Solutions & Prevention

Fitting a chimney with a properly sized liner is the best line of defense. This ensures good draft by preventing flue gases from expanding and cooling. The warm, buoyant flue gases exit the chimney faster and have less time to leak into a home or condense on chimney walls.

Water vapor in flue gases cannot be eliminated, but the amount that condenses in a chimney can and must be reduced. By properly sizing and then insulating chimneys, that goal can be achieved. Any remaining water must be contained within an air and watertight conduit. Porous masonry chimneys, chimneys with jointed clay tiles or interlocked stainless steel liners cannot do the job.

        With a VENTINOX Lining System                 Without a Chimney Lining System

Keeping water inside the liner inhibits further damage to masonry walls from freeze and thaw cycles and corrosion. However, to contain the corrosive moisture, the chimney liner must be made from a material with superior corrosion resistance. Traditionally used aluminum and stainless steels are not suitable for long term exposure to acidic condensates.

VENTINOX stainless steel chimney liners are specifically designed to solve problems which may occur in gas, oil or solid fuel chimneys. Available in 3"-12" diameters, VENTINOX can be formed to any chimney shape, making proper sizing possible. VENTINOX is non-porous, leak-proof and may be insulated, perfect for reducing and containing condensation. To combat corrosion, VENTINOX is made from alloys recommended in the Gas Research institute Study for use with modern heating equipment. No other liner on the market comes close to matching the superior quality and established long term performance of VENTINOX.

VENTINOX is a registered trademark of American Boa. Inc.

In the National Fire Protection Association Standard for Chimneys, Fireplaces, Vents, & Solid Fuel Burning Appliances (NFPA 211).

In Chapter 10, maintenance section 10-9 it states: "Damaged or Deteriorated Liners. If the flue liner in a chimney has softened, cracked, or otherwise deteriorated so that it no longer has the continued ability to contain the products of combustion (i.e., heat, moisture, creosote, and flue gas), it shall be either removed and replaced, repaired, or relined with a listed liner system of other approved material that will resist corrosion, softening, or cracking from flue gases at temperatures appropriate to the class of chimney service."