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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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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2answers
38 views

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

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 ...
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44 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 ...
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1answer
382 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 The fireplace was a coal burner that has since been replaced by a propane fireplace insert.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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0answers
39 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 ...
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63 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 ...