We are thinking of putting electric radiant heat under laminate on our first floor (concrete slab). I am currently looking at QuietWarmth by ThermoSoft. They seem preferable to some other brands to me because the wire is in the padding (ie I wouldn't need both padding and heating layers) and because they offer quantity discounts (we will be doing about 300 sf). Has anyone used this? Does anyone have any recommendations/suggestions/warnings about this product or about electric radiant heating and/or laminate flooring in general? We will be doing this ourselves, though we will hire an electrician to put the gang boxes in.
No matter which brand or type of electric radiant heat you choose, make sure the company that manufactures the flooring will warranty their flooring with radiant heat. Most do now days, but there are some who dont, due to the fact that the adhesives used in the manufacturing process will not stay strong with prolonged elevated temps.