Good Evening All. This is our first summer in our home since we moved last November. I started to notice some slight discoloration on the Sheetrock of my cathedral ceiling in the living room. I got the ladder out to investigate and I believe it is mold.

I’m not really sure where to start with this. One side note is that I have sweating from and AC vent in the cathedral ceiling and the ductwork appears to be laying on the ceiling in the attic.

Any help is appreciated.

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Posted by ItzMe1972

Member since Dec 2013

12719 posts

Posted on 6/7/26 at 9:58 pm to TheRaginCajun

New construction or existing house?

Possible to post picture?

This post was edited on 6/7/26 at 10:00 pm

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Posted by TheRaginCajun

Member since Jun 2012

77 posts

Posted on 6/7/26 at 10:02 pm to ItzMe1972

It’s an existing house. I’m not a photo would do much for you. It is faint discoloration right now. Built in the 80s but renovated in ~2019.

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Posted by ItzMe1972

Member since Dec 2013

12719 posts

Posted on 6/7/26 at 10:24 pm to TheRaginCajun

I have sweating from and AC vent in the cathedral ceiling and the ductwork appears to be laying on the ceiling in the attic.
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I don't think the ductwork laying on ceiling is a problem.

I fixed a sweating vent of mine by making sure it was fully covered by insulation. If not, condensation is likely with hot attic air and cold room air mixing.

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Posted by skidry

Member since Jul 2009

3580 posts

Posted on 6/7/26 at 11:56 pm to TheRaginCajun

quote:
Built in the 80s

I had a house around that age and the insulation around my ductwork was so disintegrated that the duct work was sweating in the attic. Ended up replacing it all.

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