Foam underlay is known as the most basic variety of underlayment. Although it comes at such a low price, foam underlayment still offers plenty of sound reduction.
Foam underlay is specifically designed to be used with laminate floors. Read further about all the benefits of a foam underlay.
Underlay is the layer of material directly beneath your floor covering. If you were to tear up the flooring in your home, you would likely find many layers. When you removed the floor covering, also called the finish floor, you’d expose the underlay.
1) It protects your sub floor which can be concrete but it usually marble or ceramic tiles. Using a foam underlay will not only protect the floor it is laid on, it also protects your new laminate floor from contracting any moisture that forms on the sub floor due to temperature changes.
2) Get only a slight sound absorption to reduce impact and click noises.
3) Use foam underlay to smooth out the undulations in your floor of up to 3mm