Two Rules for Humidity

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prime

Subtitle: 
To prevent moisture damage from humid air, just do these two things

Images: 

Because I’ve written so much about moisture in buildings, I get a lot of questions on the topic. Some are about walls. Some are about the attic. Some are about windows. Some are about the crawl space (which generates the most questions on this topic).

The key to answering a lot of those questions boils down to an understanding of how water vapor interacts with materials. Once you know that, it’s easy to see the two rules for preventing damage from humidity.

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Two Rules for Humidity

Prime: 
prime

Subtitle: 
To prevent moisture damage from humid air, just do these two things

Images: 

Because I’ve written so much about moisture in buildings, I get a lot of questions on the topic. Some are about walls. Some are about the attic. Some are about windows. Some are about the crawl space (which generates the most questions on this topic).

The key to answering a lot of those questions boils down to an understanding of how water vapor interacts with materials. Once you know that, it’s easy to see the two rules for preventing damage from humidity.

read more

An Interesting Moisture Problem in a Trendy Restaurant

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Subtitle: 
Observations by astute diners give clues as to the source

Images: 

I’ve got the curse, you know. I can’t walk into a building and not check out what’s going on with ductwork, windows, and anything else that lets me apply what I know about building science.

Recently, I went to lunch at a trendy restaurant near Emory University and of course looked up at the ceiling. You can see what caught my attention in photo at right. The restaurant is only three or four years old, so I’ve been watching this problem get worse for a while now.

I have a few ideas about what’s happening here. Do you?

read more

An Interesting Moisture Problem in a Trendy Restaurant

Prime: 
prime

Subtitle: 
Observations by astute diners give clues as to the source

Images: 

I’ve got the curse, you know. I can’t walk into a building and not check out what’s going on with ductwork, windows, and anything else that lets me apply what I know about building science.

Recently, I went to lunch at a trendy restaurant near Emory University and of course looked up at the ceiling. You can see what caught my attention in photo at right. The restaurant is only three or four years old, so I’ve been watching this problem get worse for a while now.

I have a few ideas about what’s happening here. Do you?

read more

Pete’s Puzzle: Mold on Painted Clapboards is Food for Thought

Subtitle: 
There is mold on the factory-primed, latex top-coated wood clapboards on the south but not the north side of our house

Images: 

Whenever my wife starts a conversation with, “OK, Mr. Building Scientist,” I know I am in some kind of trouble. That proved to be the case one day when we were out hanging laundry on the south side of our house.

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