Chose your liner of choice:
DuraFlex DCS-Flex Homesaver Forever Flex
Chimney Liner Insulation Liner Accessories
We carry many different sizes, shapes, brands, grades and construction in stainless steel chimney liners including “Homesaver ( Ultra-Pro, Pro, Round-Flex, Oval-Flex, Rectangle-Flex, and Dial-A-Flex), Ventinox, Forever-Flex, Armor-Flex”, and more. The most popular items and packages are listed but we have too many items to list individually.
Please contact us for the best prices on unlisted chimney liner items and those for special applications.
There are three different of classifications of flexible chimney liners produced by several different manufacturers.
What type of stainless steel chimney liner do I need? That depends on the job. Here are some guidelines to help make the best decision for your job.
Alloy
316 Ti-alloy: made by adding molybdenum and titanium to 304-alloy. This combination gives chimney liners excellent corrosion resistance in acidic and high heat environments. Most light chiney liners are not using this alloy. Including Homesaver UltraPro, DuraFlex, DCS Flex, Foreverflex, M-Flex, and more.
304-alloy: Great for wood burning applications. These chimney liners have good corrosion resistance in flues using wood burning and pellet appliances.
316-alloy: This alloy is made by adding molybdenum to 304-alloy. This process makes the chimney liner more expensive then 304-alloy but greatly increases the corrosion resistance. This makes it an excellent choice for wood, coal, oil, and non-condensing gas applications.
321-alloy: Made by adding titanium to 304-alloy to the chimney liner, which improves corrosion resistance at higher temperatures. (Its corrosion resistance in acidic environments is not as good as 316-alloy).
AL 29-4C alloy: this is the most corrosion resistant of all alloys used. Primarily for gas applications. (Note: if the flue being lined has been used previously for oil, a stainless chimney liner is recommended as the outside contamination can quickly destroy an AL 29-4C liner).
Construction
Light - Most economical chimney liner. Moderate to low flexibility. Harder to straighten. Low crush resistance. Very light weight. .005"-.006" metal thickness. Knurled or pressed seams.
(Examples: DCS Flex, Simpson DuraFlex, Foreverflex, M-Flex, Z-Flex)
High-Performance Light - In the middle on price. Has the highest bending range. Easy to straighten. Strong engineered corrugations = Good crush resistance. Very light weight. Gas tight seams. .005"-.006" metal thickness.
(Examples: Homesaver Pro, Homesaver UltraPro, Ventinox)
Heavy - Most expensive and durable chimney liners, rugged multi-layer construction. Lower bending range. Easy to straighten. Extremely Crush Resistant. .015" metal thickness. Considered "smooth" inner wall design. Interlocked seams are very strong, but not gas-tight.
(Examples: Homesaver - Roundflex, Ovalflex, Rectangleflex, Fireplaceflex, & Dial-A-Flex. Armorflex, Premierflex)
The heavy chimney liner can also put up with the most aggressive types of cleaning where the others could not. This is not a concern when the liner is properly insulated but an un-insulated liner theoretically could develop a layer of creosote too tough to be removed properly in light style steel chimney liners. If you plan to not insulate the liner due to space issues, the investment into the heavy liner is highly recommended.
Liner Accessories
Improperly insulating a chimney liner may also void the manufacturers warranty and may not meet the criteria for the UL listing.
