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 A company that specializes in mortar repairs, Masonry-Restoration.com, provides service for chimneys, but they also provide masonry restoration for any structures. 2  Chimney re-pointing services through them can cost anywhere from $375 to $450.