Do you need underlay with solid wood flooring?

Author: Jordyn Ortiz  |  Last update: Sunday, April 5, 2026

It is beneficial to install hardwood floors with an underlayment. Despite the slight increase in cost and time, the added protection will benefit your floor long-term by reducing moisture. Additionally, increasing noise and evening out minor subfloor flaws without requiring substantial rework.

Is underlayment necessary for solid hardwood floors?

Even so, underlayment can only improve the overall quality of your floor—offering added stability, noise reduction, moisture protection, and comfort. So, while it might not be strictly necessary, we recommend using it if your budget allows.

Do you need underlay for solid wood?

Underlays are useful for stability, insulation, sound reduction, and moisture protection. Underlay is commonly used for floating wood floors. Fixed floors do not usually incorporate an underlay as they are fixed directly to the subfloor.

What goes under a solid wood floor?

A suitable underlayment for hardwood floors on concrete is a moisture barrier underlayment made of foam or rubber. It helps protect the wood from moisture damage and enhances soundproofing. Some options combine cushioning and vapor barrier properties. For specific product suggestions, visit my Quora Profile!

What is the best underlayment for solid hardwood floors?

Felt is used as underlayment for hardwood floors. It forms a hard surface without making the planks wet, which can cause them to warp. Cork is also a good choice, as it resists moisture and supports heavy loads on wood. The kitchen or other damp areas, are perfect places to use cork in.

Choosing the Best Underlay For Laminate & Wood Flooring

What flooring does not require underlayment?

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

What is the best subfloor for solid hardwood floors?

Chipboard or Plywood Floors:

Chipboard and plywood are suitable subfloors for wood flooring providing they are of sufficient thickness to support the floor and are of good quality.

What is the best underlay for solid wood flooring?

If you're wondering what's the best underlay for laminate or wood flooring, Fibreboard is a brilliant choice. It helps smooth uneven floors, reduces noise and acts as an excellent thermal insulator. Not to mention, it's also the number one choice of underlay for laminate and wooden floors.

How do you prepare for solid wood flooring?

Preparation & Expansion. Remove all existing underlay and floor coverings to ensure that you have a strong and level base for installation. As there is expansion required for solid wood flooring, a gap will be required around the perimeter of your installation. The correct expansion gap for wood flooring is 10-12mm.

Does hardwood go directly on the subfloor?

wood subfloor. Most engineered flooring can be installed using staples, full spread adhesive or a floating method over an approved subfloor. Make sure you have a sturdy subfloor: 3/4-inch CDX plywood is preferred and 3/4-inch OSB is acceptable.

Does all flooring need underlay?

Flooring underlayment is not always necessary, primarily when you are using a flooring that has its own underlayment padding such as . But underlayment can help with a wide variety of issues, such as sound control in a cement floor application or cold floors in a basement for example.

Can you install solid hardwood below grade?

Solid parquet should not be installed below grade. The entire flooring level is considered to be below grade where soil is present along any perimeter wall and is more than 3″ above the installed wood flooring level. A vapor retarder is always required over the concrete slab and below the subflooring material.

Should you put plastic under hardwood floors?

Yes. Hardwood flooring is quite sensitive to moisture and it's always worth adding a moisture barrier during installation. It is a necessity with concrete subfloors and damp areas, but water-resistive underlayments should be considered with other subfloors as well.

Can you lay wood floor without underlay?

Wood floors are perfectly comfortable to walk on without the need for extra padding underneath, and the subfloor will have to be made even before installation – so underlay isn't required there.

What happens if you don't use underlayment with 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.

Are solid hardwood floors worth it?

Additionally, because they are so durable, hardwood floors can last for generations. This long-lasting quality makes them a cost-effective flooring option. It may be a little more upfront, but in the end, it will save you money.

Does solid hardwood need underlayment?

When it comes to new flooring installation, it pays to invest in a quality underlayment for your hardwood floors. Wood is a beautiful product, but it requires extra support to provide the best outcome for residents of homes, apartments, office buildings, and more.

How long does solid wood flooring need to acclimate?

To acclimate effectively, the planks should be unpacked from their boxes and stacked to allow air circulation on all sides. If the moisture content of the subfloor and new planks are within 2 percent right off the bat, we still recommend 48 hours for the floor to get comfortable in its new environment.

How many times can a solid hardwood floor be sanded?

Solid boards that have a 1/4- to 5/16-inch covering over the nails and a 3/4-inch-thick body can sustain, on average, up to 10 minor sanding jobs that mostly affect the finish or four major reworks that remove more substantial amounts of material.

Do I need underlayment on a wood subfloor?

Moisture and wood don't mix, and it can cause mold, cracking, and warping of the wood. With an underlayment installed, that concern is eased. Cork and foam underlayments help wick moisture away from your hardwood floor. Moisture often sneaks in from underneath the floor.

Is foam underlay any good?

Enhanced comfort

One of the primary reasons homeowners opt for PU foam underlay is the unrivalled sense of comfort it provides. Its natural cushioning effect means it feels soft and plush underfoot, helping transform any room into a cosy and welcoming space.

How thick should solid hardwood floors be?

Typically, solid hardwood flooring is between 5/16 and ¾ inches thick. Those are pretty standard thicknesses that serve most needs. Engineered hardwood can come in different thicknesses but generally, it's about the same offerings as solid hardwood.

Do you need rosin paper under a hardwood floor?

Felt and red rosin paper are both often used as moisture barriers when installing hardwood floors. While each of them do have an intended purpose, they are not the best suited products for hardwood floors. Red rosin in particular actually traps and holds moisture.

What is the difference between hardwood and solid wood flooring?

Though both are made from 100% real wood, the major difference between hardwood and engineered wood is their composition. While hardwood flooring is constructed from solid wood with no layers, engineered wood flooring is made with layers of plywood and solid wood.

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.

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