Chimney Relining / Liner Installation

Restore a Proper Venting Path

When an existing liner is cracked, damaged, missing, disconnected or unsuitable for the appliance, a replacement liner may be required.

AirPlease Missouri Chimney Services installs chimney liner systems based on the appliance, chimney configuration and conditions found during evaluation.

Why a Chimney May Need Relining

• Cracked, broken or deteriorated clay flue tiles.
• A chimney with no serviceable liner.
• A liner that is damaged or disconnected.
• A change in appliance or fireplace configuration.
• A flue that cannot be returned to service without corrective work.

Liner Installation

The chimney and connected appliance or fireplace are evaluated before the liner is selected. The liner size, material and configuration are determined based on the system being served. Installation may include preparing the existing flue, installing the new liner and completing the required connection at the appliance or fireplace.

Some chimneys require additional access or preparation before a liner can be installed. Those conditions are explained as part of the proposed scope.

The Liner Must Match the System

Chimney liners are not one-size-fits-all. The correct liner depends on the fuel, appliance, chimney height, flue configuration and other conditions. AirPlease Missouri Chimney Services evaluates those factors before recommending a liner system.

Why a Liner Matters

The liner creates a defined passage for combustion products through the chimney. Different fireplaces and appliances have different venting requirements, so the correct liner depends on the system being served.

Clay Tile and Stainless Steel Systems

Many older masonry chimneys use clay flue tiles. When those tiles are badly damaged or no longer serviceable, a stainless steel liner may be one repair option depending on the appliance and chimney configuration.

Preparing the Existing Flue

Offsets, broken tiles, restrictions and limited space can affect installation. Some chimneys require additional preparation before a correctly sized liner can be installed.

Connections and Termination

A liner installation includes more than lowering material through the chimney. The lower connection and upper termination must be completed for the specific fireplace or appliance being served.

Why Liner Sizing Is Technical

A liner is not selected simply by choosing the largest size that fits. Fireplace opening, appliance input, connector configuration, chimney height, fuel type, and manufacturer requirements can affect the needed venting area. Incorrect sizing can contribute to poor draft or venting performance.

Insulated Stainless Steel Liners

Depending on the application and chimney construction, a stainless steel liner system may use insulation around the liner. The appropriate liner type, insulation method, and listed components depend on the system being served and the installation conditions.

Existing Clay Tile Removal

Some chimneys have enough space to install the required liner within the existing flue. Others may require removal or modification of damaged clay tiles to create the needed passage. That decision can only be made after measuring and evaluating the actual chimney.

NFPA 211, Listed Liners, and Manufacturer Instructions

NFPA 211 addresses chimney lining systems as part of chimney construction and repair. Stainless steel relining products are also installed as listed systems with specific manufacturer instructions, components, sizing limitations, and installation requirements. That means the correct liner solution depends on more than diameter alone. The fireplace or appliance being vented, fuel type, chimney construction, clearances, insulation requirements, connectors, and termination all have to be considered together.

Frequently Asked Questions

Install a Liner for the Actual System

Relining is not a one-size-fits-all chimney repair. The fuel, appliance or fireplace, flue dimensions, chimney height, existing liner condition, connections, and available space all affect the correct solution. A liner should be selected and installed as a complete venting system, not simply as a piece of metal that fits down the chimney.