Ask Ted!

If you have any questions you want answered, feel free to drop me a note. If you’ve got a question, chances are, there are lots of others out there with the same question. So ask away!

Note: all comments are moderated unless I’ve approved one of your previous comments. Almost everybody gets thrown off by this, but I moderate comments to avoid spammers. The downside of this is that you won’t see your comments post until I’ve had a chance to review and approve them. Sometimes this can take days (sorry!) Thanks for your patience.


1,330 thoughts on “Ask Ted!

  1. Hi Ted, I’ve enjoyed perusing your site and learning from you. I live in north Alabama, and bought a house earlier this year. The house has a room that was added on to the back of the house about 15 years ago. The room has many windows (which may not be sealed very well judging by ladybug intrusions we have observed). It also has a sloped tongue and groove ceiling, which slants downward as you move away from the original back of the house. We had a new roof put on in February, shortly after we bought the house, and in the process, the roofers removed the ridge vent that was previously there. Multiple roofers advised this, because the slope of the roof is pretty small, smaller than what ridge vents are designed for, so it was causing leaks during windy rainstorms, and also it wasn’t a true ridge since it adjoined a two story brick wall. We do still have soffit vents though, so there’s a way for air to get in the soffits, but no other path out.

    One afternoon in June (when it was very hot and humid), I noticed that there were streaks of water dripping down from the highest point of the ceiling in this sunroom, along the wall that adjoins the original back of the house, and there were also streaks of condensation on the tongue and groove ceiling, again only near the highest point of the ceiling. There has continued to be a very slow dripping of moisture on this wall during the summer, although I never again have observed condensation on the tongue and groove ceiling. I did not observe any condensation on the windows.

    My guess is that humid air from outside was getting into the soffits, traveling upwards and toward the original backside of the house, and then getting stuck there and condensing on the sheetrock wall below and on the tongue and groove. I’m not confident in that explanation though.

    Our current plan of attack is to pull down the tongue and groove ceiling, remove the fiberglass insulation batts, assess the mold situation (we’ve removed a couple rows of tongue and groove near the high point of the ceiling and can see that there may be a mold issue), get new closed cell spray foam insulation applied to the underside of the roof decking (and sealing up the soffit vents in the process to create an unvented roof), and then install a new drywall ceiling.

    Before we go down this expensive path, I was wondering if you could share your opinion about the source of the problem, and how to fix it? I appreciate any insight you can provide!

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