Rigid Chimney Liners

Rigid chimney liners are available in two grades of stainless steel including 304L or 316L. Use 304L for wood burning applications, while 316L is multi-fuel. Use 316L for gas, oil, wood, corn, coal, and pellet. Applications include relining a masonry chimney for fireplaces, stoves, boilers, furnaces, and more.

Both grades of stainless steel rigid chimney liner are 24 gauge. With an expanded female end, and tapered male end, this allows for better flow and easy pipe to pipe connection. Laser welded seams lock gases and moisture inside and the liners stay perfectly round. The interior of the rigid liner is smooth, giving you a 20% better draft for gas burning appliances and a 15% better draft for oil appliances. Rock-Rigid chimney liners are UL1777.

Learn about Rigid Chimney Liners

Shop Rigid Chimney Liners

304L Rigid Chimney Liners

316L Rigid Chimney Liners

Learn About Rigid Chimney Liners

Typical Use & Summary:

Connects directly to an appliance such as a stove or furnace
Runs to the wall or ceiling and connects to a masonry chimney or Flexible Chimney Liner Kit
Can connect to a Class A Insulated Pipe when transitioning to pass through combustibles
Can reline a straight masonry chimney without offsets or dampers
Single Wall Rigid Chimney Liner needs an 18" clearance from combustible materials
304L Stainless Steel is used for wood fuel applications; 316L Stainless Steel is multi-fuel for gas, oil, wood, corn, coal, and pellet applications

You Might be Looking For:

Class A Insulated Pipe - Used when you don't have a masonry chimney or need a closer clearance to combustibles
Flexible Chimney Liner Kit - Used to reline a masonry chimney
Black Stove Pipe - Used to connect an appliance to masonry chimney, Flex Liner Kit, or Class A chimney pipe. Doesn’t have the longevity that Stainless Steel Rigid Liner has.

304L Rigid Chimney Liners

304L Applications: Wood and Wood Pellet burning appliances. Rock-Rigid flue liners are the highest quality 304L stainless steel. Each stainless steel flue liner & component feature laser welded seams for a perfectly round pipe connection. We offer a variety of Rock-Rigid liner lengths and components for a variety of different installations. Made in America, Lifetime Warranty, and UL1777 listed, there isn't a better product line to reline your masonry chimney for your wood burning appliance.

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316L Rigid Chimney Liners

316L Applications: Wood, pellet, gas, oil, and coal burning appliances. 316L Rigid Chimney Liners have greater corrosion resistance than 304L Rigid Liner. The Rock-Rigid 316L rigid chimney liners are the highest quality stainless steel. Each liner and component features laser welded seams for a perfectly round pipe and easy connection. We offer a variety of Rock-Rigid liner lengths and components for a variety of different installations. UL1777 listed, Made in America, and Lifetime Warranty, you will not find a better multi-fuel product to reline your masonry chimney.

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What Parts Do I Need?

The diagram at left shows the parts typically needed at the top of the chimney. The rigid liner(1) is inserted into the chimney. The chimney top is covered by the top plate(2) which goes on over the liner. Support clamp(3) holds the liner in place and keeps it from slipping down the chimney. The storm collar(4) covers the gap between the liner and top plate to keep out moisture. The rain cap (5) gives an attractive finished look while keeping rain, birds and critters from getting into your chimney, and sparks from getting out.

Connecting to Your Appliance

Fireplace Connection:

If you are connecting to an existing fireplace without an insert, you will need an additional top plate to use where the bottom of the liner reaches the fireplace opening. You may also need to fill the space around the liner with insulation mix.

Insert:

If your fireplace has an insert with a top opening, you may need an elbow connector.

Stove/furnace (or other appliance needing a horizontal connection):

You will need a rigid tee connector with removable snout and clean-out cap.

You may also need:

Rigid adjustable elbows to change the angle of the liner, and pop rivets for assembly.

DIY Center

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From video tutorials to product walkthroughs, we have a variety of DIY resources just for you! Click the button below to view our entire library.

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Our 316Ti flexible chimney liner and chimney liner components have passed the rigorous testing at the Underwriters Laboratories with best in class status and are UL Listed. So if you are looking for UL listed chimney liner sold directly to homeowners, then look no further than Rockford Chimney

Customer Testimonials

Back in July you gave me excellent advice re. sizing/purchasing a flue liner for the chimney associated with my wood stove. I'd like to thank you once agai... More

—AE Northfield, MN

A few weeks ago I ordered a chimney liner system for my fireplace insert. Your salesman recommended the liner system plus the insulating blanket. I just wa... More

—AH Happy customer

Just got around to installing my new smooth flexible liner and deluxe terra cotta cap (wow). The quality of your product is second to none. Very pleased an... More

—B.B. from Massachusetts

Thanks so much for the great tech service from Dennis, very knowledgable, friendly and proffessional.Your website is the best, beats your competition by fa... More

—Bill in Knoxville

Sue and Dennis, I received the final part of my order yesterday (the chimney cap that actually fits over the chimney chase). It looks wonderfu... More

—CC, VA

Hello, I was shopping for an fireplace insert and called RCS to ask why they were so much cheaper than my local guy, the reply was " we sell thousand of th... More

—Chris, PA.

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Flexible Chimney Liners