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
1answer
1k 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. ...
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
2answers
1k 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 ...
1
vote
1answer
355 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 ...
1
vote
1answer
645 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 ...
0
votes
1answer
2k 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 ...
5
votes
3answers
7k 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 ...