Does it Matter what Underlayment you use for Laminate Flooring?

Before you begin installing laminate flooring, make sure you select the ideal underlay for your subfloor, to get the most out of your floor while avoiding moisture issues.

Does it matter what underlayment you use for laminate flooring? Yes, the kind of underlayment you choose should be determined by the type of subfloor you choose, your own space requirements and the results you want for your flooring.

Types of underlayment

Because laminate flooring is not permanently attached to the floor, the underlayment is essential for your home’s comfort and security. There are several different kinds of underlayment.

Attached Underlayment

Nothing really needs to be done after the underlayment is installed. The laminate flooring is all set to be installed. Adding an extra layer of underlayment is not quite necessary.

Separate Underlayment

Rolls of underlayment must be purchased and installed individually if the underlayment is not attached. Foam, felt, or cork are used as underlayment.
Seaming tape or connected adhesive strips are used to attach the strips, which are normally 36 to 44 inches wide. Rolls range in length from 30 to 100 ft, with varying thicknesses.

3-in-1 underlayment

This kind of underlayment provides all three key benefits in one cushion. It protects your flooring from fumes, sound, and other damaging external factors. It goes over every sort of subfloor with ease. In addition, the 3-in-1 underlayment is thinner than the others.

What does underlayment do?

Different varieties of underlayment are created to meet specific needs and objectives. For example, underlayment installed over a concrete floor must perform slightly differently than underlayment installed over a wood subfloor.
Finally, underlayment has three purposes: it holds the floating laminate floor, shields the laminate’s bottom from moisture, and provides some temperature and sound insulation.
Footfalls on the laminate surface cause some sound to be absorbed by the underlayment. This has the added benefit of insulating your floor against chilly temperatures. Although some flooring products include underlayment, it is always necessary to make sure that your underlayment fulfills your demands in order to get the most out of your flooring.

What is the best laminate flooring underlayment?

1. Foam 

The most basic type of underlayment is foam. This sort of underlayment is available in a range of thicknesses, ranging from 3mm (1/8″) to 6mm (14″), and is often packaged in rolls of varied widths and lengths. Foam underlayment has the largest range of laminate flooring options.

A moisture/vapor barrier is included in many varieties of foam underlayment, which will not protect your laminate from flooding but will protect your subflooring. There are other foam underlayment options that include fibers and rubber to assist absorb sound.

Even for individuals who are new to installing laminate floors, foam underlayment is simple to install. Most customers like foam underlayment because it comes in huge rolls that can be cut to the exact lengths and widths they require.

2. Cork

Cork is naturally made of cork tree bark. Portugal produces the majority of the high-quality cork available. The most common thicknesses of cork underlayment are 3mm and 6mm. Cork underlayments are perfect for preventing laminate flooring damage if a moisture barrier is essential to you. Cork is also an excellent insulation material for your home. Cork underlayment provides a barrier that prevents cold and hot air from escaping through the floor, keeping both heat and cold inside.

Because cork is a natural material derived from tree bark, it is also an environmentally beneficial alternative. The tree is not damaged during the cork harvesting process, and the bark can regrow over time. Cork is also quite long-lasting, so it will not need to be changed frequently.

3. Felt

Felt is the most popular choice for underlayment and is regarded as the gold standard. This sort of underlayment is typically 3mm thick and produced from recycled fibers. When particularly in comparison to foam or cork underlayment, it is substantially heavier and easier to smooth.

Felt’s density and weight make it a great sound absorber. Felt dampens the sound of footsteps on laminate flooring the best of the three underlayments. This is the key selling factor of felt underlayment, according to most reviews and installers.

Does it matter what underlayment you use for laminate flooring?

It does matter what underlayment you use for your laminate flooring. However, let’s look at how to select the best underlayment for your flooring.


Make sure your underlayment is fit for your subfloor before making your decision.

  • Concrete Subfloor

Concrete subfloors as previously stated, require moisture control.

  • Wood Subfloor

Typically, no underlayment is required for wood subfloors. If your floor isn’t leveled or creaks a lot, however, you’ll want to invest in a cushioned underlayment with sound absorption.


It’s also essential to consider the floor. Basements and kitchens, for example, ought to have moisture control underlayment. If you’re putting laminate flooring on an upper floor, you’ll probably need a sound-absorbing underlayment to keep the noise from the upper floor from disrupting individuals on the lower floor.

Thermal Ratings

When looking for an underlayment to insulate your home, thermal ratings are necessary. Just because it purports to be insulating does not mean it is. The ability of an underlayment to insulate is determined by its R-value. The higher the R-value, the better the insulation provided by the underlayment.


When installing laminate flooring underlayment, thickness is essential. It needs to be perfect. Your floors will pull away and deform if it is too thick. The floor will be hard and noisy if the underlayment is too thin.


Underlayments are often offered by the roll or square footage, and prices vary. You can buy rolls or square feet depending on the size of your project. The cost of underlayment is determined by the number of features and the brand you choose.

Sound absorption 

Although laminate flooring is peaceful to walk on, when it bends against the subfloor, it has the potential to be noisy. Noise can be conveyed to the floor below without an underlayment. A decent underlayment will act as a sound barrier between the two surfaces, preventing unpleasant creaks and squeaks as you pass past. If you have neighbors below, you’ll want to use an underlayment with sound absorption capabilities. To avoid problems, apartments and condo complexes need an underlayment with a minimum sound rating. Sound absorption ratings for underlayments are as follows:

  • The Sound Transmission Class is a measurement of a material’s capacity to prevent airborne noises.
  • The Impact Insulation Class determines how well a material blocks impact noises such as drops, footfall, or moving furniture.

Should various types of underlay be used for different purposes?

Several factors will influence the type of underlay you select, including:

  1. The kind of carpet you’re going to lay on top 

The kind of underlay you require will be largely determined by the carpet you choose. If you choose a carpet with a smaller pile height, you may want to use a slightly thicker underlay to add depth. 

This will add extra cushioning to your carpet without sacrificing its elegance. 

Alternatively, for a truly luxurious deep pile impression underfoot, try a thicker underlay for bedrooms.

  1. The type of flooring that it will be placed on

Is your carpet going to be installed over concrete or in a space with underfloor heating? These considerations will influence the sort of underlay you select, since you’ll want one that provides adequate insulation, soundproofing, and shock absorption.

Sponge rubber or Polyurethane underlay is a good choice for harder floors since it is durable and provides a lot of insulation, especially if the floor is constructed of a cold material like concrete.

  1. Which room are you going to put it in? If at all possible, try to match the underlay to the room’s purpose. For the former, you’ll want an underlay that’s good at insulating and blocking noise, whereas the latter requires a versatile and easy-to-install underlay on rough surfaces.

Furniture will also influence your underlay selection, since you’ll want to prevent heavier things from permanently indenting the carpet.


Is Underlayment Required for Laminate Flooring?

Yes! Under your laminate flooring, you must utilize underlayment with a connected vapor barrier for the greatest results. Underlayment has various advantages, including sound absorption, insulation, and moisture protection.

Is installing underlayment necessary if my flooring already has underlayment?

The majority of contractors and specialists that work with attached pad flooring use an additional underlayment to give the necessary support, protection, and upgrades to ensure that the flooring performs and lasts as expected.


Laminate flooring is an excellent choice for homeowners who want a floor covering that is both easy to keep clean as well as durable and contemporary.

When it comes to decorating your home, the underlay you choose is equally as significant as the carpet you choose. It’s essential to know all of your unique needs and make the best selection possible, since this will benefit both you and your property in the long run.

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