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Carpeting with glue -radiant heating

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Joined: Nov 6 2005

Installing carpet over linoleum and told to use glue and not nails due to the radiant heating. Is there a problem when the carpet is replaced in future because of the glue and is the glue applied under the padding and also under the carpet? Thanks in advance Angela

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Joined: Feb 8 2005

Why is it that nobody does research anymore?
Carpet is terrible for radiant heat, glue or no glue.
the previous owners of our house carpeted half the house, which also happens to be the half where you cannot feet the heat at all.
on teh other hand, our kitchen and living room are bare concrete, and it is super toasty in those rooms.
You are better off ripping out all the carpet and replacing it with cork, or just leaving the slab with a throw rug here and there.

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Joined: Mar 25 2003

Carpet is horrible for radiant heat and your heating bills will show it. If you must have carpet, go with a thin commercial grade carpet. These are designed to be glued down and they don't use a pad. I imagine you'll need to make sure the glue can be used with radiant since you don't want it melting or burning.

Joined: Mar 2 2004

Radiant heat uses fairly mild temperatures. If you know what you are doing, you can feel the boiler out-put to the system where it enters the slab. This is fairly warm compared to the cooler 'return' pipe. Most things you put on top of the slab will slow the heat radiating. This means the slab stays a little warmer than the places in the house where it radiates warmth better. I don't think this costs you much, if anything extra. The warmer slab eventually loses its heat to the house.

In my Eichler, the living room had thick carpet with the wrong kind of pad. This was on top of the original cork flooring. The room did not seem cooler than the rest of the house. The carpet was certainly cooler than the adjoining kitchen floor, which was linoleum.

Here's the interesting part. Some Eichler owners have faithfully installed cork flooring in their homes. Nobody has mentioned being dissatisfied with the heat transfering of the cork floor. Cork has the same heat transferring ability, R-Value, as polystyrene. 3.57. This is a very good insulator. Who hasn't held a white polystyrene cup filled with very hot liquid? 3.57 is more than three times a better insulator than wood and half as good as polyurethane, which is the best insulator. Granted, a cork floor is particles stuck together. This must make it less than R -3. You can draw your own conclusions about putting carpet, or worse....cork over an Eichler slab. I don't think it's such a big deal.

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Joined: Oct 10 2003

dommi's right. you should stop what you're doing, and immediately sink all of your money into ripping out all of the carpet. quit work now. tear out carpet.

seriously tho. if you've decided on carpet, it will affect the efficiency of the radiant heat, but our house is carpeted too, so dont worry you will not be looked down upon.

I think tborsellino's right about what that glue may be about, I dont know otherwise.

our eichler was carpeted throughout (hear dommi99 upchucking right now) as part of the prep for sale by the previous owner's estate. Wouldnt have been my first choice, but hey, what can you do? :wink:

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