For questions specifically relating to structures that ventilate combustion byproducts of fuel burned in an interior space, such as a fireplace, stove, or furnace.

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6
votes
3answers
6k views

Is installing a chimney liner a DIY project?

My chimney (25ft approximately, one story house) was recently inspected and the guy recommended a chimney liner for the furnace due to the grouting having been eaten away. He quoted $2000 for the ...
6
votes
2answers
7k views

How do I remove a chimney?

I've got a chimney in my 50's-era house that doesn't do anything. It's a regular brick and mortar chimney but it used to be used to vent the old oil heater (it's been converted to natural gas since). ...
6
votes
3answers
1k views

What's a good way to support a freestanding chimney?

I'm working on adding a woodstove to a yurt. The chimney will go out a sidewall and then head up. There is not a good way to brace the chimney to the yurt itself. Here are some options I've read ...
6
votes
1answer
838 views

How to properly seal/cover an unused chimney?

We recently replaced an ancient chimney-vented boiler with a direct-vented one. This boiler was the only thing using our chimney. The chimney is brick and sits in the center of our 120-year-old house. ...
5
votes
2answers
694 views

Is it possible to hang something on the wall surrounding my chimney?

My chimney runs up the center of the house from the basement. Where it passes through the kitchen, there is an obvious bulge in the wall where the wall basically wraps around the chimney. Based on the ...
5
votes
4answers
999 views

How to I safely anchor a safety line to a chimney?

I am going to be installing an antenna at the top of my brick chimney and I'd like to be able to use a safety line with a fall arrestor. The chimney visually looks OK. I'm trying to figure out the ...
5
votes
1answer
487 views

How can I refinish an interior chimney pipe to make it appear rounded?

Right now my interior chimney pipe is hidden behind a wall and I want to remove that wall and expose the pipe, but the pipe itself is not so pretty. My fireplace is a wood fireplace with a double ...
4
votes
3answers
3k views

Contractor suggests caulking cracks in chimney, is that the right solution?

The mortar in our 25-year-old chimney is starting to crack and now leaks into our home if it rains hard. I assume we're probably in need of repointing, but a contractor that has done roof work for us ...
4
votes
1answer
2k views

Do gas fireplaces need chimney cleaning?

Is it necessary to have the chimney cleaned by chimney sweeping service if I use a gas imitation fireplace log (no wood) exclusively? If so, what is the reason? What is the root cause for chimneys ...
4
votes
1answer
171 views

How do I prepare a hole for concrete?

I removed a chimney from my house earlier this year. After everything was cleaned up, I was left with this big hole: I have two questions: (1) How do I know what type of concrete to use? (2) How do ...
4
votes
1answer
166 views

What is this stucco-like finish called?

The chimney is a wide column in the middle of the living room. The finish on this chimney sort of evokes brick, but I don't think it is. It reminds me of stucco, but it isn't that either. The house ...
4
votes
1answer
445 views

What could be causing this leak near my chimney?

I had a new roof put on in 2010 and had no problems... recently I've noticed that I'm getting water in my house. Its coming down along side where my chimney is and making large bubbles in my walls. We ...
4
votes
2answers
3k views

How should I install a chimney for a wood stove in my garage?

I have a new construction 24' x 48' garage that is two stories. It is partial block construction (to middle of 2nd floor) and finished on the top with wood (trusses etc). The floor plan is very open. ...
4
votes
0answers
97 views

How can I add a fireplace to an existing non-fireplace chimney?

Our 83 year old house has a brick chimney covered up with drywall. We have no idea where the original flue was, but it must have vented a wood stove because there is no structure for a fireplace. We ...
4
votes
2answers
2k views

What's the most economical way to remove a wood stove?

I just bought a new house and my insurance company is upset that I have a wood stove in the dining area. They insist that it be 3 feet from all walls and a foot and a half above the floor. ...
3
votes
2answers
890 views

Tips and advice for installing a chimney cap?

I have an older wood-burning fireplace that is missing a chimney cap. I'd like to install one prior to rain season here in California but would still like the ability to use the fireplace now and ...
3
votes
1answer
150 views

Is it safe to use a log burning stove in an old fireplace?

I'm renting a property which has a wood burning stove. Recently I've been investigating ways to make my house warmer (secondary glazing on sash windows etc) and started to wonder how much air could be ...
3
votes
1answer
1k views

How can I reduce whistling due to wind across a gas fireplace vent?

We have a gas fireplace venting through the roof of our attic bedroom; there's a cap on a chimney up there. Double-wall construction, such that it pulls combustion air in from outside. When the wind ...
3
votes
1answer
93 views

Previous owner filled in fireplace shelves with incorrect brick. Can I chisel them out?

My wife and I recently moved into a ranch house built in 1956. If you look closely you can see where the previous own filled in what I assume to be two little nook shelves with regular old brick and ...
3
votes
1answer
84 views

Should my chimney sit on my roof?

I am renting a house built in the 1940s. The mortar around the brick was cracked causing leaks. Someone had built a chimney around the outside of the original chimney. So outside it's twice the size ...
3
votes
2answers
98 views

What prevents mortar from being compressed with the weight of courses of brick?

What prevents Mortar from being compressed when courses of masonry are stacked.
3
votes
2answers
602 views

What should I expect when removing a chimney?

Our brick chimney is leaning away from our house. The breast is in the living room, pretty much flush with the wall. The backside starts in the attached garage, goes through its roof and up past the ...
3
votes
1answer
459 views

Do I have studs on my plaster and lath wall around/above fireplace?

my home was built in 1892. The fireplace was a coal burner that has since been replaced by a propane fireplace insert. I want to mount a TV above the fireplace but am uncertain as to what is behind ...
2
votes
2answers
72 views

Trying to understand clearance regulations on woodstove chimneys

I'm installing a wood stove. The regulations say that the chimney top should be at least 2 feet higher than any part of the roof within 10 feet horizontally . . . from what I've read, this seems to ...
2
votes
1answer
3k views

How to properly close a chimney hole in the basement

I recently removed the old unused wood stove in my basement. I now want to properly condemn the chimney. I found this question which answers what to do with the chimney outside, but I am still unsure ...
2
votes
1answer
110 views

Can I insulate between a brick chimney and drywall?

Can I insulate the space between a brick chimney and the drywall inside my home? I am getting heat transfer from the brick to the drywall in the summer from the sun heating the brick. My thermostat ...
2
votes
1answer
221 views

How do I make a fire break around our chimney?

We've purchased an older house built in the 70's, and one of the two chimney's lacks a fire break, meaning that you can see direct from the basement up into the second floor. There's a gap of ...
2
votes
1answer
182 views

Is it common for a chimney to separate from the outside wall?

The chimney has separated from the wooden outside wall of a pier and beam wooden home. It is 7 years old. The chimney is mortared with rock and a couple have fallen from the top. The gap is about 3 ...
1
vote
2answers
461 views

Can a Wood Burning Stove use a stovepipe made of copper for a chimney?

Planning to install woodburning stove one day. The plan includes exposed stovepipe running up through a loft space, through attic, and out to roof chimney. I know the stovepipe comes in black and ...
1
vote
1answer
183 views

How to remove an old wood stove brick chimney?

I need to remove what is left of an old wood stove chimney that was partially removed from the top at roof level (one story) and the opening roofed over. What is the best way to break out the bricks? ...
1
vote
1answer
1k views

How do I prevent water from leaking down my chimney?

When it rains hard, I get a decent amount of water coming in through my chimney. Is this normal? What can I do to minimize this? It's a relatively new house; it has a guard on top, and the chimney ...
1
vote
1answer
565 views

What type of mortar would I use to seal cracks in our chimney?

We've got a brick chimney that's ~25 years old and it's got a quite a few cracks in the mortar (some hairline, some as thick is a quarter). What's the best way to seal all those cracks? I assume ...
1
vote
1answer
236 views

Can I attach drop ceiling molding to a brick chimney?

I have a drop ceiling in most areas of my basement. The previous owners did not complete the job over top of where the wood stove is, and around the brick chimney behind the stove. I don't think this ...
1
vote
1answer
302 views

What should I pack behind a cast iron fireplace?

I have a cast iron open fireplace which is (loosely) attached to the chimney breast in my living room by the mantle piece. There is a small but significant gap behind it where the bricks have been ...
0
votes
1answer
51 views

Mounting a TV on a chimney breast

In our new house the master bedroom is on the upper level and has a chimney running through the room from the living room below. It's painted brick and all 4 sides are exposed (you can walk around ...
0
votes
3answers
113 views

How far does a ground rod need to be from the foundation?

I need to ground an antenna strapped to my chimney, which requires hammering in a new ground rod. However, the entire side of my house is paved, meaning I can't dig it up to find the foundation ...
0
votes
1answer
243 views

How can I alter a chimney to make the smoke rise higher?

We have a neighbor who loves their fireplace. Every day the temperature drops below 60 or so, there's a fire. I love fires, but we smell every one, and don't benefit from the heat :-). The chimney ...
0
votes
0answers
28 views

What are my options for my chimney? (Ventless fireplace, insulation)

When we moved into our house it had an original chimney (now about 40 years old) but the original owners had converted the once-wood-burning brick fireplace into a ventless gas insert. I immediately ...
0
votes
0answers
36 views

How do I fix a chimney that does not conform to the insurance regulations?

The previous owners installed a fireplace in the house. A wood burning stove. It doesn't seem old or damaged. The stove itself is fine now that we moved it forward an inch and a half. Back to my ...
0
votes
2answers
51 views

Gap between 6“ dia wall thimble & 6” hvac pipe

I bought a 6" dia aluminum wall thimble to vent my 6" dia hvac steel exhaust pipe through to the outside. However, the diameter of the 6" thimble is actually 6 3/4". How do I effectively insulate the ...
0
votes
2answers
76 views

What should I do with my leaking chimney?

We have a brick chimney on the side of our 110 year old, 2 story house. We aren't going to use the fireplace - we have a ventless insert we are going to use. The chimney leaks terribly. We are ...
0
votes
1answer
1k views

Why is getting a chimney sleeved such a hassle … and expensive [duplicate]

Possible Duplicate: Installing a Chimney Liner a DIY project? This seems to be an ongoing theme, and quite annoying I might add. When I first went looking for this to be done, I found some ...