Each time I send out a newsletter or eblast like this, you may be one that responds.
I love getting responses back from you, good or bad.
The following story is important because it's one that demonstrates to you that the contractors or consultants you MAY DECIDE to hire for a job may NOT be too smart or they may give you BAD ADVICE.
A few days ago a thermal-imaging contractor from a river town in Kentucky emailed me this:
"Your information about thermal imaging cameras shows just how little you know about the subject. Before running off at the mouth and encouraging folks to do things that are wrong, maybe you should do some research about the
subject. Evaporation is not why you can see moisture in walls and you can't see moisture or leaking air with a camera. It only reveals thermal anomalies that must be verified by other means. A thermal camera in a novice hands can be a dangerous tool."
So here's a fact for you.
Believe it or not, I do make mistakes. Three times in the past twenty years I've made one in my syndicated newspaper column.
I also make them frequently in this newsletter. That's when the Doofus Alarm goes off.
When mistakes happen, the FLOODGATES open and I'm pummeled by letters, phone calls and email about my error.
And I deserve each and every one for making the mistake.
In this case, only this gentleman has reached out. The folks that make the Seek Thermal camera I told you about two weeks ago have not said a word about what I shared in the newsletter and my column.
Why? Because my information is factual.
I went back and forth with this contractor and asked him to explain the science about the following great photo below I took of Lady the Dog that CLEARLY proves what I said is correct.
He refused to answer my question as to why Lady's nose and paws show dark in this thermal image. Moments before the
photo was taken, Lady had been outside in the wet snow so her paws were wet.
If you remember your high school physics class, you know that evaporation is a natural cooling process.
This is why our bodies perspire - to cool
us off. As the sweat or moisture leaves our skin as water vapor, it takes HEAT with it.
When was the last time you touched a dog's nose or paws? What do they feel like?
Wet and ......... COOL or COLD.
So if you have a wet spot in a wall or ceiling, the water is evaporating. In rare instances the relative humidity can be so high nothing is evaporating.
Most of the time the water is evaporating and the thermal camera will register the wet place as a cooler temperature than the adjacent areas that
are not wet.
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