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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1answer
74 views

I drilled a hole in the fireplace flue

I was trying to hang a shelf on the wall in my living room and was drilling holes to plug fishers in it. Accidentally I found myself drilling into part of the flue of the fireplace (people living in ...
3
votes
2answers
75 views

Damp patch on the chimney wall

I have a problem with condensation on the wall between my living room and the chimney and I would be grateful for suggestions as to how to tackle this. Some background: when I bought my house the ...
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1answer
406 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 ...
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2answers
324 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 ...
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3answers
160 views

How much mortar between bricks?

Our Chimney was in bad repair, and we had two chimney companies come and and say basically the same thing, it needed to be partially torn down, re-bricked, new crown, new damper door. Ok, so the ...
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0answers
17 views

Chimney removal/patch at basement floor

I recently demolished a chimney, for time and lack of energy I stopped just above basement floor level. I also was a bit surprised that the bottom of the bricks goes below the top of the basement ...
2
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2answers
116 views

Ceiling wet at corner of chimney

Whenever it rains, the ceiling becomes wet at the corner of the chimney. I ASSUME it's just a small leak, but obviously I don't want it to become any worse. I have a flat roof, so getting up there ...
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0answers
37 views

Removing a Rayburn Solid Fuel Cooker - Issues to consider

I have a solid fuel Rayburn Regent cooker (essentially an Aga) with built in boiler in my kitchen, which I want to remove. It is no longer connected to the heating system, but appears to be connected ...
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2answers
356 views

Attaching a heavy item to a 'powdery' external wall

I have a house in the UK built circa 1870. The external walls are London brick in Flemish bond I think, and are in a single layer (no cavity wall construction). At some point many tens of years ago, a ...
2
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1answer
67 views

Can I use the old and not used anymore furnace chimney to vent out my basement?

My chimney is not used anymore. Would it be possible or recommended to use it to vent the basement ? I would clean it and install a fan at the basement end. thanks
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1answer
33 views

Should I plug unused chimney ports in basement?

My house used to use the basement for gas heat and the water heater that were using these, 3.5" and 5" ports in the chimney stack. The whole chimney is no longer used but I want to keep the option ...
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1answer
40 views

Code requirement for depth of Counter Flashing and material sealant?

Okay, I've got a recently-installed standing-seam metal roof. The roofers ground out the brick in my chimney to install counter-flashing. Recently there was a big leak around the area of the chimney. ...
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3answers
3k 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 ...
6
votes
3answers
2k views

How would one extract a brick chimney embedded in the middle of a house?

I have a no-longer-in-use brick chimney running from basement to attic (roof was closed over it), left over from earlier heating systems. The space alongside it is being used for plumbing and ...
0
votes
1answer
22 views

Furnace and Water Heater Ventilation pipe

I have a home that was built in 1924, the pipe that vents my furnace and water heater is green and it is located in my chimney. The top of the chimney is open in my attic, you can see the green ...
3
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3answers
251 views

Spray foam insulation around wood stove pipe

I recently had some spray foam installed in the attic and the crew put it right up against the chimney pipe. Is this a concern? Should I carve out 2" and replace with something? Pictures:http://m....
1
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2answers
79 views

Chimney crown repair - cover holes in bricks?

Getting ready to repair the chimney crown, using this Family Handyman article as a guide. On our chimney, there is a line of bricks around the crown that have exposed holes in them. The holes are ...
0
votes
1answer
28 views

Is my chimney safe if it has ash on the walls of it?

I've read a bit about tarry, shiny creosote, and I don't have that. What I have is a thin coating of soot and some flaky pieces here and there. Is this something I should worry about, or just start ...
1
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1answer
58 views

Will using a Chimney Balloon to insulate my fireplace block the ventilation of my water heater and furnace?

My house was built in 1920 in Providence, RI. I'm not sure of the design of the entire chimney, but the water heater and furnace vent into the chimney. I am considering using a Chimney Balloon, but ...
2
votes
2answers
102 views

Is there a required spacing between waste vent line and chimney?

This question seeks answers with one of the following as supporting evidence: International standards, other standards widely recognized in multiple areas of the United States, or sound building and ...
1
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1answer
75 views

Options for restoring or otherwise utilizing old chimney

My home (in East Texas, built in 1885, two stories, pier and beam) has two chimneys, one of which I would like to reopen. Apart from information gleaned online, I have no experience with chimneys or ...
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2answers
136 views

How can I force hot air through this fireplace grate?

Ok, here's the front of my fireplace (note the grates on the top and bottom): Here's the model tag: This fireplace came with the house and I know almost nothing about it except that the chimney was ...
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1answer
257 views

What is the best way to close gaps between a chimney and roof from the inside?

From my attic I can see gaps to the outdoors along the outside corners of the chimney. Primarily this is a problem with both wasps and bats squeezing themselves into the attic. Also, a recent ...
4
votes
1answer
7k 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 ...
3
votes
2answers
373 views

How can I air seal around a brick chimney with a metal flue liner?

We have a 1954 brick chimney that has a metal liner inside and is only used by the natural gas hot water tank. It's had fiberglass right up against if for guessing 20+ years. I'm air sealing the ...
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2answers
89 views

Can I use single walled stove pipe for my wood stove?

I have a wood stove that I'm going to use in my work room that is on the first floor of my house. I was planning on running it out the side of my house and then the chimney go up next to my house. I ...
0
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1answer
45 views

Can fiberglass insulation cause leaks?

I've recently bought a 100 year old wood frame house from a DiY guy who took decent care of the place. He didn't put any insulation in the attic though and my home inspector said insulation is a great ...
0
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0answers
78 views

How to strengthen a giant pole made out of seven 2m long 40mm diameter plumbing waste pipes?

The problem: I have a plant growing out of my chimney. Last year I had a chimney sweep go up on the roof and remove the plant and fit a cowl/ cap onto the chimney costing over £500 including cost of ...
6
votes
2answers
1k views

How can I keep animals out of my chimney?

I own a three story house with two chimneys. The chimney in the center of the house has two flue liners, one of which is used by our hot water heater and the other was for a fireplace that is sealed ...
1
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1answer
767 views

What type of caulk can I use between the furnace vent pipe & flashing on a roof?

Looking to seal a gap between my furnace's vent pipe & the flashing on the roof, specifically here: I'll have to check if there's a missing storm collar too, but should I use High-temp silicone,...
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3answers
168 views

Removing lower section of an old chimney?

I know that removing an old unused chimney from a house is done from the top down. I'm just wondering if it's even thinkable to remove a mid-section from the chimney, while reinforcing under the ...
1
vote
2answers
800 views

Bringing unused chimney down below roof line?

I'm in the middle of renovating a balloon-framed house from the 1890's. The house is currently gutted. It originally had a standing-seam metal roof that was penetrated by a central chimney. At some ...
1
vote
1answer
349 views

Can we mount a TV over a fireplace with the chimney directly behind it?

We have a home built in the 1950's and I'm assuming the chimney/fireplace is original. We'd like to mount our 50" TV over the fireplace. Directly over the mantle is a wall, but we believe that ...
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0answers
68 views

Is it safe to seal the exterior of a stone chimney?

We have a 1938 stone chimney (not brick) that is severely deteriorated. We are going to repair the mortar immediately and put a cap on top, but we're unsure about weatherproofing the stone. We do want ...
5
votes
2answers
1k 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 ...
0
votes
1answer
90 views

Remove interior concrete chimney

I have an old chimney from a long-gone oil furnace. It does not go through the roof, just cut flat at the floor of the attic. I was hoping I could remove it brick by brick, starting from the top ...
1
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1answer
49 views

Stainless or aluminum chimney liner

We replaced our oil burner with natural gas (not the high efficiency type) and it appears the cooler exhaust is causing heavy condensation near the roof. Chimney company wants to install a stainless ...
1
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1answer
105 views

what options do i have dealing with a chimney downdraft

I have a prefabed fireplace that can be either gas (current setup) or wood. I'd like to convert it to wood (gas assist), but am being told that I've got a severe downdraft, and would either need a ...
1
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1answer
112 views

Chimney on 100 year old home has pulled away from outside wall

I am restoring a 100 year old one story wood frame home with a metal roof. The original foundation sits on cut logs. The chimney has pulled away from the roof line which leaves an exposed area where ...
2
votes
1answer
86 views

How can I unstick my ash dump door?

I recently had my fireplace inspected and started using it again. I went to clean the ash out and noted I had an ash dump door. This door appears to be stuck. I expect to be able to open it from the ...
7
votes
4answers
4k 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 ...
1
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1answer
133 views

Unused Chimney Flues

I have a chimney with three flues (exterior chimney on a one story house). One is for a wood burning fireplace we do use. The other two were for the furnace and water heater but are both no longer ...
2
votes
3answers
1k 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 ...
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2answers
6k views

Water entering into fireplace during rain

I recently observed water is coming in the fireplace during the rain. Although it is about a drop per second or so, it is can easily fill up a small pan during a stormy and rainy day. I don't think ...
2
votes
2answers
8k 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 ...
3
votes
1answer
901 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 ...
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2answers
614 views

Should I install the exhaust hood outlet through the chimney or house wall?

What are the advantages and disadvantages of implementing an outlet of a kitchen exhaust hood through a chimney or directly through the outer wall of the house? There are unused chimneys in the house ...
0
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2answers
627 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 ...
3
votes
1answer
128 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 ...
0
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3answers
6k 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 ...