Chimney inner sleeve WADEX 125 mm diameter (model 125100150)

Chimney inner sleeve WADEX with a 125 mm internal diameter (model 125100150) is a heat-resistant metallic liner designed to be installed inside existing chimney flues. It serves as a smooth conduit for exhaust gases, helping to restore draft performance, seal minor cracks in masonry chimneys and provide a reliable connection point for heating appliances. The sleeve is intended for residential and light-commercial chimneys where a 125 mm lining is required and where a durable, corrosion-resistant inner surface is needed to guide combustion products safely out of the building.

Advantages

The WADEX chimney inner sleeve offers a compact solution for relining flues without extensive masonry work, providing improved flow characteristics and resistance to high temperatures and condensation. Its smooth internal surface reduces soot accumulation and facilitates easier maintenance. Installation of the sleeve helps protect the existing chimney structure from corrosive combustion by-products and can extend the service life of older chimneys by creating a stable, sealed passage for exhaust gases.

Suitable for

• Repairing or relining residential chimney flues
• Connecting small solid-fuel, gas or oil appliances that require a 125 mm flue
• Sealing minor cracks or gaps inside existing masonry chimneys
• Improving draft and reducing backflow in light-commercial chimneys

Key specifications

• Internal diameter: 125 mm
• Material: heat-resistant metal liner suitable for exhaust gases
• Surface finish: smooth internal bore to reduce soot build-up
• Function: relining, repairing and adapting chimney flues for appliance connection
• Application environment: residential and light-commercial chimneys

How to use

Measure the existing flue to confirm compatibility with a 125 mm internal diameter sleeve and ensure the chimney is free of loose debris and heavy soot. Insert the WADEX sleeve into the prepared flue, advancing it to the required depth and aligning it with the appliance connection point. Secure the sleeve according to standard chimney relining practice and local building codes, ensuring airtight joints where the sleeve meets the appliance and any transitions. After installation, inspect the termination at the chimney cap or flue outlet to confirm proper sealing and clearance for safe exhaust discharge.

Usage recommendations

Use the WADEX sleeve only in chimneys compatible with a 125 mm lining and follow local regulations for flue installation and appliance connections. Have a qualified installer or chimney professional perform or verify the installation, and schedule regular inspections and cleaning to maintain safe draft and prevent soot or creosote accumulation.