Chimney expertise, anyone?

Posted by Mark G. on September 10, 2008, 12:22 am

Good evening.

This afternoon I climbed up on the roof to check the downspouts,
and I found the chimney cap to be in rather sad condition:

http://rainchain.drizzlehosting.com/chimney

Can any of our resident chimney experts suggest what needs to be
done here? Obviously a new chimney cap is in order. Perhaps I can
simply replace the existing cap with a stainless steel cap that fastens
around the exposed flue liner? Or should I be worrying about the
condition of the flue liner? If so, what needs to be done?

The chimney is used only by an oil-fired gas furnace.

Thanks!
-Mark

Posted by hawgeye on September 10, 2008, 7:48 am

> This afternoon I climbed up on the roof to check the downspouts,
> and I found the chimney cap to be in rather sad condition:
> http://rainchain.drizzlehosting.com/chimney
> Can any of our resident chimney experts suggest what needs to be
> done here? Obviously a new chimney cap is in order. Perhaps I can
> simply replace the existing cap with a stainless steel cap that fastens
> around the exposed flue liner? Or should I be worrying about the
> condition of the flue liner? If so, what needs to be done?
> The chimney is used only by an oil-fired gas furnace.

I'm no expert, but looking at those pics, I wouldn't fire up that furnace
yet.
Not only does that look un-safe, I doubt that it meets current codes.
The liner appears to have some cracks and obviously the cap is shot. I'm
surprised animals haven't made a home in there over the summer.

I would install the proper (per code) liner pipe inside the existing with a
new cap.
It appears that you may have the room to do this, but I don't know what size
flue is required for your furnace. You may need an HVAC pro to install it
and flash around the top as well.

Posted by jloomis on September 10, 2008, 10:01 am

Yeow!
Looks like you have had some chimney fires.....
The ceramic lining in the actual chimney is shot.
You can see the erosion on the sides.
Get a Heating Sheet Metal Shop/Man to come and inspect......
A cap would be the last thing I would worry about....
They may be able to put a "liner" in the flue?
jloomis

> Good evening.
> This afternoon I climbed up on the roof to check the downspouts,
> and I found the chimney cap to be in rather sad condition:
> http://rainchain.drizzlehosting.com/chimney
> Can any of our resident chimney experts suggest what needs to be
> done here? Obviously a new chimney cap is in order. Perhaps I can
> simply replace the existing cap with a stainless steel cap that fastens
> around the exposed flue liner? Or should I be worrying about the
> condition of the flue liner? If so, what needs to be done?
> The chimney is used only by an oil-fired gas furnace.
> Thanks!
> -Mark
>

Posted by Steve Barker DLT on September 10, 2008, 10:20 am

if it's only used by an oil fired furnace, i'd just re-cap it like you said
with a nice metal clamp on unit. But I'd never put any serious (wood) heat
up THAT liner.

s

Posted by Mark G. on September 10, 2008, 11:15 am

> The chimney is used only by an oil-fired gas furnace.

Hmm...or was that a "gas-fired oil furnace?" Let me check...
Ok, it's an "oil-fired furnace."

:-o

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