Flue Liners are what contain the products of combustion. When old clay flue liners become compromised it is time to replace them with either Stainless Steel liners, Aluminum liners, or Heat Shield cerfractory Flue sealant. Stainless steel and aluminum liners are typically used when the flue cannot be repaired with Heat Shield. The Heat Shield system can be a less expensive alternative to relining flues when applicable. At A-1 Safety Chimney Service, Inc. we are lining experts ready to tackle your relining needs. Call us today to set up a consultation at (630)827-0600.