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Carpet Padding Buying Guide: Everything You Need to Know

The only thing more difficult than deciding what type of carpet you want is understanding what type of carpet padding is good for your home. What is carpet padding and what kind should you buy, though? That question has more than one answer. We’re here to break it down.

Picking out the type of carpet you want can be fun. You get to decide on the feel, thickness and color of the carpet. There are a ton of different options – carpet tiles, broadloom, berber – which makes choosing carpet an exciting shopping experience!

Buying carpet padding can be a little different.

Carpet padding is less about matching looks to home and more about matching a carpet pad to your daily needs. It’s the technical side of shopping for carpet.

It’s also completely necessary, so there’s no way around it!

When you buy carpet from Home Depot or wherever, you’ll find those folks tend to just throw in a random carpet pad and tell you it’s good. That’s not how we do things here.

We think carpet padding is more complicated than that (think lingo like thickness, weight, rebonded, frothed etc.) and it’s important to get the right carpet pad for your home. After all, carpet padding is responsible for keeping your new carpet durable and comfortable for years to come.

Not sure which carpet padding is for you? This guide will help you choose.

What is Carpet Padding?

Support Plus Carpet Padding- bonded carpet pad

Carpet padding is usually a foam underlayment specifically designed for installation under broadloom carpet. It serves a number of uses such as insulation, acoustics, support, and comfort.

Most carpet padding is comprised of polyurethane foam – the same stuff that’s in furniture, mattresses, and even car seats. This foam offers support to your carpet, allowing it to last longer in your home.  


Why Do I Need Carpet Padding?

Comfort Preferred Carpet Pad- bonded carpet padding

Carpet padding is necessary for experiencing the full benefit of owning carpet. It’s what keeps carpet comfortable, but is also what maintains the life of your carpet.

Carpet padding does a little more than adding some squish to your step. In fact, it does a lot more. Just how much? Let’s take a look.

Extends the Life of Carpet

That thick, luxurious carpet you bought won’t last without a carpet pad under it. Carpet padding helps maintain the look of your carpet as well as its overall life. The truth is, carpet installed without a pad just doesn’t last as long. That’s because there’s nothing behind it absorbing the shock of everyday wear and tear.

According to the Independent Textile Testing Service, carpet without a carpet pad under it resulted in a 19.3% loss in thickness after a 150-lb. weight was rolled over fibers 20,000 times. In contrast, a carpet with a carpet pad under it resulted in a loss of 5-10% during the test.

Having carpet padding helps reduce fiber crushing and keeps your carpet thicker, longer.

Provides Comfort

A big selling point of carpet is that it’s comfortable and soft. The truth is, no matter how thick or tall your pile height is, a carpet pad is required to make that carpet as comfortable as possible.

Carpet padding absorbs the impact of your footstep, making it comfortable to walk on. It also helps reduce walking fatigue with its shock-absorbing properties.

Improves Acoustics

The reason why any underlayment is important is because it helps improve the acoustics of a home. Sound-absorbing materials are necessarily for apartments, condos, and two-level homes. After all, nobody wants to hear other people stomping around!

Studies have shown that using carpet padding significantly increases impact noise ratings and results in measured noise reduction.

Thermal Insulation

Last, carpet padding helps provide some insulation to your home. If you live in a cold environment, carpet padding will help retain some of your home’s heat. If you live in a hot environment, carpet padding will prevent cool air from escaping.

The insulating properties of carpet padding keep your energy bill down and your home well insulated.


Related Content >> Carpet FAQ

How Thick Should My Carpet Padding Be?

Comfort Preferred Carpet Pad- bonded carpet padding

The two metrics to consider when choosing a carpet padding are thickness and weight. We’ll get to weight in a minute; first, let’s talk about thickness.

Unlike with other types of flooring, thicker doesn’t necessarily mean better in the carpet padding world. In fact, some carpet types do better with a thinner padding.

In general, the thickness for carpet padding shouldn’t be more than ½”. The Carpet and Rug Institute recommends a carpet padding no thicker than ⅜” for Berber carpets.

Let’s take a look at how thickness affects certain uses and types of carpet.

  • High traffic areas: For heavy traffic areas, such as commercial settings, thicker carpet padding is not ideal. For these situations, you’ll want a thinner carpet pad with a heavier weight.
  • Living rooms, bedrooms and dens: These residential areas of the home are the perfect place to splurge on a thicker carpet padding.
  • Berber carpet: A thick pad can actually damage thin carpet types, such as berber. That’s because the thick carpet pad has too much “give” for a short-pile carpet. For this reason, you’ll want a thinner carpet pad.

What is Carpet Padding Weight?

Smart Cushion- bonded carpet pad

Carpet padding weight, also called density, is the second most important factor you should consider when shopping for the perfect carpet padding.

This measurement is usually calculated by pounds per cubic foot, and most carpet pads fall in between a 3-10 lb. measurement.

For the best bang for your buck, we recommend at least a 6-lb. pad for a residential carpet. For the best in durability and comfort, an 8lb pad will do the trick.

Related Content >> Underlayment Guide

Types of Carpet Padding

Okay, now that you’ve got the basics down, it’s time to get to the star of the show: the carpet padding.

There are a lot of different types of carpet padding out there, so we know how confusing it can be. Which carpet padding is best for your installation can depend on a number of different factors. Let’s take a look at the different types of carpet padding out there.

Bonded Foam Carpet Pad

Comfort Preferred Carpet Pad- bonded carpet padding

Bonded foam carpet pads are the most commonly used carpet underlayment. How common? Well, according to the Carpet Cushion Council, 85% of total carpet padding produced in the United States is bonded, also known as rebonded, foam. Bob Clark, from the Carpet Cushion Council, says bonded foam is a “significant recycling success story,” as it contains 100% recycled foam. Saving billions of pounds of foam from the landfill.

Bonded foam carpet pads are distinguished by their multi-colored appearance, which is the result of several types of scrap foam being bonded together. These offer the most value for your dollar and come in several different thicknesses and densities.


  • Most popular choice: Sometimes the most popular choice isn’t the best choice, but in this case, it is! Bonded foam pads are popular for a reason – durability and value.
  • Value: Speaking of value, bonded foam offers a wide range of prices, densities and thicknesses, making it the biggest bang for your buck.
  • Eco-friendly: Bonded foam carpet pads are the most eco-friendly of the carpet pads. They are made from 100% recycled foam.
  • Durability: Bonded carpet padding is highly durable, with many different options for density and thickness, so you can properly match your carpet pad to your carpet.


  • Foot traffic: If you have an extremely high amount of foot traffic, such as in a commercial setting, you might consider something even more durable instead.

Prime Foam Carpet Pad

combo foam underlayment- prime foam carpet padding

Prime foam is the same type of cushioning used in mattresses and furniture. It’s a large mass of foam that’s been sliced to be used as carpet cushioning. It tends to be more firm than other types of carpet padding, but it can sink quickly.


  • Soft step: The air pockets in prime foam allow for a very soft step.
  • Inexpensive: There is a lot of variety in density and thickness available, which can make this an inexpensive option.


  • Air pockets: Remember those air pockets we just mentioned? Prime foam’s air pockets also collapse over time, making this a poor option for high traffic.
  • Durability: Prime foam isn’t the best option for high traffic areas and the foam will collapse.

Frothed Foam Carpet Pad

courage carpet pad- frothed foam carpet padding

Frothed foam carpet padding is made by injecting gas while the foam is in a liquid state. This creates a more dense and durable foam. Frothed foam is often used as attached carpet padding on broadloom carpet.

Frothed foam is extremely durable and holds up great over time. However, it comes with a hefty price tag.


  • Durability: Frothed foam carpet padding is one of the most durable carpet pads on the market. It can resist furniture indents and crushing.
  • Attached: Some broadloom carpet comes with this foam already attached to the back.
  • High traffic use: Because this is a durable, high-density foam, it’s great for heavy traffic.


  • Price tag: Unfortunately, this carpet padding can be rather expensive. You’ll find more inexpensive options that can be just as good.

Memory Foam Carpet Pad

charity carpet pad- memory foam bonded carpet padding

Memory foam carpet pads are essentially frothed foam, but with an extra element added to give it that signature memory foam feel. If you’ve ever laid on a memory foam mattress, you know that memory foam is incredibly soft and comfortable. A memory foam carpet pad will make your carpet just as soft to step on.

However, memory foam will squish over time, and that constant stretching of carpet backing will damage your carpet in the long run. This makes memory foam not ideal for any high-traffic situation.  


  • Comfort: Memory foam carpet pads are the most comfortable on the market. There’s a reason people love memory foam mattresses so much.
  • Durability: Memory foam is as durable as frothed foam and bonded foam carpet pads. However, it may not hold up as well under high traffic.


  • Expense: This softness is going to come with a price tag. It’s more expensive than the 100% recycled stuff.
  • New: Memory foam is still on the newer side in the carpet pad industry. It’s hard to say how well this new foam will hold up over time.

Fiber Carpet Pad

eco carpet pad- fiber carpet padding

This isn’t foam, but rather a combination of different types of fiber: nylon, polyester, felt, etc. Fiber carpet pads are usually recommended for berber carpet types, and may even be required to maintain warranty. Don’t worry though, they’re very durable.

Fiber carpet pads aren’t super soft, but it is a flat and dense pad, making it ideal for berber carpet and other commercial carpeting. However, unless your warranty requires it, it’s not a top choice.


  • Inexpensive: Fiber carpet pads tend to be the most inexpensive choices out there.
  • Flat and dense: This type of carpet padding is ideal for looped carpet types or commercial carpeting. It gives some comfort to your carpet, but won’t damage low-pile carpet types.
  • Traffic: Fiber carpet pads can accommodate many types of traffic: low, medium and high.


  • Not comfortable: Fiber carpet pads aren’t the #1 choice when it comes to comfort. It’s picked usually for high-traffic situations and for warranty requirements.
  • Natural fibers: Most fiber carpet padding can be found with synthetic fibers; however, a natural fiber pad can be prone to mold.
    Related Content >> Carpet Installation Cost Guide

What Carpet Padding is Best for My Floor?

brown broadloom carpet in living room

After this amount of information, you probably just want to know: what carpet padding is best for me?

Every individual situation is unique, of course, but we’d still like to give our best recommendation. Below we have common installation types and our best stats on what to buy.

Residential Carpet

Residential carpet installations are all about comfort. For this reason, you can purchase a thicker carpet pad. Here’s what we recommend:

Carpet Pad Type Density Thickness
Bonded 6.5lbs – 8lbs 7/16” – ½”
Frothed Foam 10lbs -12lbs 7/16” – ½”

Commercial Carpet

Commercial carpet installations usually focus on long-term durability. Because of this, a thinner, but denser carpet pad is recommended. Remember, looped and berber carpets require specific carpet padding. Here are our recommendations:

Carpet Pad Type Density Thickness
Bonded 6.5 lbs ⅜”
Frothed Foam 12 lbs + ¼”
Synthetic Fiber 6.5 lbs 3/10”

Looped Carpet

Looped carpet refers most often to berber carpet styles or other short pile commercial carpet types. For these installations, most manufacturers require synthetic fiber pads.

Carpet Pad Type Density Thickness
Synthetic Fiber 6.5 lbs ¼” – 3/10”

High Traffic

Last, we have high-traffic installations. Typically high traffic occurs in commercial settings, such as stores and offices. For these types of installations, a thin and dense carpet pad is preferable.

Carpet Pad Type Density Thickness
Synthetic Fiber 6.5 lbs 3/10”
Frothed Foam 12 lbs + ¼”
Bonded 6.5lbs ⅜”


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Carpet Padding FAQ

Hope carpet pad- bonded carpet padding

What Carpet Padding is Best for Berber Carpet?

Manufacturers of berber carpet usually have specific requirements regarding carpet padding. Be sure to look at those requirements to prevent any void in warranty and to also get the most life out of your carpet.

In general, synthetic fiber carpet pads are recommended.

Can I Reuse Carpet Padding?

In most situations, we don’t recommend reusing carpet padding.

How Much Does Carpet Padding Cost?

It fluctuates depending on what type of carpet padding you’re buying. Typically, you can find carpet padding for about $3-4 a square foot.

How Do I Install Carpet Padding?

Carpet padding should be cut to fit inside any tack strips and can be either glued or stapled to the subfloor.

What Carpet Padding do You Recommend?

At the end of the day, we believe bonded carpet padding is the way to go!



About Kayla Haas


Kayla Haas is a Phoenix-based writer, flooring expert, and reading enthusiast. Most of her writing specializes in artificial grass, carpet, and vinyl flooring. Her favorite part of writing is the research. If you’re looking for obscure facts or little-known history about flooring, she’s the person to talk to as she stores them away in hopes of impressing people at parties.

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Carpet Fitters and Flooring
May 16, 2019 1:59 am

Totally agree with your carpet padding concert unnaturally before reading your post raven thought how much carpet padding importance. Thank give us such a wonderful information carpet longer life supporting tips.

Michelle Barichello
May 16, 2019 10:19 am

Thank you!

Charles M Karbowiak
Charles M Karbowiak
November 2, 2019 5:51 am

Is there a better carpet pad for installation on a concrete slab foundation?

Chelsi Hewitt
November 4, 2019 8:03 am

Hello Charles,

Thank you for your question! All of our carpet padding is suitable to use over a concrete subfloor. If you’re looking for some extra comfort, consider high-density carpet pads such as these:!filter=380,976

I hope this helps. Get in touch if you have any questions!

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