Chimney chase size

RSNovi

Feeling the Heat
May 12, 2010
401
Michigan
Hi All,

We are building a new home and they are about to frame the chimney chase. We are doing a wood burning stove that will vent straight up and out the roof with 6" class A. That would be the only pipe in the chase. What size chase would you recommend? The contractor recommended a rectangle for aesthetics. Thanks.

Chris
 

bholler

Chimney sweep
Staff member
Jan 14, 2014
21,568
central pa
Hi All,

We are building a new home and they are about to frame the chimney chase. We are doing a wood burning stove that will vent straight up and out the roof with 6" class A. That would be the only pipe in the chase. What size chase would you recommend? The contractor recommended a rectangle for aesthetics. Thanks.

Chris
For most double wall insulated chimney pipe you need atleast 12x12 open inside. But you need to check the requirements for the pipe you will be using. And you can always go bigger if you want
 

RSNovi

Feeling the Heat
May 12, 2010
401
Michigan
I was looking at some standard sizes. At least what you could get chimney caps for. This led me to something like a 2'x3'.
 

bholler

Chimney sweep
Staff member
Jan 14, 2014
21,568
central pa
I was looking at some standard sizes. At least what you could get chimney caps for. This led me to something like a 2'x3'.
Your cap will come with the class a system. And you should have a stainless chase cover made to fit whatever size you choose.
 

RSNovi

Feeling the Heat
May 12, 2010
401
Michigan
Thanks for the correction. I meant to say chase cover.
 

webby3650

Master of Fire
Sep 2, 2008
10,915
Indiana
Typically you would just have a chase built whatever size looks good on the house. Then a cover would be built to fit it. I’ve never done 2 that were the same size I bet. We do a few dozen covers a year, all custom to the particular chase. Go with Stainless steel, its the only way to go!
 

maple1

Minister of Fire
Sep 15, 2011
10,484
Nova Scotia
I think I'm missing something. I see 'chase' and I picture a box framed around the chimney, inside the house, floor to ceiling. Where does 'chase cover' come into that picture?

Ours is chased, just big enough to give the clearance specs to the chimney surface inside the chase. Once the chimney gets to the attic, there is no more chase - it just goes straight up thru the roof with a chimney cap on the top. Just like the diagram in that 'Excel Chimney by ICC' pop up ad that I currently see on my screen.
 

begreen

Mooderator
Staff member
Nov 18, 2005
82,969
South Puget Sound, WA
A chimney chase is just an enclosure. It can be interior or exterior.
newchasetop.jpg
 

maple1

Minister of Fire
Sep 15, 2011
10,484
Nova Scotia
Ah Ok. I don't remember seeing anything like that around here. Aesthetically speaking, I think I would rather look at a stainless chimney on my roof than something like that. Guess that would be in the eye of the beholder though.
 

webby3650

Master of Fire
Sep 2, 2008
10,915
Indiana
Ah Ok. I don't remember seeing anything like that around here. Aesthetically speaking, I think I would rather look at a stainless chimney on my roof than something like that. Guess that would be in the eye of the beholder though.
A chase will keep the pipe warmer, preventing excessive creosote buildup. In many cases, the chimney exits low on the roof, requiring a lots of pipe above the roofline. In cases like this, a chase makes the cap more accessible, giving you something to lean a ladder against.
Often people like to use stone veneer on the chase, making it look like a traditional masonry chimney.
 

Ashful

Minister of Fire
Mar 7, 2012
15,727
Philadelphia
Aesthetically speaking, I think I would rather look at a stainless chimney on my roof than something like that.
Maybe begreen didn't choose the most appealing example, but you're saying you'd rather look at this:

maxresdefault.jpg

than this?

House-beautiful-landscape-farmhouse-with-stone-wall-stone-wall-stone-chimney-8.jpg
 
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maple1

Minister of Fire
Sep 15, 2011
10,484
Nova Scotia
Maybe begreen didn't choose the most appealing example, but you're saying you'd rather look at this:

View attachment 226799

than this?

View attachment 226800
Well, not exactly. I could certainly see chasing a pipe that runs up the side. But not one that comes out the top. But like I said, it's in the beholder.

How the heck would you chase that first pic anyway & have it look half decent? The setup will be butt ugly no matter what you do. Is there really a stainless Class A inside that second one?

Invalid examples. :)
 

bholler

Chimney sweep
Staff member
Jan 14, 2014
21,568
central pa
Well, not exactly. I could certainly see chasing a pipe that runs up the side. But not one that comes out the top. But like I said, it's in the beholder.

How the heck would you chase that first pic anyway & have it look half decent? The setup will be butt ugly no matter what you do. Is there really a stainless Class A inside that second one?

Invalid examples. :)
I have built chases that looked like the second 1
 
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Ashful

Minister of Fire
Mar 7, 2012
15,727
Philadelphia
Well, not exactly. I could certainly see chasing a pipe that runs up the side. But not one that comes out the top. But like I said, it's in the beholder.

How the heck would you chase that first pic anyway & have it look half decent? The setup will be butt ugly no matter what you do. Is there really a stainless Class A inside that second one?

Invalid examples. :)
Lots of stone veneered chases around here, folks with money replicating the old PA farmhouse look. Most of them fail, due to things like absurd rambling roof lines, not because of the chimney.

In the first pic, they could have gone stucco, with or without a brick topper.
 
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begreen

Mooderator
Staff member
Nov 18, 2005
82,969
South Puget Sound, WA
Cheez, I was just trying to give an illustration, not a chimney style tour. The chase can be clad in whatever you want. Stud it with diamonds if you wish.
Here's one simulating a brick chimney.
Chimney-Chase-Parts.jpg
 

RSNovi

Feeling the Heat
May 12, 2010
401
Michigan
Closing the loop on this. I personally prefer the look of begreen’s vinyl sided chimney than pipe with the bracing. Mine will also be vinyl since it is on the back of the house. It took a drone for me to finally see the chase.

824DC5C9-8245-4FC3-A214-DBF4BDC32CD5.jpeg
 
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Ashful

Minister of Fire
Mar 7, 2012
15,727
Philadelphia
Closing the loop on this. I personally prefer the look of begreen’s vinyl sided chimney than pipe with the bracing. Mine will also be vinyl since it is on the back of the house. It took a drone for me to finally see the chase.

View attachment 227925
... and people call my joint a barn!

You've got some sq.ft. there, brother.
 

RSNovi

Feeling the Heat
May 12, 2010
401
Michigan
The picture makes the house look bigger than it is.

I am having the wood stove dealer install the pipe. The general contractor didn’t want to take it on.

I think the chase is already 2’ taller than needed.
 

double-d

Feeling the Heat
Feb 8, 2011
322
Northern Michigan - Mio
You can get a Stainless Steel Chase Cover 24 GA. 3' x 2' with all the bells and whistles ...for around $253
The Stainless Steel Chase Covers are made custom to your specifications and most will have a Lifetime Warranty against rust, corrosion and manufacturers defects.
 

RSNovi

Feeling the Heat
May 12, 2010
401
Michigan
Thank you double-d. I like the sound of that chase cover.
 

MAD777

Member
Jul 6, 2016
101
New Hampshire
I am having the wood stove dealer install the pipe. The general contractor didn’t want to take it on.
I'm starting to build next month and found the same situation. I was disappointed at first, but after more consideration I'm glad because I have more cofidence in a specialist doing it right. Plus, some insurance companies want it installed by a sweep or at least inspected by a sweep.

Sent from my Pixel 2 using Tapatalk
 

kennyp2339

Minister of Fire
Feb 16, 2014
4,916
07462
I think the chase is already 2’ taller than needed.
Make the cap isn't that restrictive and buy a soot eater, you got some height there my friend