[wdfifteen]

Originally Posted by cstreit

Hey all,

I'm installing a new floating laminate floor in our sunroom. Its a concrete slab. Along with it I will be doing electric floor warmers so naturally due to the warmers and concrete there is a vapor/insulating barrier on the floor first.

So my question is - the floors we like have a 2mil attached pad preinstalled on them. Is it okay to have the underlayment and then install a floor with an additional underlayment? (4mm total)

I would talk to the manufacturer of the laminate. Laminates aren't all the same with regard to adhesives, etc.