Frequently Asked Questions About Laminate Flooring: Moisture Resistance & More

We’ve taken the most frequently asked questions from our customers relating to moisture resistance and compiled a list of 4 top questions regarding this important issue.

1. I’m looking to lay laminate in a laundry room & mud hall. Will water be an issue?

Some laminate flooring, like Armstrong and Alloc Commercial brands, has a moisture resistant core and wax edges to protect moisture from ruining your floors. However, if you are expecting a lot of moisture, consider vinyl plank flooring. Vinyl plank floors have the beautiful look of wood, and are 100% moisture resistant because they are made from vinyl or pvc, both plastic-like materials.

Traditional Laundry Room by Guilford Architects & Building Designers CK Architects
Traditional Laundry Room by Guilford Architects & Building Designers CK Architects

2. Would it be okay to use a laminate flooring in the bathroom without a moisture resistant core?

Again, some laminate flooring is more moisture resistant than others. If you expect a lot of moisture in your bathroom, such as little kids who love to make waves in the bathtub, opt for vinyl plank flooring. This way you will be able to enjoy the look, without the possibility of ruining your new bathroom floor the first time your toddler successfully makes a tidal wave that escapes the confines of the bathtub.

3. Can you use double underlayment or extra underlayment under a floor that already comes with the pad attached?

Never use double underlayment. This also goes for adding more padded underlayment underneath a floor with pre-attached underlayment. Laminate flooring is a floating floor, and the underlayment is designed to give the floor enough support and cushion. Any additional underlayment may cause your floor to be unstable and buckle. This will void your warranty. If you are looking for additional sound reduction or moisture resistance, opt for a higher quality underlayment.

Floor Muffler Ultraseal 2mm Underlayment
Floor Muffler Ultraseal 2mm Underlayment

4. Is the underlayment that comes pre-attached as thick as underlayment sold seperately?

Most laminate underlayment is between 2-3mm. When underlayment is pre-attached on a floor, it is typically selected by the manufacturer and deemed a good match for the specific flooring. If you are looking for superior noise reduction or moisture resistance, opt for a laminate without pre-attached underlayment. Instead, select an underlayment that has all the features you are looking for and install it separately.

Have a burning question we haven’t answered? Write it in the comments below, chat with us on our website, or call us at 1-800-520-0961!

More Frequently Asked Questions

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  1. Alana Kane

    Hi Victoria, I am not familiar with what a microwave shield, but it sounds like this would not be a suitable subfloor to install laminate flooring over. You will need a solid plywood or cement subfloor with laminate specific underlayment.

  2. Avatar
    Victoria Steele

    Question connected with number 3 above: I live in a rented apartment. I am adding microwave shielding over the walls and floor. I intend to have a floating laminate floor over the shielding. The shielding will be two layers of carbon absorber with one layer of thick foil, grounded, in between. There will be heavy paper or card stock on the top and the bottom for protection. I assume the floor is vinyl over concrete. Should I use or not use underlayment?

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