basement install question about chimney

[Brian]

I was talking to a stove rep today and i was told that if I came out a bit further horizontally to go straight up and clear my soffit that I would have worse draft than if I USED THE 3O DEGREE OFFSETS to clear the soffit...I'm only talking about 6 inches extra and I would maintain the .25 inch per ft rule....Does this sound like he's trying to make extra money?

 

[Pallet Pete]

Could you put up a picture of where your talking about ? Are you referring to a making your chimney bend around the soffit ? What kind of stove and how tall of a chimney is it ? Depending on the type of stove you may may not want to do a basement install as they are not very efficient. This is assuming your trying to heat your hole house and not the just the basement.

Pete

 

[Pallet Pete]

Ok i think I under stand your question here you want to go around the soffit ? I cant really see how that would make for worse draft ! The air passes over the top of your chimney which creates

areas of high pressure to areas of low pressure. The negative pressure system draws hot air and smoke from a stove​

so as long as you are not making it a smaller size flue you should be fine. This said bends will slow air movement a little bit in your case however you will have a tall chimney that should overcome that issue. The taller the chimney the more draft. Acctually its low pressure high pressure issue

 

[Brian]

Ok i think I under stand your question here you want to go around the soffit ?

OK,that is the setup I'm going to have but My soffit is larger than that...I want to come out another 6-8 inches to clear mine.I don't see it being a problem but I'm no pro.

 

[Pallet Pete]

Sorry Brian I had to edit that last post because it did not post right. Is he trying to sell you a larger bracket to mount with ?

Pete

 

[DexterDay]

I would think that the offset will hurt more than an extra 6"-12".

I didnt want to offset or punch through my soffit. So I added 12" extra off my Thimble (Class-A). I also painted the T and the 12 pieces because the T was Galvanized and I hated the look.

Here are a couple shots.(taken at different points in the season/but you get the idea)

I would go out a little bit. IMO... How much vertical will you have after leaving the horizontal section leaving the basement?
(Click to enlarge)

 

[Brian]

Sorry Brian I had to edit that last post because it did not post right. Is he trying to sell you a larger bracket to mount with ?

Pete

No,he's saying the extra pipe gpoing out would screw my draft up worse than installing the 2 30 degree offsets which run over $400...I'm already gonna have 2 90's so I thought going out and up would be best!

 

[Brian]

I would think that the offset will hurt more than an extra 6"-12".

I didnt want to offset or punch through my soffit. So I added 12" extra off my Thimble (Class-A). I also painted the T and the 12 pieces because the T was Galvanized and I hated the look.

Here are a couple shots.(taken at different points in the season/but you get the idea)

I would go out a little bit. IMO... How much vertical will you have after leaving the horizontal section leaving the basement?
(Click to enlarge)

View attachment 73651 View attachment 73652 View attachment 73653

WOW,that's just what I'm planning and it looks good too.How's your draft?And how close is your tee to the dirt...My mounting bracket that supports the tee is probably gonna be touching the dirt.I may have to dig a bit and put some rocks in gthere!

 

[Pallet Pete]

I wouldn't imagine going out would hurt at all ! There are many many people around me with off set chimneys and they work just fine a few I helped install.

Pete

 

[Brian]

I would think that the offset will hurt more than an extra 6"-12".

I didnt want to offset or punch through my soffit. So I added 12" extra off my Thimble (Class-A). I also painted the T and the 12 pieces because the T was Galvanized and I hated the look.

Here are a couple shots.(taken at different points in the season/but you get the idea)

I would go out a little bit. IMO... How much vertical will you have after leaving the horizontal section leaving the basement?
(Click to enlarge)

View attachment 73651 View attachment 73652 View attachment 73653

Oh and are those regular adjustable brackets or did you have to customize them?...Thanks

 

[Brian]

I wouldn't imagine going out would hurt at all ! There are many many people around me with off set chimneys and they work just fine a few I helped install.

Pete

That's what I thought...I really am amazed he would try and tell me it would be worse than extra elbows...I got a feeling from this guy that he's more salesman than a hands on type of guy!Thanks for the reply!This is a great site!

 

[Pallet Pete]

Your welcome Brian and yes this is a good forum ! Unfortunately most of the stove installers around us send out estimators who have zero experience to do the install estimate and give install advice to the home owner who usually does not have much knowledge.

Pete

 

[DexterDay]

WOW,that's just what I'm planning and it looks good too.How's your draft?And how close is your tee to the dirt...My mounting bracket that supports the tee is probably gonna be touching the dirt.I may have to dig a bit and put some rocks in gthere!

Draft is Great. I have 18' of Class A shooting to the sky.

I had to dig about 6" out and I laid some pavers under it. So I have about 12" to lay down and remove the clean-out cap.

Works well and looks good. I had to have my 12" brackets custom made at work. But use your imagination and I am sure you can make it work..

Many here have done this. Though many have off-set, and many have cut through the soffit. I just see 2 bends slowing the draft more. I have 4 ft vertical in the basement, then 4 ft horizontal (all double wall), then 18' of Class A.

Just make sure your Horizontal has at least 1/4" to 1/2" rise per foot.

 

[BrotherBart]

If you are going up three stories from the basement, probably thirty+ feet, draft ain't gonna be a problem when that pipe is warmed up. 90s, 30's or 180s. Insulated pipe after it starts drafting is gonna suck the carpet off the floor. With exterior pipe you will have a problem getting a draft started from dead cold on a cold day. After it starts, rock and roll.

 

[Pallet Pete]

If you are going up three stories from the basement, probably thirty+ feet, draft ain't gonna be a problem when that pipe is warmed up. 90s, 30's or 180s. Insulated pipe after it starts drafting is gonna suck the carpet off the floor. With exterior pipe you will have a problem getting a draft started from dead cold on a cold day. After it starts, rock and roll.

HaHaHa BB said suck the carpet off the floor I dont know whay thats sooo Funny but it is Ok enough derailing

Pete

 

[Brian]

You know whats funny is if I didn't buy the heat shield for my stove I would have needed an extra 12 inches in the basement horizontally so there is zero difference as far as that is concerned...I'm going to lowers for the pipes anyway but that guy gave me bad advice IMO...Can't wait to get the stove delivered and get to work!

 

[Todd]

It will be harder to sweep with the 30 elbows than a straight shot. I'd rather extend the horizontal run especially if it's a taller chimney.

 

[Brian]

Draft is Great. I have 18' of Class A shooting to the sky.

I had to dig about 6" out and I laid some pavers under it. So I have about 12" to lay down and remove the clean-out cap.

Works well and looks good. I had to have my 12" brackets custom made at work. But use your imagination and I am sure you can make it work..

Many here have done this. Though many have off-set, and many have cut through the soffit. I just see 2 bends slowing the draft more. I have 4 ft vertical in the basement, then 4 ft horizontal (all double wall), then 18' of Class A.

Just make sure your Horizontal has at least 1/4" to 1/2" rise per foot.

Dexter, I made some sweet stainless brackets at work,(machine shop).I bent a 1x2 angle about the same as your length and matched the slots in the mounting plates so I have a 3 inch adjustment in or out and I nabbed some stainless hardware too..LOL,so I'm just cantilevering it off of the factory brackets...These things would support me no prob and I'm 230 lbs...I would expect the galvanized wall mounts to kiink before these,not that that's gonna happen,just saying these things are beefy

 

[DexterDay]

Dexter, I made some sweet stainless brackets at work,(machine shop).I bent a 1x2 angle about the same as your length and matched the slots in the mounting plates so I have a 3 inch adjustment in or out and I nabbed some stainless hardware too..LOL,so I'm just cantilevering it off of the factory brackets...These things would support me no prob and I'm 230 lbs...I would expect the galvanized wall mounts to kiink before these,not that that's gonna happen,just saying these things are beefy

Congrats. Any pics? Maybe someone will see this thread and they will help them visualize?

Sounds like you have a plan and its working out just fine. Cant wait to see some finished pics

 

[Brian]

Congrats. Any pics? Maybe someone will see this thread and they will help them visualize?

Sounds like you have a plan and its working out just fine. Cant wait to see some finished pics

I just snapped a few of the progress so far but I just cracked a beer and feeling lazy...Gettin the stove down 8 steps was not fun,had to tie it to the truck and slowly back it up and slide it down planks...I'll post some soon though!