Stainless Steel Flex Chimney Lining Systems

Note - Independent lab tests show that the Rock Flex Crush Tested best in class. See chart below. Rock Flex beats all, hands down!

All tested liners are well known, branded products. In fact you have most likely seen them for sale online at one time or another. You may have even thought about purchasing one because of their cheap prices. Don't be fooled, here are the facts

Wall Thickness Crush Point Weight / Foot
.006" Rock flex 338 lbs. 1.21 lbs. / 6" ID
.006" Brand A- Flex 160 lbs.
.006" Brand C 142 lbs.

A chimney liner vents harmful gases from your home, don't trust a lesser quality for your home & family.

Rock Flex Stainless Steel 316Ti Lining Systems
Rock Flex stainless steel flex chimney liners are the most popular flex liners offered at Rockford. The liners and all components are manufactured using the the very best Prime Stainless Steel do not accept anything less. The liners offer an engineered tough 7-ply seam, which is air and water tight. There are 10 corrugations between each reinforced 7 ply seam. It leads the industry in flexibility and strength combined. It is the very best your money can buy, guaranteed in our no hassle forever warranty.

Rock Heavy Flex Stainless Steel AL 29-4C Lining Systems
Why would you choose Rock Heavy Flex? Rock Heavy Flex stainless steel flex chimney liner provides better corrosion resistance against the condensed flue acids that are formed by higher efficiency oil & gas units. For example if you have an appliance that displays an 83% efficiency or higher, then you want to choose AL 29-4C.

Rock Tough Flex Systems
There are some instances when you need heavy duty tough Flex Liner. Rockford has been listening to your needs and now offers Rock Tough Flex stainless steel flex chimney liners to meet those needs. Rock Tough Flex is so tough you can drive a truck over it. Rock Tough Flex is offered in 304L and 316L Stainless Steel with a smooth interior wall.

Rock Rigid System
Rock Rigid has a smooth interior wall and is offered in 304L & 316Ti. Rock Rigid features a smooth interior wall & is tampered & butt-welded for a smooth fit from one section to the next. Why Rock Rigid? State of the art smooth weld superior to any other on the market. Expanded ends means better flow. Superior venting. We carry all diameters 3" to 16" and lengths from 6" up to 4'.

Additional Chimney Products

Chase Covers
Chase Covers available in stainless steel & copper

Chimney Preservation
Crown Seal, Water Repellent and other chimney preservation supplies

Chimney Caps
Single Flue & Multiple flue Caps
stack able & classic, Why copper caps Multi flue caps available in stainless steel & copper

Dampers
Four styles of modern dampers