What underlayment for laminate flooring on plywood?

Author: Arne Wehner  |  Last update: Sunday, September 24, 2023

The four most common types of laminate flooring underlay materials include: basic foam, combination style, felt, and cork. Basic foam underlayment is ideal for plywood subfloors. It is usually made of polyethylene or polypropylene. Polypropylene does not have a vapor barrier, making it ideal for plywood subfloors.

What is the best underlayment for laminate flooring on plywood subfloor?

While there are a number of good options in the market, cork and foam are the usual favorites for a laminate floor underlay. Depending on your lifestyle, you may appreciate cork for its thickness and sound absorption; foam, on the other hand, is an excellent, cost-efficient material that works as a moisture barrier.

Do you need underlayment for laminate flooring on plywood?

Underlayment for laminate flooring is a must. Since laminate is a floating floor, it must be evenly distributed across your subfloor. Underlayment is what allows the floor to float, gives it stability, support, noise reduction, and supports the locking systems in between planks to assure the sturdiest flooring project.

Can you put laminate flooring directly on plywood?

Laminate floors can be installed directly over concrete, plywood, OSB, parquet, vinyl and tile. The underlayment must be applied to the original flooring surface first, and then the floating floor can be installed.

What is the best underlay for laminate flooring on wooden floor?

Nätura foam underlay is ideal for use with laminate flooring or wood flooring. The 2mm thickness P.E poly foam underlay offers some sound reduction and thermal insulation, but doesn't come with a DPM. This underlay is ideally used over wood or chipboard subfloors.

Choosing the Best Underlay For Laminate & Wood Flooring

Do I need a moisture barrier under laminate on wood subfloor?

No matter which underlayment you choose, if you are installing on a moisture prone subfloor or concrete subfloor, you really need a moisture barrier underlayment. Protect your laminate flooring from moisture for years to come by installing moisture barrier underlayment.

Do I need underlayment for laminate flooring on wood subfloor?

Do I need underlayment for laminate over hardwood. The answer is yes. However, pre-existing hardwood floors should be in good condition before installing laminate at all. Older hardwood floors (40 – 50 years old) planks may be in poor condition.

How do you prepare plywood for laminate flooring?

Your subfloor must be:
  1. Level within 3/16 inch for every 10 feet. Grout lines must be filled in if using tile as a subfloor. ...
  2. Flat.
  3. Cleaned. All dust and debris should be swept.
  4. Structurally sound. Clear of any nails, loose screws that squeak or are damaged, or any parts that were damaged by moisture.
  5. Dry.

How thick should plywood be under laminate flooring?

Some experts suggest that 15/32-inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less, but you should use slightly thicker 3/4-inch plywood for joists spaced further apart. However, check with your local code authorities for the official recommendations.

What thickness underlay is best for laminate flooring?

We would recommend an underlay of 3 – 5mm for laminate flooring. It should be at least 3mm thick to provide comfort and ground levelling properties. But, it should be no more than 5mm thick. If it's any thicker, you could experience problems with the laminate's locking system.

Do I need a vapor barrier over plywood?

Your plywood would most likely be on a sleeper system (floating wood planks on concrete). Having a vapor barrier below the sleepers is ideal as moisture will not get to the plywood. Regarding on-grade applications, if their is a basement underneath, then you will not need a vapor barrier on top of the plywood.

What happens if you don t put underlayment under laminate flooring?

Without underlayment to add a layer between these damp subfloors and the surface flooring, your laminate can quickly become wet, warped, and mildewy, harming its overall integrity. Moisture over time can also break down floor adhesive which causes the floor to start warping.

What is best flooring over plywood subfloor?

Hardwood has been a flooring option for thousands of years. It works well over any type of wood subfloor more than 1/2 an inch thick. If squeaky floors are an issue, some construction adhesive will keep everything nice and quiet. Laminate floors can be installed over any wooden subfloor as long as it's in good repair.

Does laminate flooring with attached padding still need underlayment?

Despite these enhancements, there is a common misconception that an attached pad replaces the need for a traditional flooring underlayment. You may save time shopping and installing your floor if you skip the underlayment, but you will not achieve the optimal performance and longevity for your floor.

Does plywood floor need expansion gap?

APA recommends a 1/8-inch space between panel edge and end joints. Plywood and oriented strand board (OSB), like all wood products, will expand or shrink slightly with changes in moisture content. If the wood structural panels are tightly butted, there is no room for expansion and buckling can occur.

Does thickness of underlayment matter?

We'd like to get one thing clear from the start – underlay thickness does matter. Getting it right can make a huge difference to the final look and feel of your new flooring, having a significant impact on its underfoot comfort, sound and heat insulation, and longevity.

How much gap do I leave when laying laminate flooring?

When laying laminate flooring it is essential that you leave at least a 10-12mm expansion gap around the perimeter of the floor. There are important reasons to do so, and we will cover them in this article.

What goes between plywood and flooring?

Underlayment is a special grade of APA plywood that is attached on top of the subfloor to provide a durable and resistant layer under finish flooring. Underlayment's special face and inner-ply construction resist dents and punctures from concentrated loads.

Can you use self leveling on plywood?

If you're remodeling a home or business and want to upgrade to an elegant, polished concrete floor, it's probably easier and more affordable than you think. If you've got a plywood subfloor, like many buildings do, you can leave it in place and apply self-leveling concrete directly on top of it.

What do you put down before laminate flooring?

Laminate underlayment is a soft pad that is installed under laminate flooring. The underlayment helps the laminate planks lay smoother, connect better, and for the flooring to feel slightly softer underfoot.

Do I need a vapor barrier over wood subfloor?

Should I use a vapor barrier on a wood sub-floor when installing vinyl plank flooring? We get this question a lot! It is not required, but we recommend using the Visqueen Vapor Barrier with all vinyl plank flooring installations.

How do I choose an underlay?

As a rule, carpet underlay needs to be soft and comfortable to walk across to help cushion your steps, whereas hardwood flooring underlay, such as for wood floor underlay, tends to serve as a moisture barrier. Some flooring materials, like vinyl, may not even need underlay at all.

Can I put flooring directly on subfloor?

It is very important to have a debris free and level subfloor for a glue down vinyl flooring installation! If you're installing a loose lay vinyl plank floor, you will not need an underlayment. This material can be installed directly on top of the subfloor without any additional padding.

What happens if there is no vapor barrier under slab?

Water vapor can penetrate through the concrete subfloor and damage the main floor of builds, causing deterioration of flooring adhesive; bumps, ridges, or bubbles under flooring, color changes due to fading, mold, mildew, bacteria growth; peaking, curling, or warping of flooring; or efflorescence, also known as the ...

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