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-   -   No chimney liner since 1964 for our wood fireplace (

Wuzzat? 03-26-2014 08:00 AM

No chimney liner since 1964 for our wood fireplace
Now we have a gas log set. Do we need a liner more or less than before?

Searching this, I got a lot of false hits. If nobody knows I'll be doing more searching. :(

CallMeVilla 03-26-2014 08:48 AM

Your best bet is to contact the City/County for local codes. OR, you can contact local chimney repair people.

JoeD 03-26-2014 09:37 AM

What does you gas fireplace install information say about it?

bud16415 03-26-2014 09:49 AM

What did / do you have as a liner and did you use it from 1964 till now? How large is the opening coming down? Is it full of creosote?

Wuzzat? 03-26-2014 10:10 AM

Thanks, folks. . .I've got some homework to do.

Does everyone agree that there is no harm in putting in a liner, assuming I don't end up in the ER and on the evening news?

Here's my Nextag stats for kits, in dollars
509 =average
489 =median
half cost between

nealtw 03-26-2014 05:54 PM

Clean the chimney and install the liner:2cents:

Wuzzat? 06-23-2014 09:59 AM

Finally put a bulb in the bottom of the chimney and looked down from the roof.

Found that the device to keep the damper open that was installed by the gas fireplace people doesn't work.

Soot & probably creosote, yes, visible.

Anyway, here's a quote from a 2009 patent application for a device to re-mortar the joints from within, in a chimney lined with clay tiles (like mine).

"It has been estimated that nearly half of all masonry chimneys that are lined with sections of clay flue tile have at least one joint (the juncture between the each section) that has deteriorated and needs to be replaced. This can create a potentially hazardous condition for the occupants. The purpose of a chimney is to contain and convey the products of combustion to the outside. If the chimneys liner contains gaps and voids, it can no longer be relied on to function for its intended purpose.
All nationally recognized building codes (National Fire Protection Association 211 Standard for Chimneys & International Residential Building Code-R1001.9 Flue lining installation) call for flue liners to be joined together and sealed with a non-water-soluble refractory cement that meets ASTM C199 medium duty classification. Unfortunately, it has been found that during the original construction, builders often use standard mortar to lay or seal flue tile sections. Because standard mortar is water soluble and not meant for high heat applications, joints constructed with standard mortar may deteriorate more rapidly than sections joined together and sealed with refractory mortar.
Because most residential chimney flues are long narrow tubes, it is nearly impossible to repair chimneys that are found to have this condition. Until now the only reliable method has been to tear down the chimney and rebuild it or to line the existing chimney flue with stainless steel pipe."

Only 1/4th of the tile perimeter abuts the house and the gases still have to go through brick seams. I think the fire danger from open tile seams is minimal because of our layout, and we have CO detectors. We've never had a CO alarm nor had symptoms.

Anybody here see a problem with wait & see? Some scenario I haven't thought of?

havasu 06-23-2014 10:15 AM

Sorry, I would not light a fire until this was corrected.

I've seen some really quick and successful flu lining by using the stainless steel flexible tubing. Have you considered this?

oldognewtrick 06-23-2014 02:16 PM

And another thing to consider, you build a fire, burn the house down, the insurance doesn't pay because you had a known hazard and built a fire anyway... Something to think about.

Wuzzat? 06-23-2014 04:26 PM

From some additional research I know now there is no evidence that we ever had a fire. But it also seems like our clay tiles are at the end of their 50 year life.

BTW, one of the reports said a fire claim could not be denied for lack of maintenance of the chimney but insurance companies in the US can do whatever they want.

There's a chimney shop some distance from me so I'll stop by and see what they have.

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