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.
Chimney liner cost can be surprising. There are a variety of factors that play into how much a chimney reline with installation costs, including your area of the country, but on average the cost to have your chimney professionally relined runs anywhere from $2,500 to $5,000.