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Old 10-08-2009, 11:53 PM   #1
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Finding radiant floor tubes

I hope this is the right section. My daughter recently purchased a home that uses a boiler/baseboard heating and has radiant floor heating in the garage. My grandson wants to install some snow machine (snow mobiles, I call them) racks in the garage which will require some anchors drilled into the floor. I got him stopped in time before he drilled. Is there a way to locate the radiant floor tubes within the concrete floor? Thanks, David


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Old 10-09-2009, 09:33 AM   #2
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The low tech method would be to Turn down the heat to let the slab cool. Then crank up the heat back up and begin feeling the floor with your hands. As the loops warm up you will be able to feel the difference between the recently heated area and the areas where the heat has not yet spread. (using your bare feet instead of your hands is surprisingly effective too)

The better high tech method would be to get a infrared thermometer with a laser pointer sight. Pointing this at the floor would allow you to quickly mark out the tubes instead of using your hand to determine the hot vs cold areas of the floor.

Use chalk or pencil to mark the loops out as you find them.

Then you can drill in areas between the loops with much more confidence that you are not going to puncture your system.

Here is a link to an example infrared thermometer:

Yes, $40-50 is not cheap but it is a rather bargain insurance policy as fixing a punctured radiant loop embedded in concrete would cost quite a bit more.

Let us know how it goes


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