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Old 06-09-2008, 01:37 PM   #1
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Radiant Floor heating in Basement?


Hello.

I'm wanting to install radiant floor heating on top of my basement slab that is already poured. This will only be used to warm up the floor for your feet and not heat the room. House built last year, unfinished basement.

What is the best/cheapest way to accomplish this retrofit? I don't think I want to pour an additional conc. topping.

What I original though of doing was fastening the IPEX tubing onto the existing concrete floor, installing 1x4 nailers to the concrete than adding sand over the pipe. After this I would install 1/2" plywood over the entire surface then my laminate flooring on top.

Problem areas:

1. I live in a REALLY COLD climate area. Freeze/thaw cycles are very common and frequent. My existing conc. slab is already showing signs of cracking and heaving. (this is typical in my area and it cant be fixed/resolved)

2. I will have a step down area in my utilities room as I wont be adding floor thickenss under the already installed furnace/HW tank ect.

Last edited by mfleming; 06-09-2008 at 01:57 PM. Reason: Update
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Old 06-09-2008, 04:47 PM   #2
Electric Radiant Heating
 
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Radiant Floor heating in Basement?


You could use a low voltage radiant product directly on the concrete with your laminate floating on top. No worries about the concrete cracking. Look on the net for a product called Zmesh.
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Old 06-10-2008, 08:13 AM   #3
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Radiant Floor heating in Basement?


I researched elect. floor heating but it seemed people have more problems with this setup do to shorts and if I ever get water in my basement it'll be a HOT zone. Also the higher electricity bill compared to water heat to 220v wiring is more.
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Old 06-10-2008, 08:22 AM   #4
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Radiant Floor heating in Basement?


Again, look into Zmesh. It is low voltage technology that will not give you the "shorts" issue you mentioned that line voltage cables will have.

We installed it in an unfinished basement here in NY under carpet and padding. The homeowner had a full flood the first winter into it. The system control sensed the element length as being "shorter" than what was programed in on set up and immediately shut itself down. The system will test itself every 29 minutes to see if it can reactivate. When the flood dispersed, the system reactivated itself. The homeowner called me saying "there's fog in my basement!" I told them to open the windows so the evaporating water could get out. They called me 3 days later with no damage to any part of the carpeting except where the dirt from the french drain came up in the flood.

You mentioned that you were using tile!!
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