Need Chimney Experts opinion

Need Chimney Experts opinion

PostBy: jrn8265 On: Tue Mar 05, 2013 7:52 am

Hello,

My stone chimney was pointed last year and the crown cemented also.

The guy did an awesome job for us.

We used to have no stains on the top.

Since then the top of our chimney has rust stains down the sides.

Can anybody tell me what you think these could be caused by?

I know the liner is good or at least was 8 months ago.

Thanks!
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jrn8265
 
Stove/Furnace Make: Keystoker Koker
Stove/Furnace Model: Koker 160

Re: Need Chimney Experts opinion

PostBy: Wiz On: Tue Mar 05, 2013 8:08 am

Rain caps
Wiz
 
Stoker Coal Boiler: Keystoker Ka 6
Coal Size/Type: Casey Junk Coal :(

Re: Need Chimney Experts opinion

PostBy: CapeCoaler On: Tue Mar 05, 2013 8:20 am

Ditto...
You have some steel in those caps...
It rusts...
now staining the stonework...
CapeCoaler
 
Stoker Coal Boiler: want AA130
Hand Fed Coal Stove: DS Machine BS#4, Harman MKII, Hitzer 503,...
Coal Size/Type: Pea/Nut/Stove


Re: Need Chimney Experts opinion

PostBy: Lightning On: Tue Mar 05, 2013 8:30 am

I think that fly ash is accumulating on the rain caps and mixing with moisture. This combination creates sulfuric acid that is acting as a catalyst to produce rust. Then the rust is being washed onto the chimney when it rains. I dunno. I'm just guessing.
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix

Re: Need Chimney Experts opinion

PostBy: freetown fred On: Tue Mar 05, 2013 8:50 am

Also, do you burn any wood in either of those flues??? creosote on those caps will do that--at least MY creosote does--PLUS--that wire (keep the critters out crap) rusts like a bastard
freetown fred
 
Hand Fed Coal Stove: HITZER 50-93
Coal Size/Type: BLASCHAK Nut/Stove mix

Re: Need Chimney Experts opinion

PostBy: Rob R. On: Tue Mar 05, 2013 8:56 am

freetown fred wrote:Also, do you burn any wood in either of those flues??? creosote on those caps will do that--at least MY creosote does--PLUS--that wire (keep the critters out crap) rusts like a bastard


Bingo. I had the same issue, and it didn't take much wood to do it.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

Re: Need Chimney Experts opinion

PostBy: titleist1 On: Tue Mar 05, 2013 8:59 am

Just wondering what kind of liner it is you mentioned was good about 8 months ago? Terra cotta or a SS insert?
titleist1
 
Hot Air Coal Stoker Stove: Harman Mag Stoker (old style) one in basement, one in workshop
Hand Fed Coal Stove: Harman Mark III on standby for long power outages
Coal Size/Type: Rice/Anthracite; Nut/Anthracite

Re: Need Chimney Experts opinion

PostBy: buffalo bob On: Tue Mar 05, 2013 9:09 am

freetown fred wrote:Also, do you burn any wood in either of those flues??? creosote on those caps will do that--at least MY creosote does--PLUS--that wire (keep the critters out crap) rusts like a bastard

i agree with f fred i have the same problem here rust stains...remedy...take those caps off
buffalo bob
 
Hand Fed Coal Stove: hitzer 354
Coal Size/Type: anthracite nut

Re: Need Chimney Experts opinion

PostBy: waldo lemieux On: Tue Mar 05, 2013 9:15 am

Get rid of the metal caps and put a stone witch catcher up there, somethin fitting of that nice chimney. Too maybe somethig copper?
waldo lemieux
 
Stove/Furnace Make: efm
Stove/Furnace Model: s-20

Re: Need Chimney Experts opinion

PostBy: freetown fred On: Tue Mar 05, 2013 9:18 am

Now----if you want to talk copper--get hold of FORUM member "oliver power" ;)
freetown fred
 
Hand Fed Coal Stove: HITZER 50-93
Coal Size/Type: BLASCHAK Nut/Stove mix

Re: Need Chimney Experts opinion

PostBy: jrn8265 On: Tue Mar 05, 2013 11:22 am

Thanks everyone.

I have 5" stainless steel liner.....as of 8 months ago chimney sweep siad it looked very good.

I guess I'll replace the caps after I shut down the coal stove.

Could it be anything else causing the stains?

thanks!
jrn8265
 
Stove/Furnace Make: Keystoker Koker
Stove/Furnace Model: Koker 160

Re: Need Chimney Experts opinion

PostBy: Den034071 On: Tue Mar 05, 2013 11:32 am

Im a mason 41 years .Cap is probably not stainless thats causing rust .Den034071 jack
Den034071
 
Hand Fed Coal Stove: Hitzer, 3095

Re: Need Chimney Experts opinion

PostBy: McGiever On: Tue Mar 05, 2013 12:12 pm

Red Ash Coal is laden w/ iron...some coals much more iron than others. Whatever goes in...must come out somewhere.

So sorry to hear you have a SS liner. :(
Is it possible to have it removed?
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: Need Chimney Experts opinion

PostBy: dcrane On: Tue Mar 05, 2013 12:54 pm

arggg, another consumer sold on a $2k stainless liner :cry: anyways... that Chimney is fantastic and deserves a stone cap or pure copper cap. Were those same caps present before the work you had done? if not then its most likely the caps, if those were the same caps then the person working up their used a flange or something of poor material (steel, iron, galv, etc.) in doing whatever he did (Im sure he built up cement to shed rain water and sometimes they use drip flanges, etc. in doing this. When you do replace the cap try to put some distance between the bottom of the cap and the top of the flu (10" +).

just to show you the simplicity of a stone cap here is a photo... There are a lot of folks here who give their right arm for a chimney like you have (me included!) and this is the proper way to cap it ;)
stone cap.jpg
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dcrane
 
Hand Fed Coal Stove: Crane 404

Re: Need Chimney Experts opinion

PostBy: SMITTY On: Tue Mar 05, 2013 2:20 pm

I can guarantee it will be cheaper to build that stone cap ...

Now, does anyone know if it's better to have the 2 open ends facing INTO the prevailing wind direction, or perpendicular to it? Or am I not seeing the other 2 ends being open? :gee:
SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler