FAQLiners

Things to Know about Stainless Steel Liner Systems

A frequently asked question is “Why does the liner cost so much?” Many times we are informed of a friend or relative who purchased a liner system for almost half the cost we have proposed for a particular installation. In some cases the cost of the liner can exceed the cost of the wood-burning insert or stove. So, that’s a good question – why? In order to answer that question you need to know a few things about stainless steel liner systems.

All Stainless Liners Are Not The Same

First of all, the main reason there are wide swings in prices for stainless steel liner systems is that there are several different types of liners available. When comparing prices for liners you must be comparing similar types of liner. There are two main types of liners for use with wood stoves and inserts: Light-weight and Heavy-weight. Within these two main types there are several differences as well.

Heavy-weight Liners are Preferred

In most cases we quote your liner system using the Heavy-weight liner systems. Most of our clients over the years have agreed with us and prefer the heavy-weight liner systems. These heavy-weight systems are superior to the light-weight systems in longevity and strength. They resist damage and are extremely hard to penetrate or crush. Especially when the installation requirements are difficult, such as tight bends or narrow and uneven masonry passages, we prefer the rugged properties of the heavy-weight liners. Also, with the heavy-weight systems, you will get better protection from damage that could result from extreme treatment while cleaning the system.

Can I Opt for Light-weight Liner and Lower my Cost?

Yes, if you prefer to purchase one of the Light-weight liner systems we will provide and install the light-weight system. If after inspection we feel a heavy-weight system will be a better choice we will encourage you to go ahead and install the more expensive heavy-weight system. But, if you clearly understand the differences and wish us to use the light-weight system we will install the light-weight system, adjusting the cost of the liner to reflect the less-expensive option. In those cases where the installation requirements are difficult we may insist on heavy-weight liner.

Installation Circumstances May Dictate the Best Type of Liner

There may be some cases where a light-weight liner is preferred. This usually involves a very high and steep roof-line or very high chimney, where the weight of the liner system can jeopardize the safety of the installers. In those cases you will be apprised of your options for a quality liner system while giving a high priority to the personal safety of the installers. We have been successful in several cases where a heavy-weight liner has been installed with the aid of a hydraulic lift or scaffolding. This, of course, increases the overall cost of the liner system, but it may be preferable to installing a light-weight liner in some cases.

Stainless Steel Formulas (Alloy) and Manufacturing Techniques Affect Price of Liner

Besides the two weight differences, the formulas (alloy) and the techniques used to manufacture the liner also affect the overall cost of the liner system. Typically, the least expensive liner systems do not use the best alloys or use an outdated tooling system to manufacture the product. These “cheap” liner systems are not as strong and do not resist corrosion as well as the more expensive high-quality liner systems.

We offer several types of both heavy-weight and light-weight quality liners. The most popular alloy for wood stoves and inserts is called 304. It is a fine alloy for wood stove venting and resists corrosion from wood burning exhaust and outdoor elements. For better corrosion resistance, when venting coal or oil fired appliances, 316 alloy is preferred. 316-Ti alloy adds another level of resistance and is the best alloy for all fuels. The 316 alloys add more cost to the liner system but increase the longevity and provide for better protection.

The strength of the liner is directly related to the alloy used and the mechanical system used to create the liner. The “cheap” liners are not strong enough to resist puncturing from a simple screwdriver or even a pair of household scissors. The better quality liners are able to support the weight of a full-grown adult installer and resist accidental puncture. The modern tooling used to create these high-quality liners is superior to older methods still being used by the low-cost brands. The heavy-weight liners are simply the best at repelling abusive treatment and cannot be easily damaged. Heavy-weight liner is even hard to cut with an electric “sawzall” and cannot be accidentally punctured with a screw driver, chimney brush, rod, or chain.

Our Recommendation

We recommend that you stay with the Heavy-weight type of liner system and, unless specifically noted, your liner has been quoted using this highest-quality liner system. If you have a particular need to substitute a light-weight system we will be glad to discuss the different options available to you and adjust the installation contract as needed. For comparisons of the different types of liners, and their warranties and serviceability, please contact one of our sales representatives.

Sincerely,

The Cracker Mill Hearth & Emporium