Wrong Metal For Furance Exhaust ? - HVAC - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 07-29-2013, 06:33 PM   #1
Newbie
 
Join Date: Jul 2013
Posts: 4
Rewards Points: 10
Default

Wrong metal for furance exhaust ?


So Im up on the roof and i notice the out side of the Exhaust pipe Is rusted away and the cap is missing off the exhaust pipe. from the attic there is blown in insulted and its all dis colored from the metal rotten away, it left the white blown in insulted yellow like the pipe on the roof
What should be done to fix this issue?

is everything all good except the cap missing?

it seems to be a low gauge steel for the flashing kit/ pipe slide over the inner pipe which seems to have no damage.
or did it rot out so bad because there was 2 different types of metals used?





Next doors

Advertisement

Dnbtrack is offline   Reply With Quote
Old 07-29-2013, 07:21 PM   #2
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 10,122
Rewards Points: 882
Default

Wrong metal for furance exhaust ?


they use galvanized metal for those and it gets corroded and eaten away by moisture and acid rain does not help either. needs to be replaced with a new one, unfortunately none of them are made of stainless steel as the cost would be prohibitive.

Advertisement

__________________
"Cut it twice and it is still too short".
yuri is offline   Reply With Quote
Old 07-29-2013, 07:26 PM   #3
Member
 
Join Date: Oct 2011
Location: pa
Posts: 4,646
Rewards Points: 2,606
Default

Wrong metal for furance exhaust ?


wow that has to be really leaking on a rain????ben sr replace is an understatment...
ben's plumbing is offline   Reply With Quote
Old 07-29-2013, 07:41 PM   #4
Newbie
 
Join Date: Jul 2013
Posts: 4
Rewards Points: 10
Default

Wrong metal for furance exhaust ?


So it needs a flashing kit and a sock type pipe to going iver the original one? I seen several of these very very old and not even phased by weather? Do you think it was the product they used as on the same street there is several rotted out so the builder probably used the same one threw out the street, the hvac guys I mean?

Its a very very thin gauge

What would the cost be of these parts and which would I need to buy?
Dnbtrack is offline   Reply With Quote
Old 07-29-2013, 10:15 PM   #5
Experienced HVAC Tech
 
HVAC1000's Avatar
 
Join Date: Dec 2012
Location: Northern Colorado
Posts: 357
Rewards Points: 250
Default

Wrong metal for furance exhaust ?


It's call double wall or type B vent. You should replace whatever is rusted through. What's your location, and what is common weathers there?
HVAC1000 is offline   Reply With Quote
Old 07-29-2013, 11:58 PM   #6
Member
 
Join Date: Oct 2012
Posts: 282
Rewards Points: 266
Default

Wrong metal for furance exhaust ?


The damage looks to be from the flue gases condensing at the cap and dripping down onto the outer galvanized pipe and destroying it. Either that or you live real close to the ocean.

No matter the reason they need to be replaced back to where the pipe is not damaged.
old_squid is offline   Reply With Quote
Old 07-30-2013, 06:19 AM   #7
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,548
Rewards Points: 4,734
Default

Wrong metal for furance exhaust ?


You'll need to look at what brand it is. And then you have to use that brand. Unless you run all new from the furnace up.

The attic height may be such, that the B vent is cooling too much in the attic. May need to wrap it with a non combustible insulation in the attic.
__________________
When posting in certain forums, knowing your location will help others give better feedback/advice/solutions to your questions.
beenthere is offline   Reply With Quote
Old 07-30-2013, 07:18 AM   #8
Member
 
PoleCat's Avatar
 
Join Date: Sep 2009
Location: Dayton, Ohio
Posts: 1,554
Rewards Points: 790
Default

Wrong metal for furance exhaust ?


There are stainless steel pipes available but as mentioned they are not an easy buy. I just passed on them myself in favor of the galvanized.

Advertisement

__________________
"Ask me anything. If I don't know the answer I'll make something up."
PoleCat is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Grounding Metal Boxes and Outlets - Confused by Something Simple ALFisher Electrical 36 08-20-2014 10:12 AM
Clearcoating a Stripped Vintage Ferrous Metal Medicine Cabinet? Lovegasoline Painting 15 08-31-2013 10:32 PM
old pull chain metal wall mount exhaust fans mssjam Remodeling 3 10-13-2012 05:33 PM
Getting shocked by multiple metal items in room thms Electrical 14 06-24-2010 02:23 PM
Wire size for 300watt trans, 3 way 100ft Al the Diy guy Electrical 16 03-22-2008 09:46 PM




Top of Page | View New Posts