CHI Good Questions: What is This on My Ceiling?

CHI Good Questions: What is This on My Ceiling?

Janel Laban
Apr 1, 2008

Adeline sent us an email: "I have a mystery growing on my ceiling. I moved into my new place a month ago and noticed an area on my ceiling where sap appears to be oozing out of the knots. The surface area on which this is happening seems to be slowly spreading. When I had my inspection in early January, I remember the inspector pointing out that the ceiling was dry, so it has developed since then.

After looking into some of my own theories and finding there is no plumbing above the spot and the only things running between my ceiling and the floor of the unit above me is some electrical work, I'm at a loss. I actually have two questions: 1. Has anyone ever seen anything like this before? and 2. Any ideas how to clean it up?"

Can anyone help Adeline with this mystery? Please let her know in the comments

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