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Flooring Over Heated Concrete Below Grade

 
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Old 07-12-2015, 10:06 PM   #1
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Flooring Over Heated Concrete Below Grade


Newbie here.

Getting ready to choose flooring for my basement. It's a new slab and will be used for a preschool. Wife doesn't like tile so that is out. Was figuring on some snap together of some sort.

I want something that can stand the heat and not hold the heat down.
Willing to hear any and all opinions. Thanks

Last edited by Jams; 07-12-2015 at 10:11 PM. Reason: Forgot something
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Old 07-13-2015, 04:19 AM   #2
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Re: Flooring Over Heated Concrete Below Grade


look at a concrete stain just did one and used elite crete it looked cool.

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Old 07-13-2015, 06:00 AM   #3
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Re: Flooring Over Heated Concrete Below Grade


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Originally Posted by Jams View Post
not hold the heat down.
You need something with hi thermal conductivity and low thermal resistance, per inch of thickness.

Whatever the conductivity of paint or stain, the thickness is so small (0.004") that the effective conductivity is very high.
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Old 07-13-2015, 07:01 PM   #4
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Re: Flooring Over Heated Concrete Below Grade


Tile is a no brainer over radiant. Otherwise as stated already dye he concrete. They also make some trowel on finishes that look pretty good but don't think they will hold up to preschool use that great.
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Old 07-13-2015, 07:38 PM   #5
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Re: Flooring Over Heated Concrete Below Grade


Pre-school?

You're going to want COMMERCIAL carpet or carpet tiles. The problem with carpet tiles would be the backings vary a lot and some would certainly FREAK OUT and fail if your slab is doing weird extremes of warm and cold. Normally I HATE......hate HATE carpet but this is one of those exceptions. I would look into Tredmore pad and do what we call a "double stick" install. I like to use commercial tack strip around these installs but it's not 100% necessary.
http://www.commercial-carpetcushion.com/tredmor.html

By all means consult with the carpet manufacturer as well as technical reps for the Tredmor pad to ensure your specific conditions meet their standards.
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Old 07-13-2015, 11:49 PM   #6
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Re: Flooring Over Heated Concrete Below Grade


Tile or concrete in a preschool seems like a bad choice.
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Old 07-13-2015, 11:54 PM   #7
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Re: Flooring Over Heated Concrete Below Grade


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Tile or concrete in a preschool seems like a bad choice.
Actually an excellent choice...

Them little snot nosed goobers have all kind of accidents all day long.

Tile or concrete is very easy to clean up and sanitize.

Area rugs are used for floor time.
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Old 07-14-2015, 07:18 AM   #8
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Re: Flooring Over Heated Concrete Below Grade


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Actually an excellent choice...

Them little snot nosed goobers have all kind of accidents all day long.

Tile or concrete is very easy to clean up and sanitize.

Area rugs are used for floor time.
****************************************
Public pre-schools/Kindergarten classrooms invariably get carpet on at least half the room. This week we're doing an elementary school and in the Kindergarten class they want us to demo all the carpet and a large section of ceramic tile. There will be a 5' row of VCT along the back by the sink, counter and entry and the rest is C&A direct glue down.

I was so surprised they wanted to burst out the tile I had the school call the District head guy to make sure that's what they want. Nothing wrong with the existing tile and we're going to demo it down and put VCT? That's just crazy but, YUP that's what we're gonna do.
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Old 07-14-2015, 07:19 AM   #9
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Re: Flooring Over Heated Concrete Below Grade


If the daycare center is to be licensed--or might be,someday---
Check with the local heath department for any floor covering restrictions-----

It would be a shame to spent time and money only to have to rip it out because it will not meet code.

Griz is spot on---the ability to wash and sanitize is critical----
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Old 07-14-2015, 08:58 AM   #10
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Re: Flooring Over Heated Concrete Below Grade


the smaller groves and cracks of VCT is actually more sanitary than tile. During the cleaning/polishing, the cracks get filled, making it very easy to clean and polish. Its also drop resistant from chips and cracks. Tile has grout, and grout allows liquids to permeate, unless its sealed. Thats an on going thing. Grout is also "lower" in height than the tile, which can collect liquid, and allow a slower dry time.

I don't think I've seen a hospital that uses anything other than VCT in patient care areas.
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Old 07-14-2015, 02:51 PM   #11
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Re: Flooring Over Heated Concrete Below Grade


If the thermal resistance above the embedded heating element equals the resistance of the concrete below, half the heat will benefit the occupants.
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Old 07-14-2015, 07:55 PM   #12
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Re: Flooring Over Heated Concrete Below Grade


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the smaller groves and cracks of VCT is actually more sanitary than tile. During the cleaning/polishing, the cracks get filled, making it very easy to clean and polish. Its also drop resistant from chips and cracks. Tile has grout, and grout allows liquids to permeate, unless its sealed. Thats an on going thing. Grout is also "lower" in height than the tile, which can collect liquid, and allow a slower dry time.

I don't think I've seen a hospital that uses anything other than VCT in patient care areas.
*********************************
REAL hospitals use sheet goods----HEAT WELDED and 6" coved up the walls. We put VCT in some exam rooms where the spilling of blood and other chemicals is significantly minimal in comparison to serious surgical procedures.

If I was to recommend ANY kind of resilient in K-6 (elementary school) without a doubt I would demand it be coved up the walls 6" and heat welded.

VCT is..............good enough for Walmart and trailer parks.
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Old 07-15-2015, 07:55 AM   #13
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Re: Flooring Over Heated Concrete Below Grade


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*********************************
REAL hospitals use sheet goods----HEAT WELDED and 6" coved up the walls. We put VCT in some exam rooms where the spilling of blood and other chemicals is significantly minimal in comparison to serious surgical procedures.

If I was to recommend ANY kind of resilient in K-6 (elementary school) without a doubt I would demand it be coved up the walls 6" and heat welded.

VCT is..............good enough for Walmart and trailer parks.
Spoken like a real resilient mechanic I'm actually amazed vct still exists. The life costs/sft are astronomical compared to damned near anything else if the floor is maintained to any kind of standard. It's one of the most unforgiving floors prep wise ( again, if done right). Of course color and pattern combinations are limited only by imagination but I rarely see that as a reason for use. Cheap initial cost is about it.
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Old 10-20-2015, 10:34 AM   #14
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Re: Flooring Over Heated Concrete Below Grade


There are a number of ways to add radiant heating to the concrete substrate. You can either put the heating coils in as you pour the concrete, or sandwich the heating coils between the concrete and a layer of plywood subflooring. Engineered wood planks are a good choice to install over radiant heated concrete because they have the ability to expand and contract with temperature changes. This type of flooring, with its tongue-and-groove construction, clicks together quickly to create a floating floor that isn’t attached to the concrete subfloor.

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