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 The cost to repair a chimney crown will depend on the size of the chimney and how easy it is to access the chimney. 2  Depending on the severity of the job, the average cost of chimney crown repair will range anywhere from $400 to as much as $2,200. If the chimney crown is extensively damaged, it will often have to be rebuilt. 2  If this is the case, you will be looking at a price closer to that $2,000 range. 3  However, if the chimney only has smaller hairline cracks, then the repair could be as little as $400.