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.
For example, Davidâs Chimney Cleaning Service in Springtown, Texas, offers the following prices per duct: 1  $25 per register/vent. 2  $35 per return. 3  $45 per indoor unit. â 4 $75 per outside unit as needed.