Is underlayment necessary?

Author: Rocky Wilderman Sr.  |  Last update: Sunday, January 4, 2026

Underlayment does two things that are critical to a successful laminate flooring installation:1. Underlayment takes out any minor deviations in the subfloor. 2. Underlayment delivers superior acoustical performance.

What happens if you don't use underlayment?

Separate Underlayment. Laminate flooring manufacturers typically recommend an underlayment. What happens if you don't put padding under laminate flooring is moisture coming through the subfloor can cause it to warp and mildew. And footsteps on the floor will be louder.

Do you really need underlayment?

In most cases, underlayment offers multiple benefits such as added comfort, sound reduction, and moisture protection. While some flooring types like tile or engineered hardwood might not always require it, underlayment is often a good investment to ensure the best performance and longevity of your floors.

What flooring does not require underlayment?

Underlayment Not Required - Laminate Wood Flooring - The Home Depot.

Does all vinyl flooring need underlayment?

Underlayment is not required if the vinyl flooring will be laid over a cushion-backed vinyl floor or a tile floor below grade. In all other applications, however, you should use one, such as covering existing hardwood floors, vinyl flooring without cushion, and concrete floors.

Do I Need An Underlayment For My LVP Flooring?

How do I know if I need underlayment for vinyl flooring?

If you're laying the LVP over an existing cushion-backed vinyl floor or a below-grade tile floor, you won't need to use an underlayment. However, you'll want to use one in every other application, including covering existing hardwood floors, uncushioned vinyl flooring, and concrete floors.

Can you put vinyl flooring directly on subfloor?

Generally speaking, LVP can be installed directly over subfloors such as concrete or ceramic tile assuming they're clean and level. Additional underlayment may be required if installing over existing hardwood or vinyl sheet floors to protect against moisture damage and sound transmission.

Does floating floor need underlayment?

The answer will vary depending on the material used for the floor and the way that the boards are constructed, but, as a general rule, both Laminate and Engineered Timber floating floors do need some form of underlay to have optimal functionality and longevity.

Is a moisture barrier necessary for vinyl flooring?

A plastic moisture barrier acts as a shield, preventing moisture from reaching the vinyl flooring above. This protection is especially crucial in areas prone to dampness, such as basements, bathrooms, and kitchens.? Preservation of Subfloor Integrity: The subfloor serves as the foundation for your vinyl flooring.

Can you lay laminate over vinyl without underlay?

For glue down vinyl, as long as the existing flooring is sturdy and in good condition, you can install laminate flooring on top. However, if there are any signs of peeling, gaps, or damage, it should not be used as a subfloor. An underlayment will still be needed over a glue down vinyl subfloor.

Do you need underlayment if flooring has attached pads?

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.

What is the best floor underlayment?

These four include:
  • Foam. Foam underlayment is very budget-friendly. The thicker the foam, the better the results. ...
  • Felt. Felt underlayment protects your floor from water damage. ...
  • Cork. Cork is naturally resistant to moisture. ...
  • Rubber. Rubber is a strong material that many prefer for underlayment.

Does the Stainmaster LVP need underlayment?

All Stainmaster luxury vinyl needs underlayment, which isn't a big deal: most floors do. That said, Stainmaster is super picky about the kind of underlayment you use.

Do you always need underlay?

In short, yes! We always recommend that you install underlay under your carpet. It has a multitude of benefits including improving the look and feel of your carpet, increased comfort levels, reducing noise, increasing energy efficiency and improving the lifespan of your carpet.

Can you have too much underlayment?

More is not always better, and with underlayment, too much can compromise the integrity of your floor's locking system. Adding additional underlayment under vinyl with an attached pad can create too much cushioning, which causes the floor to come apart through use over time.

Should I put anything in between the subfloor and underlayment?

Very often, particularly in a below-grade installation on a concrete basement floor, a vapor barrier is recommended in addition to the underlayment. That vapor barrier would go between the subfloor and the underlayment.

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

When you have a bump or dip in your subfloor, the uneven surface can cause vinyl planks click-lock-systems to become uneven. This will cause creaking or “popping” every time you walk over the floor. An underlayment can help fill in subfloor imperfections and leave your flooring a smooth surface to lay on.

Is underlayment the same as a vapor barrier?

Materials and Installation: Underlayment materials vary based on flooring type and performance needs, whereas vapor barriers are typically constructed from moisture-resistant materials like polyethylene or specialized membranes.

Does luxury vinyl plank need underlayment?

If your home's subfloor is made of concrete, you will absolutely need an underlayment if installing luxury vinyl plank flooring. While concrete is an exceptionally durable construction material, it has a few inherent properties that don't play nicely with the flooring of your home.

Can you skip underlayment?

Underlayment is necessary to provide a moisture protection, sound insulation, and a smoother surface for the laminate. Installing laminate directly on the subfloor can lead to noise issues, discomfort, and potential damage from moisture.

What type of flooring requires underlayment?

Virtually any type of surface flooring you choose, excluding some types of vinyl flooring, requires an underlayment but the type, material, and purpose will vary with each type of flooring material.

What are the cons of a floating floor?

On the downside, however, floating floors are prone to faster wear than its counterpart. Floating floors generally incorporate thinner materials that cannot be sanded — often leading to a shorter lifespan.

What is quiet walk underlayment?

Description Features & Benefits Technical Features. QuietWalk LV (Luxury Vinyl) is a recycled fiber underlayment that provides excellent support to your flooring. Its dense construction makes it a universal underlayment, suitable for use under many types of floors with a variety of installation methods.

What goes between subfloor and vinyl flooring?

In essence, underlayment is a layer of material sandwiched between your subfloor and your finished flooring.

Is felt or foam backed vinyl better?

Choosing between felt or foam-backed vinyl flooring ultimately comes down to personal preferences, alongside the specific needs of the space where it will be installed. Felt-backed vinyl offers an enhanced underfoot experience that's warm, comfortable, and forgiving of minor subfloor irregularities.

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