Chimney inner sleeve WADEX model 125 — flue liner for 125 mm chimneys

WADEX Chimney inner sleeve 125 is a flue liner designed for chimneys with a 125 mm diameter. The sleeve forms an internal channel for combustion gases, helps protect masonry or prefabricated chimney structures from corrosive flue products, and supports stable draft. It is suitable for repair, relining or new installation in heating systems burning solid, liquid or gaseous fuels where a 125 mm flue path is required.

Advantages

The WADEX flue liner is manufactured to provide a smooth, durable pathway for exhaust gases and reduce soot accumulation compared with unlined chimneys. Its uniform diameter and material resist high temperatures and condensation-related degradation, improving chimney longevity and safety. The sleeve facilitates easier inspection and maintenance of the flue, and its standard 125 mm dimension allows compatibility with a wide range of stoves, boilers and gas appliances designed for that diameter.

Suitable for

• Repair or relining of damaged or deteriorated chimneys with a 125 mm flue
• New installation in masonry or prefabricated chimneys serving stoves, fireplaces or boilers
• Heating systems using solid fuels (wood, pellets), liquid fuels or gaseous fuels requiring a 125 mm liner
• Applications where improved draft and protection against flue gas condensation are needed

Key specifications

• Nominal internal diameter: 125 mm
• Function: chimney flue liner for channeling combustion gases
• Compatibility: intended for chimneys and appliances designed for a 125 mm flue
• Material properties: smooth, temperature-resistant liner surface suitable for hot flue gases and condensates
• Typical use: relining, repair or new installation in residential heating systems

How to use

Install the WADEX 125 flue liner according to local building codes and chimney standards. The sleeve should be inserted or drawn through the chimney flue, ensuring full contact where required and proper sealing at top and bottom terminations to prevent leakage of combustion products into occupied spaces. Connections to appliances and chimney caps should maintain the correct 125 mm diameter and provide secure seals. After installation, perform a smoke and draft test and verify clearances and supports meet regulatory requirements.

Usage recommendations

Use the liner only in chimneys and heating appliances specified for a 125 mm flue. Have installation and final checks carried out by a qualified installer or chimney professional. Regular inspection and cleaning are recommended to maintain safe operation, especially for solid-fuel systems where soot and creosote can accumulate.