Chimney Liner Installation

A flue liner does a job that's easy to overlook because it's hidden inside the chimney: it contains heat and combustion byproducts and keeps them away from the surrounding brick and mortar. Some of the oldest colonial and stone homes throughout Greenwich and lower Fairfield County were built with unlined flues or clay tile liners that have cracked over decades of use, and either situation lets heat, creosote, and moisture reach masonry that was never meant to handle direct exposure. Cold, damp New England winters and heavy heating-season use only speed up that deterioration.

Installation starts with sizing the liner correctly to the appliance or fireplace it serves and to the flue itself, since an oversized or undersized liner hurts draft and can leave a fireplace smoking into the room instead of venting properly. Flexible stainless steel liner is the most common choice for flues that aren't perfectly straight, which describes a lot of older masonry chimneys, while rigid liner suits a straight run. Either can be insulated, which improves draft, keeps flue gases warmer so they rise more efficiently, and reduces how quickly creosote builds up over a full heating season.

A lot of homes here run two separate flues, one for a fireplace and a second venting a furnace or boiler, and each needs its own liner sized to what it's actually venting. A heating appliance liner and a fireplace liner are not interchangeable, and installing the wrong type or size is one of the more common mistakes we come across on chimneys that were relined by someone unfamiliar with the difference.

Installing a liner is almost always paired with a real look at the rest of the chimney. A chimney inspection confirms whether the existing liner has failed and whether the crown, cap, and flashing are in good enough shape that the liner will actually be protected once it's in. If the inspection turns up cracked masonry beyond the flue itself, chimney repair work gets scoped into the same visit. Our chimney service in Greenwich treats a reline as part of the whole system, not a part swapped in isolation.