Extending Chimney down chase another 7 feet

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ddown

Member
Jul 2, 2008
184
Middle of the Mitten, Michigan
OK here's my problem
I need to move my "T" down 7 feet and ad 2 sections of Security pipe. Right now I have 10 feet of single wall into a 90 and thru to the "T" is there anyway to do this without taking apart the 24feet of class a above it in the chase?
I have to redo some drywall behind the stove so bottom access will be easy. The installers even built a ladder across studs all the way to the top. Is this easily doable?
I'm only adding 2 sections of pipe. Just had it swept last week and all looked good getting new chase cover but on next week by the sweep old one rusting. It's 40' feet to the top so i'm trying to have less single wall pipe and eaiser access for cleaning out the "T" plus keep more heat in the insulated pipe. Advice welcome. The pictures were during install stove is different but pipes are the same. Pictures down chase were taken with chase cover off.

Hopefully these pics give a good enough visual
 

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ddown said:
OK here's my problem
I need to move my "T" down 7 feet and ad 2 sections of Security pipe. Right now I have 10 feet of single wall into a 90 and thru to the "T" is there anyway to do this without taking apart the 24feet of class a above it in the chase?
I have to redo some drywall behind the stove so bottom access will be easy. The installers even built a ladder across studs all the way to the top. Is this easily doable?
I'm only adding 2 sections of pipe. Just had it swept last week and all looked good getting new chase cover but on next week by the sweep old one rusting. It's 40' feet to the top so i'm trying to have less single wall pipe and eaiser access for cleaning out the "T" plus keep more heat in the insulated pipe. Advice welcome.
Click to expand...
I don't know why not if you can figure out some way to support the upper sections while you do it. Some pictures and details would help. 10 ft of single wall? Is this a 2 story and how tall are the ceilings?
 
Well, you could just replace the single wall with double wall. That wouldn't get your clean out any more accessible though. How do you get to the T and clean out now?
 
12 Foot step ladder I have to bring out for the sweep. If it was lower could just clean from the floor much easier.

It's a pain to get a VAC up on top of the 12 foot ladder
 
OK, that is not a very good situation and I can see why you would want to change it. Not being there it is difficult to really figure out exactly how you are going to support it, but surely you can make something temp. to do that. I can see one bracket in the chase now. additional similar brackets would help , and then as you take out the T, simply place a temp. bracket under the class A. Or, if not, it doesn't look like it would be that difficult to just take it down and start over.
 
Great photos.
 
Got it done and did I find some surprises. A lot tougher job than I thought. I had to take out all the pipe except the very top one that is screwed to the chase cover. I measured and It came out exactly (perfect fit ) The problems I found were T supports Barely screwed on bolts, the insulated bottom of the T was not secured with screws only aluminum tape. It even says that the 4 screws are required. It actually fell out the bottom of the T Only 1 brace for 20 feet of chimney now has three for 27 I'm glad the stove shop is out of business but for what I paid it should have been right. From now on I'm a do-it-yourselfer I do good work and will sleep better at night knowing I have a properly installed Chimney.
 
ddown said:
Got it done and did I find some surprises. A lot tougher job than I thought. I had to take out all the pipe except the very top one that is screwed to the chase cover. I measured and It came out exactly (perfect fit ) The problems I found were T supports Barely screwed on bolts, the insulated bottom of the T was not secured with screws only aluminum tape. It even says that the 4 screws are required. It actually fell out the bottom of the T Only 1 brace for 20 feet of chimney now has three for 27 I'm glad the stove shop is out of business but for what I paid it should have been right. From now on I'm a do-it-yourselfer I do good work and will sleep better at night knowing I have a properly installed Chimney.
Click to expand...
ddown, Good job. That is why I have always done everything myself. It is really hard to find anyone that will do the job right anymore. Sounds like it was a good thing that this needed done and therefore you found all the problems.
 
ddown said:
...for what I paid it should have been right. From now on I'm a do-it-yourselfer I do good work and will sleep better at night knowing I have a properly installed Chimney.
Click to expand...
+1 I am the same way.
 
I just did a similar job on my Security chimney; removing pipe from the bottom and rebuilding the base support. I likewise discovered a crappy install; no supports in 35' , no cap screws to lock in the pipe (separated when I tried to clean the chimney) and chase framing resting against the pipe. We're lucky to have discovered these problems the easy way. Anyone who has a prefab chimney should do a thorough inspection to make sure it wasn't slapped in there half-assed.

Ehouse
 
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