You absolutely cannot use carpet underlayment underneath laminate flooring.
Can i put carpet underlay under laminate flooring.
First of all if you install carpet over laminate flooring you can always go back to laminate flooring by removing the carpet.
If your laminate flooring proves difficult to uproot or if you decide to install carpet over laminate flooring for any other reason there are a few other things you should take into consideration.
However mp global hasn t heard of any claims regarding the flooring getting damaged when using a separate underlayment with pre attached.
Installing laminate flooring over carpet underlayment will do more harm than good in the long run.
If you install any additional underlayment the base for your flooring will end up being too soft and could jeopardize the integrity of the locking system.
Some laminate flooring includes a preattached underlayment layer on the bottom of each plank.
In general the underlay for laminate flooring is between 1mm and 3mm thick while most carpet underlays are around 8mm to 10mm thick.
As much as you want to cut down costs on a new floor this is not the way to do it.
If the flooring does not have its own underlayment you must install a continuous layer of underlayment over the entire floor before installing the laminate.
In the end it s your decision if moisture protection and getting higher sound absorption is your goal.
No matter what type of laminate flooring you are installing it is always recommended to accompany it with underlay.
Manufacturers do not recommend using two layers of underlayment under laminate flooring because it can create more movement between the plank seams which could cause the planks to separate or make a squeaking sound when you walk across the floor.
This thick padding would not offer proper support to the laminated floors possibly damaging your floors.
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If not then pre attached underlayment will do it s job but at the minimum.