost to re-line a chimney can be very expensive! Repair costs generally range from about $2000.00 to $4500.00 per flue or more! In a Real Estate transaction, you may have the opportunity to negotiate defects that are disclosed as part of the inspection process.
1 Repairs to chimney flashing cost $250 to $500. 2  A new chimney damper might cost $100 to $500 or more, plus installation. 3  A new woodstove door gasket costs $20 to $50 (not including installation)  Rebuilding a masonry firebox costs $750 to $1,500.