Chimney Liners by Your Local Pros

About Chimney Liners

A flue liner is the channel that keeps hot gases, sparks and acidic condensate inside the chimney and away from the brick, mortar and framing around it. In many houses built during the twentieth century that channel is clay tile, stacked in sections and joined with mortar. Plenty of older homes in the region have no liner at all, just the inside face of the brick, and others have tiles that cracked in a chimney fire or from years of uneven heating.

Two things go wrong with liners here. Heat shock cracks clay tiles, because the inside of a tile heats much faster than the outside. And modern heating changed what goes up the flue. Efficient gas boilers and water heaters send cooler, wetter exhaust into flues built for coal or oil, the vapor condenses, and the acid slowly eats the tile joints and mortar. A liner can also be the wrong size: too big and the gases cool and stall, too small and they cannot leave fast enough.

Relining fixes all three. The new liner is sized from the appliance's own requirements, run in one continuous piece where possible, connected at the bottom with a tight fitting and finished at the top with a sealed plate and a cap. On an exterior chimney or with a wood stove, insulation around the liner helps keep the flue warm and the draft steady.

When to Call Us

• Cracked or missing flue tiles
• You are adding a stove or insert
• Your boiler or water heater was replaced
• Pieces of tile in the firebox
• Draft problems you cannot explain

How the Job Goes

1. Check the flue

   We find the size and condition of the flue and what is venting into it.

2. Size the liner

   The liner is sized to the appliance it serves, not just to the chimney.

3. Install

   A stainless steel liner is run from the top and connected at the bottom.

4. Cap and test

   We cap the top and confirm the draft before we leave.

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Questions About Chimney Liners