Replacing masonry chimney with stainless in spring need advice

found another
This company seems really good
Rock-Flex Pre-Insulated Stainless Steel Chimney Liner Kits are manufactured with the homeowner in mind. Provides zero clearance to combustibles inside masonry chimneys. By using 316L stainless steel inner lining and aluminum outer lining, our pre-insulated chimney liners are not only economical but are easy to install and provide added protection for your flue and installation. The 316L stainless steel inner lining will protect against corrosion while the aluminum outer lining will keep the insulation intact during installation and offers better flexibility. The 1/2" insulation will ensure that flue gases stay hot and less creosote will build inside the flue. Use the Rock-Flex Pre-Insulated chimney liner for the ease and quickness, instead of having to install your insulation. Please add 1.25” to the liner size for the outside diameter (Ex: The 6” liner has a 7.25” Outer Diameter)
Note: When connecting the end of the liner with your bottom connector in Step 2, you will need to use a pair of tin snips or hack saw to remove the outer aluminum and insulation just enough for the inner stainless liner to fit inside the connector.

 

Got the same and happy too

 

Looked at your pic and then the price before I saw what was actually being sold. Did a double take! $142 for a liner

 

They are...

 

Haftacut Did you install the insulated liner inside 8x8 clay tile?

 

brenndatomu I built the chimney and used the solid cement square chimney blocks with clay liner inside then added brick a few years later on the three outer sides. I'd like the new liner to keep chimney warmer (less creosote) and new higher clean out door to allow me to clean from ground level.
Gotta go up and measure inside of clay tile to see if new pre-insulated liner would fit. I like this idea.
Would there be any advantage to getting stainless outer layer over aluminum? I'm thinking it would be tougher when installing and going down resisting abrasion better. I also like the idea of clay liner remaining. Another layer of safety..
Still haven't found anyone who installed this in an 8x8 clay tile though.
Thanks for your help

 

Does it (chimney) have the required 1" gap to the house? Many don't. The CTC is the main issue with insulation required, or not.

Yeah, SS is a tougher...and would have much better corrosion resistance over the years...although once the liner is in, that outer layer doesn't mean much really...

 

gap is 1/2 to 3/4 on the upper part
From ground up to 6 ft solid masonry to inside brick with cement board under brick with wall cut out

 

I had to break out the liner, but yes it was an 8x8. Would have liked not to have had to, but too snug. The liner is of course insulated and then they wrap it in what appears to be a wire mesh like chicken wire. If the Fit is too snug, you’ll Tear up the insulation on the way down. Mesh protects it a little, but you can still damage the insulation.

 

That's where the pre-insulated shines...especially if its a snug fit, that outer metal layer is bulletproof compared the insulation blanket with the mesh over it. Plus being a touch smaller too...

 

brenndatomu Did you install the insulated liner inside 8x8 clay tile?

 

No, mine was larger

 

Still haven't found anyone who installed this in an 8x8 clay tile.
Thanks for your help

 

There are so many different flue sizes out there. It will all depend on your flue if it will go or not...if the tiles are still lined up well, with no broken pieces hanging out, and not much excessive mortar spooged out between the joints, it will go.
One easy way to test it... drop a small bucket, or piece of pipe about the same OD, see if it goes...if it hangs up, said piece of pipe or heavy object can be used to snap the offending mortar off too...

 

brenndatomu thanks that's a good idea will do it next cleanout.

 

Ok thinking about this, I'll get an 8" piece of stovepipe 3' long. Make wood circles 7 1/2" inch diameter form the 8" stovepipe around these on both ends, shrinking the 8" diameter down to 7 1/2. Attach a pole (could use threaded rod) to it and try lowering it down to test if the new liner will fit.
Remember this is to be done in spring so plans may still be refined more!

 

Geographic locations, years made, kiln temps etc etc will all make a difference. But last I knew an 8x8 flue hovered around 7.25” inside. In the 70’s they may have been closer to 7.5. There were some oldies almost white in color that were larger yet.
I had a heck of a time getting a 6” flex liner down my mothers 7.25” chimney without insulation and I built the thing so I know they were lined up and no snots.

 

jo191145 thanks for the info
Really don't know what I will find. Will be interesting.
As of now I would like to leave clay liner.
If I can not fit insulated liner I will go with solid 4 ft SS sections. Think they would hold up better
Eric VW rope won't allow me to push a little if I have to.