Some types of underlayment reduce sound transmitted and keep moisture from wicking into your laminate.Most flooring systems do not require glue; the planks just snap together.
Underlayment is used to absorb minor imperfections in the sub-floor, to deaden the noise when walking on the floor and reduce overhead sound in rooms below.
Lay down the underlayment - Select an underlayment based on the recommendations of the manufacturer of the flooring material you are using.
To know how much flooring and underlayment to order, measure the square footage of the room or area where you plan to install the floor.
If you don't have a waterproof underlayment, like sheet vinyl, you may want to consider adding an impermeable membrane or sealer.
When installing laminate flooring in your home, check the manufacturer's recommendations and use underlayment they approve.
Once your floor is clean and leveled and you've trimmed the door jambs, etc. it's time to roll out the underlayment pad.
This underlayment should be measured for a tight fit from wall to wall, without any excess cracks and crevices.
Once you roll out your underlayment pad, connect the pieces with wide, clear, plastic tape.
You will also need to purchase a padded underlayment; this helps the flooring float freely.