Thermal Leak Detector New Toy.. Shocking Heat Loss Or Just The Norm? - Building & Construction - DIY Chatroom Home Improvement Forum

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Old 01-17-2012, 09:58 AM   #1
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Thermal leak detector new toy.. shocking heat loss or just the norm?

Spent hours going around the house with my TLD new toy. Some enlightening discoveries..

1) The heat loss on the baseboards (15 degrees F) on my walls with original house (1970s) insulation is the same as my new construction addition (2006). Mental note: focus extra attention to contractors for insulation to cover the bottom plate of a wall REALLY WELL.

2) Brand new Anderson windows still ooze heat loss. I was shocked to find out that when i aim the laser at the actual wood frame of the window the heat loss was still more than 10 degrees F. I was aiming in the middle of the window wood frame, right where the lock mechanism is so its not an installation or insulation problem. I guess the fact of the matter is, what is the R-value of a 1X1 inch piece of wood frame? not much.

3) my non-IC pot lights don't leak at all? this one was shocking. If my attic is 20 degrees, and my pot lights aren't insulated, when i aimed the laser at the lights it was only a one degree loss? how can this be? Now i want to go buy one of those smoke/fog tools to see if air is escaping up there. how can it not be? everybody knows that pot lights to the attic are the worst culprits all the time, no? Can warm air be escaping, but it not show up on the laser as heat loss? should i be in the attic aiming down at light instead of aiming up?


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Old 01-17-2012, 10:06 AM   #2
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Where the lights on when you did your check?


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Old 01-17-2012, 11:32 AM   #3
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c'mon now.. of course not.. they were off for hours..
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Old 01-17-2012, 01:13 PM   #4
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under the baseboards is notorious for heat loss. It goes under the baseboard and through the wall out where the sheathing meets the studs, top & bottom plates. They would have to be sealed at all joints. There are other remedies too.
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