Is it worth getting underlay?

Author: Mrs. Lydia Wuckert Sr.  |  Last update: Thursday, December 4, 2025

Good quality underlay will prevent premature wearing and keep your floor looking new for longer. As the underlay acts as a shock absorber, your flooring or carpet will sit better and take more wear. The best type of carpet underlay will reduce your energy bills as it will keep the heat in your room.

Do you really 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.

Is it worth paying more for underlay?

It's worth paying for good underlay. The carpet feels much softer underfoot, you get better sound and heat insulation and most importantly the carpet will last much longer. A carpet without underlay (unless a very cheap carpet with its own bonded rubber/felt backing) is a waste of money.

Is underlayment worth it?

A good underlayment can lessen impact noise from shifting furniture, dropped objects, and footfalls. A TV in the room above you is one source of airborne noise that can be reduced using underlayment. Overall, it contributes to a quieter, more tranquil home.

What happens if you don't use underlay?

It smooths out the subfloor

If you have areas in your subfloor that are bumpy, uneven or rough, laying carpet directly on it will lead to uneven wear and significantly shorten its lifespan. By installing underlay first you negate a lot of these imperfections, keeping your carpet looking its best for longer.

Getting Technical: Choosing Underlay

Should I use underlay with vinyl flooring?

Vinyl – the only flooring that doesn't require underlay

Due to its in-built cushioning, vinyl is capable of providing sufficient levels of thermal and sound insulation all on its own.

What type of carpet does not need underlay?

Designed to be soft and comfortable underfoot, felt back carpets have the added advantage of being able to be fitted without carpet underlay. Cost-effective for those looking to fit flooring on a budget, they are typically easy to fit and remain durable with a long life expectancy.

Can I 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 flooring does not require underlayment?

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

What is the life expectancy of underlayment?

Synthetic underlayment is made of tough materials that effectively resist water and UV rays. Its textured surface provides improved traction for roofers, making it safer to work on sloped roofs, especially in wet or icy conditions. Estimated lifespan: 20 to 35 years.

How much should I pay for underlay?

What is the average price of underlay? The price of carpet underlay is calculated per m2 and – dependent on the supplier and the quality of the product – you can expect to pay anywhere between £2-£8. The more luxurious the underlay, and the better its overall performance, the more it will cost.

How many years does underlay last?

Underlay can last anywhere between 5 and 20 years. Foam and Felt underlay can last up to 8-12 years. However, if foam underlay isn't properly installed or maintained, it lasts only 5 years. Acoustic and rubber underlay have the longest lifespan, lasting 10-20 years.

Which type of underlay is best?

Sponge rubber underlay combines the best of durability and comfort. Sponge rubber underlay is made from synthetic rubber, and this gives comfort and durability meaning it can last for years and years underneath your carpet.

Is it worth buying expensive underlay?

It may seem wasteful to spend hard-earned cash on something that won't even be seen. But no matter how small your budget, don't be tempted to pass on the underlay. Yes, it's a hidden layer, but it offers many useful benefits. Without it, you will notice a big difference in the final look and feel of your carpet.

How deep should underlay be?

A 3mm underlay is ideal for flooring less than 18mm thick. This thinner option provides sufficient support without adding unnecessary height. For flooring that is 18mm or thicker, you'll need a 5mm underlay. This added thickness ensures better stability and cushioning for heavier or more robust flooring options.

Can you lay flooring without underlay?

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.

Does luxury vinyl plank 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.

Is underlay necessary?

Typically, carpets installed without a new underlay tend to have a shorter lifespan and are more susceptible to accelerated wear. Your old underlay will not be in the best condition and therefore won't provide the support and comfort needed for your new investment.

What happens if you don't put underlayment under vinyl plank flooring?

Under vinyl flooring, underlayment is essential for moisture control, sound deadening, warmth, and minimizing floor deflection.

How important is floor underlayment?

Flooring Underlayment

The thin layer of material helps cushion, sound absorption, insulation and reduce wear with your flooring. For laminate or engineered wood flooring, it provides a “vapor barrier” to prevent moisture from coming through and damaging your floor.

How much does floor underlayment cost?

A typical price for a Flooring Underlayment is $79 but can range from approximately $7 to $294. What are common types of Flooring Underlayments? Roll, Panel and Fan fold are among the most common types of Flooring Underlayment. What are the most popular Flooring Underlayment features?

Do you need underlay for vinyl flooring?

Most vinyl floors don't need an underlay. If the surface you're laying on is level and smooth, a well-cushioned vinyl floor should be fine on its own. Our Luxury Vinyl Click flooring is laid using the same as technique as laminate options in that it's loose laid creating a "floating floor".

Do modern carpets need underlay?

Yes, underlay for carpet is typically necessary as it enhances comfort, extends carpet life, and improves thermal insulation and soundproofing.

What happens if you don't use underlay for carpet?

In general, carpets without underlay have a much shorter lifespan and are more at risk of rapid wear and tear. Underlay is especially important if you're planning on laying carpet over concrete as it will help make walking across the room much more comfortable.

How much is good underlay?

Underlay per square meter should cost you between £3 and £8 per square meter, including delivery. The actual price per square metre depends on a number of variables, but you should expect to see prices per square meter of underlay that range between £3 and £8.

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