Questions tagged [chimney]

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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60 views

Water Heater (Tankless), Furnace, Chimney? What order of work? Different contractors?

PRIORITY 1: I have a 21 (yes 21) year old water heater (go AO Smith!) that I want to replace with a tankless water heater (live in MD). WANT 1: I have a chimney that needs to be lined and a fireplace ...
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28 views

How to install a stainless steel chimney safely with a metal tube and a concrete foundation?

I have a stainless steel chimney which I want to connect with the oven inside of my mongolian yurt. Going through the wall is easy, the hard part is to deploy it safely on the ground so the chimney ...
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1answer
34 views

What's the best way how to seal a removed chimney top?

I want to remove a brick chimney down to the roof line because it's unused and also because it's a hazard from earthquakes in the SF bay area. This chimney came down in the 1989 quake but was rebuilt. ...
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40 views

How can I tell whether I'm drilling into the chimney brick or a joint?

The chimney runs up the center of the house which is through my kitchen. I want to hang a pot rack on the plaster wall surrounding the chimney but have read on this site to be sure not to drill into ...
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1answer
82 views

Can I put a box fan in a chimney to help circulate out hot summer air?

I have a classic brick chimney for a wood fireplace only (i.e. no hot water tank or other things sharing the stack). In peak summer heat, the interior of the upstairs is well above the exterior ...
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0answers
59 views

How should I seal a flexible flue liner passing through large clay thimble?

I'm replacing my atmospheric venting natural gas water heater and I'd like to clean up the type B venting solution while I'm at it. I've had a high efficiency furnace put in so now only my gas water ...
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1answer
38 views

What is the correct way to seal off a fireplace chimney?

I've seen people say cap it at the top, I've seen people say stuff insulation in the bottom, I've seen people say brick it off at the bottom and seal it at the top. I've also seen all of these ...
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1answer
43 views

Chimney damper does not open

My chimney damper does not open. I bought the house last year so have never used it before. Any suggestions on how to get it unstuck? Note that the damper cable DOES move from one side to the other ...
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2answers
69 views

Remove fireplace leave metal chimney on roof

I removed a wood-burning stove and cut through the double-lined metal chimney flue in the attic. In the short term I jammed some insulation in the metal liner and left the rest of the chimney with the ...
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1answer
51 views

Wiring in false chimney breast

I am installing a wood burner with a false chimney breast around a double skinned flue. The chimney breast will be metal stud (or do you only call it a stud if it's wood?) with fire board as per regs ...
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2answers
80 views

Install outlet above fire place in 70's era stone wall

I'd like to install an outlet above my wood burning fireplace so that I can mount a tv. Problem is the entire wall is a 70's era stone wall. I thought I had a slick solution. There is a smaller ...
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2answers
72 views

Issue with chimney and wood burning insert

We are interested in adding a wood burning insert to an existing fireplace. Our issue is that our chimney is already lined: but not with the typical liner. At the top are terracotta tile liners, and ...
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0answers
24 views

Reline chimney or "chimney kit" on furnace exhaust

I had my brick chimney inspected, and the inspector found that the cracked clay tiles in the two flues (one for a gas fireplace, one for the furnace and gas water heater) need to be replaced. He ...
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2answers
91 views

How would you frame this chimney chase?

FYI: No inspections or permits, I live in the middle of mostly nowhere. But, of course want to do this "right". Details: While face on the right is 9/12, face on chimney side is 11/12. This ...
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0answers
57 views

Exposing brick chimney in kitchen

My 1916 house has a brick chimney (no fireplace) that runs through the corner of my kitchen and I was considering removing paneling/plaster to expose the brick. I chiseled away a small test square and ...
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0answers
36 views

How to safely bring a water heater exhaust above the roof line

Background A 5 story house in Rotterdam, the Netherlands, constructed in 1905 is divided into 4 units and each unit has its own gas water heater. The exhausts for these water heaters are aluminum ...
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1answer
254 views

Why are some bricks crooked in my attic wall?

I live in a victorian terraced house, and one of the chimney breasts has been removed at some point in the distant past. However they didn't remove the part in the roof, which was poorly supported. I'...
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1answer
97 views

Gas Combustion Air Duct Re-Route Considerations

What are the safety/legal considerations for safely re-routing gas combustion ducts? I have a two-story house with two gas combustion air ducts. The left duct serves a fireplace that is not in use and ...
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0answers
112 views

Chimney with adjacent brick shafts into attic

I have dual fireplaces back-to-back on either side of a wall. They are separate fireplaces; there is clearly a solid barrier at the back of each fireplace. They and the whole chimney are brick. We ...
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1answer
851 views

Can I use an old chimney as a electrical chase

TLDR: Are there any code/cost reasons we couldn't run BX/romex to our attic through an old disconnected chimney? Long Question: I will be closing on a house shortly and there is a hole in the attic ...
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1answer
85 views

What's going on with this chimney?

Tore the walls off and found the chimney looking like this: It's seen a lot of leaking as you can see from the streaks. The exterior portion was rebuilt last year. That horizontal crack running ...
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1answer
141 views

How to ventilate a chimney taken down to attic (roof line) level?

I had a leak in my chimney flashing, so the roofer recommended taking the chimney down to attic level. He repaired the roof where the chimney was (board, felt and roof tiles). All was good, but a few ...
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1answer
577 views

What happens if range hood is smaller than cooktop?

If the range hood is 70% size of cooktop, shouldn't the smoke from sides of cooktop still get sucked towards middle hence getting sucked inside? So why people recommend range hood bigger than cooktop?
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1answer
40 views

How to maintain an old brick wall

we have a small section of exposed brick from an old chimney in the kitchen. The chimney is now used as an exhaust for the furnaces in the basement (and maybe for the kitchen exhaust in a different ...
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0answers
80 views

Unused chimney sweats when it rains

I have a chimney in my dining room that leaks or sweats. The chimney ends here because I can't find it in the basement. I am assuming that it was sealed at this location. The roof is new, and I also ...
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2answers
145 views

How does a water heater flue work?

Two years ago I had my roof re-shingled and the chimney bricks re-pointed. There was heavy snow this year. I was in the basement when I noticed black liquid on the floor in the utility room. I know my ...
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1answer
66 views

How tight a fit for a chimney liner?

We are evaluating what size flexible chimney liner to use for a new fireplace (masonry heater). The liner will pass through an existing concrete flue. The flue is constructed out of 16" square ...
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3answers
570 views

chimney leak black liquid

2 years ago I had my roof re shingled and chimney re grouted. This year I noticed a black liquid leaking into my basement where my water heater is located. The water heater I know is vented out the ...
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1answer
112 views

Placement of a 5" hole in foundation

I have some concerns over where to place a 5" hole for a pellet stove chimney. The stove is in our basement, and I'd like to have the chimney exit through the exposed part of the foundation. I have ...
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0answers
679 views

Closing a fireplace to the inside but opening it to the outside

We are buying a house that has a fireplace in the den. I want to turn the den into the kitchen. It’s the perfect space for it in the house. The laundry room is on the other side of the wall, so we ...
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2answers
73 views

How should I arrange artificial logs, and should they become sooty?

There is a chimney powered by natural gas: I'm using fake woodchops which are made of some sort of cooked clay. I have two problems: I don't know what is the proper way to arrange fake woodchops on ...
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1answer
488 views

How to fix chimney hole in roof?

I've starting insulating the roof and that got me looking at the "old" hole where a (useless) chimney used to be. That chimney got removed for a solar panel setup. As I'm insulating, this needs to be ...
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1answer
74 views

Install a hardened glass in front of chimney

There is a chimney like this: I have ordered a hardened glass with four holes to be installed in front of chimney with dimensions like this: There is a 2 cm empty space below glass to allow fresh ...
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1answer
434 views

Chimney still leaking despite reflashing and coating

My chimney was leaking and the contractor pulled apart the roof around it and reput it with proper sealing and coating. Then he also coated the entire chimney with Geocel siliconized seal which is ...
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2answers
1k views

Do these materials typically contain asbestos?

Update I tested samples at a local asbestos certified lab and all came back 100% clear of asbestos. Thank you all for your advice. I’m new here and a new home owner. Just purchased a condo in a two ...
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0answers
50 views

Fireplace flue that can't be cleaned?

A licensed chimneysweep recently inspected the sole flue in our ~100 year old house. He reported that "buildup is not too bad, but the flue should be cleaned." He also reported that the flue could NOT ...
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2answers
181 views

Gap between sleeve and chimney structure

Currently, my chimney is brick and has a 8" type B metal duct pipe coming out of it as a sleeve, which exhausts home heat and waterheater appliances. The chimney was dormant for many years before I ...
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1answer
106 views

I have 5 natural gas appliances in my basement, can I replace just one with a power vented exhaust?

I live in a 3-family house. I have 3 chimneys and want to eventually remove one of them. One of the furnaces in the basement is gravity venting through the chimney to be removed. Now I need to replace ...
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2answers
40 views

Help me find a replacement vent

Have a wood burning fireplace and the chimney has an air intake vent. The vent has seen better days but not sure what to ask for at the local stores. See photo [ update ] After getting up in the ...
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2answers
3k views

How can I tell if this is a gas or wood burning fireplace

From what I've been able to determine what's pictured is a gas log lighter for wood burning fireplaces. The prior owner did some questionable stuff so I don't know if it was originally gas and he "...
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1answer
602 views

Fixing a stuck Fireplace Damper

I recently bought a house with a gas fireplace. The house was built in 1997 in Texas. The fireplace damper is stuck open and I can't figure out how to fix it - I had a look and it doesn't appear to be ...
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1answer
76 views

Is a 44" chimney too short to create a sufficient draft? [closed]

I put a wood-burning stove in a motorhome but realized that the chimney might not have enough height for an adequate draft. I've got a single double wall stove pipe going straight through the roof ...
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1answer
153 views

Small patch in wall sheathing behind masonry chimney

I noticed a small hole, about 14” x 14” in our attic on the gable side. I wonder if it used to be a gable vent. Home was built in 66’ What can i do to patch this up? It looks like this sheathing ...
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2answers
139 views

Water around furnace: culprit?

Problem: After heavy rain, water pools around our basement furnace. After climbing onto the roof, I found a mysterious (plumbing?) vent. This post seemed relevant, but 0.5 gallons comes in after a ...
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3answers
143 views

1920s stove pipe walled off behind kitchen

I have a giant metal pipe filled with concrete or something, it doesn't go anywhere, it's just taking up space in my closet. I assume there used to be a big wood burning stove in the kitchen, and ...
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1answer
246 views

Smell from recently capped chimney

We had our chimney capped a couple of months ago (the next-door semi were having theirs done, so we said "yes" to their contractor doing ours at the same time). The contractor has removed the chimney ...
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1answer
50 views

Chimney flue repair before installing liner for wood burning insert

Planning on installing a wood burning insert in exsisting fireplace, the top of the flue at the chimney is spalling and was wondering if/options of repairing? the wood burning insert will use a ...
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1answer
69 views

How to demo a partially structural chimney?

Just bought a new home and would like to remove its chimney. It was originally built on the outside of the home and they built a carport up around it. It looks like it may have sprung a leak, so the ...
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1answer
714 views

Crumbling bricks behind fireplace

I had the fireplace removed in my house but the back wall bricks are in bad condition. The surface is crumbly around the area behind the opening, but seem to be ok higher up. Although the quick job ...
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0answers
40 views

Removal of 2 story chimney with deteriorated bricks

The bricks of the chimney are deteriorated beyond repair. it is located on the outside of the house and is a 2 story structure. The fireplace has been converted to gas logs and the chimney is not ...