Question by sahina: Could i use plywood as a substitute to insulation bored in underfloor heating tiles?
i am going to install underfloor electric heating to my concrete floor. i was wondering if instead of using insulation boards can i use plywood. i am going to put floor tiles over the electric mat.
Best answer:
Answer by rick
I am not familiar with what you are trying t do here, but insulation board will do just that, insulate. Plywood offers very little insulation value in comparison. The plywood, i would think would be more expensive(at least where i’m from). Why are you substituting?
What do you think? Answer below!
2 Comments
Plywood will not work. The foam board you’ll have to use is at least 2″ thick and rated at a minimum of 25 lbs per square foot. It needs to be rated at 25 lbs to keep from compressing under the weight of the concrete. This will give an R value of 10. The only other product that can be used is called double bubble insulation which is rolled out before the concrete is poured. This will work but is more costly.
no i don’t think so