21 votes

Why does a builder think this chimney is about to collapse?

How can he know just by a visual inspection? Your second photo shows that the top left may have been pointed sometime in the past 20 years; the rest hasn't seen maintenance in considerably longer. ...
Tetsujin's user avatar
  • 11.5k
13 votes
Accepted

Rebuilt chimney still leaking

I'm judging by fuzzy photographs, but the flashing seems to have been done incorrectly. When done right, shingles and step flashing alternate such that any water running under one is still on top of ...
isherwood's user avatar
  • 138k
10 votes

Black tar like substance and streaks on attic roof and stains on chimney

I would suspect fungus on the chimney, possibly due to poor weatherproofing on top. If water is leaking and absorbing into the masonry it would support all manner of living things. You would need to ...
isherwood's user avatar
  • 138k
9 votes

Why does a builder think this chimney is about to collapse?

If you don't trust a professional's advice, get a second opinion. You generally want to get three evaluations and price quotes anyway, unless you do trust them.
keshlam's user avatar
  • 29.1k
7 votes
Accepted

How do I prevent a water heater pilot light from blowing out on windy days?

As wind blows against a building some areas experience a rise in air pressure and other areas experience a drop in air pressure. That difference in pressure can cause a surprising draft through the ...
Greg Hill's user avatar
  • 30.6k
6 votes

Black tar like substance and streaks on attic roof and stains on chimney

The black on the chimney is probably moss. And if other houses of the same age have it too, then its probably fine. The black tar is probably tar or some sort of wax. It was probably transferred ...
Rohit Gupta's user avatar
  • 6,374
5 votes
Accepted

What's the deal with this (fake?) chimney on my house?

Your dad is wrong. Chimneys have been used for non-fireplace heating systems since the days of the Franklin Stove. Also, remember that the interior of the house may have been drastically rearranged ...
keshlam's user avatar
  • 29.1k
5 votes
Accepted

Chimney cleanout full of water. Basement leaking

I added a chimney cap, and the leaking was significantly reduced during rains. (Image from http://Lowes.com) I later noticed that during rain, water was pooling on the ground near the chimney. So I ...
Bort's user avatar
  • 460
5 votes

Should I fill the gap between sleeve and chimney structure?

I do not know if it is necessary to actually fill it, but as a minimum I would use metal to create a collar to keep it stationary and to keep the weather, bats and other critters from causing future ...
peinal's user avatar
  • 1,271
5 votes

Sealing siding around a chimney

You need to install aluminum or copper flashing all around chimney perimeter that would overlap vertically down from the top of the siding by at least 5–10 inches down. You would need to grind out a ...
Sokolq55's user avatar
  • 145
5 votes

Relocating or removing old vent hood outlet/receptacle

The proper way to get rid of a box like that is to go back to the prior box and run a new, longer, cable from there. That is often a lot of work, so I can see why the electrician didn't do that. You ...
manassehkatz-Moving 2 Codidact's user avatar
5 votes

Rebuilt chimney still leaking

Isherwood is correct - this looks like very poor flashing. I would also add that the lead has not been well formed into the corner. If you are exposed to driving rain in high wind this would ...
manicseagull's user avatar
4 votes

Chimney still leaking despite reflashing and coating

Water gets into a chimney by one (or more) of five ways: Via the actual opening of the flues Yours have metal covers, so this is probably okay. Via missing, cracked or deteriorated flaunching on the ...
handyman's user avatar
  • 3,313
4 votes
Accepted

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

A cheap box fan will not push air through any enclosed structure like a chimney unless it is sealed into the opening so air will not just recirculate around the blade. Also, a fan used to move air ...
d.george's user avatar
  • 12.4k
3 votes

Inspection of flue from fireplace

Of course if you can get a camera up (or down) the flue then you might be able to see excessive build up of carbon (etc.) deposits. However, it will be as black as can be up there and the small light ...
handyman's user avatar
  • 3,313
3 votes

Damp patch on the chimney wall

...This is one school of thought: seal the chimney to prevent air flow. By preventing air flow, you also prevent the flow of moisture the air carries with it, and the formation of condensation on the ...
MicheleTreCaffe's user avatar
3 votes
Accepted

Repair Leaking Roof/Chimney In Winter

No. That would be like sealing the bottom side of a sponge--moisture will travel through it to emerge in other areas. You can probably accomplish the repair even in winter. A water hose will quickly ...
isherwood's user avatar
  • 138k
3 votes

1920s stove pipe walled off behind kitchen

It almost certainly is in sections, but to get the first section out you'll have to get the T away from the wall. Asbestos putties were really common. That said you have a choice, pull it out and ...
Bryce's user avatar
  • 10.9k
3 votes

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

That is a wood burning masonry fireplace with a gas log lighter. Gas fireplaces aren't supposed to have dampers, so the damper lets you know that it was originally designed for wood. The log lighter ...
thaddeus's user avatar
3 votes
Accepted

Chimney damper does not open

You need to slide that handle over to the larger slot and then pull it down or push it up. Ok, good you got it. It was hard to tell from the picture which way it operated. You could try some WD-40 but ...
JACK's user avatar
  • 80.6k
3 votes
Accepted

Replace rotted plywood sheathing behind stucco

I'm fairly certain the correct way to fix this is "rip off the stucco, replace the rotten wood, apply new stucco."
Ecnerwal's user avatar
  • 215k
3 votes
Accepted

What is the best way to drill anchor holes in a chimney?

You need to drill this from the inside, because that’s the critical location for the tie-back to be connected. Level and inline with the joist will be close enough by virtue of following the bottom of ...
Aloysius Defenestrate's user avatar
3 votes

How is the baffle board of this stove able to heat up without combusting?

Ceramic (and "non-ceramic" or silica-free - less hazardous to handle) wool is a common refractory material that's flexible/soft. The product sequece generically would be from Asbestos (...
Ecnerwal's user avatar
  • 215k
3 votes
Accepted

Need high temperature edge-grip seal for flue

That looks like the correct one, I found it through my own googling and realised it was the same as yours. I would contact them for your use case. The style of chimney you have looks like the edges ...
Rohit Gupta's user avatar
  • 6,374
3 votes

Why type of drywall-like material to use on a gas fireplace?

Tile backer board / cementboard is fairly standard in this application, since the demise of asbestos-cement board as a product any sane person would use or make/sell.
Ecnerwal's user avatar
  • 215k
3 votes

Relocating or removing old vent hood outlet/receptacle

I feel your pain. To totally remove the box will require moving the cable/s in the box. There isn't enough info about that to properly answer how. The easiest alternative is to put a blank cover on ...
RMDman's user avatar
  • 29.3k
3 votes

Is visible daylight between lead flashing and the chimney brick stack normal?

I am not an expert on brick chimney flashings. If this is horizontal then there shouldn't be daylight like this. But it would be difficult to install flashing on a rough brick surface and make it ...
Rohit Gupta's user avatar
  • 6,374
3 votes

Is visible daylight between lead flashing and the chimney brick stack normal?

I'm not a professional but to me that flashing is pretty obviously no good. (see update below) It looks to me like you have one piece of metal that was bent into a stair-step pattern with additional ...
aquaticapetheory's user avatar
2 votes

Removing lower section of an old chimney?

Safety is a concern but truthfully, I did it! 3- 2X6’s on the floor of the 2nd level. Took out everything below with a sledge. NEVER AGAIN! These guys are correct. Brick is very heavy, dirty and an ...
Rhino's user avatar
  • 21
2 votes

Brick chimney with no smoke chamber: is there some type of metal insert that would work instead of rebuilding inside of chimney?

Yes chimney liners are available depending on the local codes. Stainless steel and aluminum flex are common. You may need to contact the logset manufacturer to find out what is approved. If the mortar ...
Joe Fala's user avatar
  • 6,364

Only top scored, non community-wiki answers of a minimum length are eligible