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Residential
AHRENS Chimney Technique
2-LINER PROCESS
THE FIRST LINERTHE FIRST LINER STRENGTHENS AND INSULATES

The first liner strengthens as a result of the special masonry mixture being mechanically forced horizontally into your existing chimney walls. The first liner fills every crack and crevice creating an interlocking bond. The excellent insulating effect and proper flue sizing of this liner keeps flue gases warm, reducing condensation no matter what fuel is burned.


2nd LinerTHE SECOND LINER SEALS AND PROTECTS

The second liner cures to a thin, hard, glaze-like finish that seals and protects the first liner. This resists absorption of harmful acids or moisture. Because the second liner is very thin, it heats up quickly, minimizing condensation.

Each second liner is created in a single pour - no matter what the chimney height or diameter. That means there are NEVER any seams to break, joints to split, tile to crack or metal to rust.


Oblong Shaped FluesOBLONG SHAPED FLUES
Top View
The Ahrens System is not limited to round flues only. Rectangular chimneys sometimes require an oblong-shaped flue. Your Ahrens dealer has access to hundreds of oblong shapes to assure proper sizing for your appliance or fireplace.
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AHRENS Chimney Technique