chimney plug

[BrotherBart]

If that were true, the stove would not burn at all when the door is closed and the damper is shut. But it obviously does.

Give that a try on a warm day and get back to us.

 

[Charles2]

That is because the heat differential causes draft with out that heat differential there is no draft.

A couple of years ago I cut a 1 foot diameter hole in the ceiling of a 1-story house, then went into the attic and felt the air rushing thru the hole, blowing my hair. The house with the stove is 2-story, so I would expect the natural draft to be even worse.

You do realize that to tight a house in the summer can cause lots of issues.

Yes, I'm pretty familiar with building science, but I don't think I'm going to cause any problems by plugging the chimney.

do what i do in the summer and open the windows then that tiny amount of air moving through the stove wont matter in the least.

In Georgia there's a limit to what is tolerable without air conditioning.

On a hot day, the stack effect of the house draws warm, humid air down the chimney

Now that makes no sense to me - I thought stack effect always draws from bottom to top. But either direction, I don't want air moving in the chimney.

 

[bholler]

A couple of years ago I cut a 1 foot diameter hole in the ceiling of a 1-story house, then went into the attic and felt the air rushing thru the hole, blowing my hair. The house with the stove is 2-story, so I would expect the natural draft to be even worse.

Ok what was the temperature differential? Air is not going to rush out of your house at the top unless the temp or pressure in your house is higher that the temp or pressure outside the house. It is that simple.

Yes, I'm pretty familiar with building science, but I don't think I'm going to cause any problems by plugging the chimney.

Yes but how will that tiny amount of air effect the energy efficiency of your house?

In Georgia there's a limit to what is tolerable without air conditioning.

I understand that but people tolerated those temps for a long time i have absolutely no problem with you using air conditioning but don't tell me about being as energy efficient as possible if you are going to. Because no you dont need air conditioning you can survive fine with out it.

Now that makes no sense to me - I thought stack effect always draws from bottom to top. But either direction, I don't want air moving in the chimney.

No the stack effect draws for high pressure to low pressure. That is very basic physics

 

[mellow]

Too bad 9" is the smallest they make. I'll bet if I put the 9" in a 6" chimney it won't end up being air tight. I think just a disc with a gasket on the edge would be best.

From the website: This balloon will work on a chimney up to 3" smaller in width or height. This Chimney Balloon will not work on a chimney any larger than 9"X9".

 

[Woody Stover]

Air is not going to rush out of your house at the top unless the temp or pressure in your house is higher that the temp or pressure outside the house.

Yep, I misstated that stack effect would occur on a hot day. Maybe if the attic got real hot, I don't know. Now, at night the house may be warmer than outside... At any rate, I've seen moisture in my stove so I plug the chimney.

 

[pma1123]

I had an issue with sideways rain going down the SS supervent cap/doublewall and winding up with a puddle in the ash drawer of my smoke dragon a few weeks ago. I just went up and removed the cap, put a plastic bag over it and reinstalled the cap. Then cut off the excess plastic. We haven't had monsoon rains since then, but it should solve the problem. Having a note in the firebox is a good idea.
The supervent cap design sure seems like this would be pretty hard for rain to find its way in, but I had this same issue with big rains last year also. Anyone else run into this?

 

[bholler]

Yep, I misstated that stack effect would occur on a hot day. Maybe if the attic got real hot, I don't know. Now, at night the house may be warmer than outside... At any rate, I've seen moisture in my stove so I plug the chimney.

yeah it can happen for sure but it is rare in most cases i find it is much better to let the little bit of air move through the system

 

[Ashful]

Read up on OCD. There is medication.

 

[Charles2]

Or a free sample from caplugs.com. that's what I use on my pellet stove venting.

That's an interesting website, but I don't see anything in 6" diameter. What model are you using?

 

[BrotherBart]

The plastic cap on a 34 ounce coffee can fits perfectly on a six inch chimney pipe. I will sell you one for $34.99 plus shipping.

 

[Woody Stover]

Is it guaranteed? How much is shipping?

 

[budman]

I use a 6" pvc sewer cap and made a band with flashing and 2 s/s clamps for the top of chimney.Had a bird in the stove a couple of
years ago and had to do somthing.

 

[Ashful]

Why not just put a bird cage up top, at the cap?

 

[CenterTree]

The plastic cap on a 34 ounce coffee can fits perfectly on a six inch chimney pipe. I will sell you one for $34.99 plus shipping.

Wait, I thought those were just for mosquitoes.

 

[budman]

Why not just put a bird cage up top, at the cap?

Those things catch to much gunk!!

 

[tarzan]

A couple of years ago I cut a 1 foot diameter hole in the ceiling of a 1-story house, then went into the attic and felt the air rushing thru the hole, blowing my hair. The house with the stove is 2-story, so I would expect the natural draft to be even worse.

My goodness man, you must live in a balloon. Plug the chimney in what you describe and shut the front door real fast, you have yourself a bazooka!

 

[Ashful]

Those things catch to much gunk!!

What "gunk" is coming out of your chimney? You burning wet wood? My cages seem to stay clean enough.

 

[budman]

What "gunk" is coming out of your chimney? You burning wet wood? My cages seem to stay clean enough

You must be one of the pests that I try to keep out !