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How to Pick the Best Carpet Underlay – UK Review

Give your carpet a luxury soft feeling underfoot with the best carpet underlay available in the market today! We’ve also included an in-depth buyer’s guide to inform your choice.

Carpet underlays are an integral component that determines how soft your carpet feels, how good it looks, and how long it lasts. And to achieve all this, you’ll, of course, need to have the best carpet underlay for your home.

But there are no one-size-fits-all underlays. Some carpets underlays are extremely firm and are perfect for high traffic areas. Others are thick and may hinder the functioning of your underfloor heating. Also, there are carpets meant for thermal insulation, while others are best for soundproofing. Other key factors you must look at are the tog ratio, thickness, and the type.

With so many factors to consider, and the numerous options available, it can be challenging to pick the best carpet underlay for your home is. But we’ve compiled this review to make your search easier.

We invested hours researching the best carpet underlays in the market. And we finally narrowed to a few of the best carpet underlays, which we have reviewed below.

Table of Contents

Top Picks: The Best Carpet Underlay!

Top Pick
1
2
3
4
Preview
30m² of Luxury 10mm Thick PU Carpet Underlay...
12mm Thick - Spring PU Foam Carpet Underlay - Good...
HEQUN - Multipurpose non slip mat - Anti Slip Rug...
Plushwalk Carpet Underlay - 12mm - 15m2 = (11m x...
Product
30m² of Luxury 10mm Thick PU Carpet Underlay...
12mm Thick - Spring PU Foam Carpet Underlay - Good...
HEQUN - Multipurpose non slip mat - Anti Slip Rug...
Plushwalk Carpet Underlay - 12mm - 15m2 = (11m x...
Top Features
• Best carpet underlay • 1.37m wide • 10mm thick • Environmentally friendly
• Best carpet underlay for noise reduction • Three size options including 5m², 10m², or 15m² • 12mm thick • Plush underfoot
• Most versatile carpet underlay • Durable • 4 sizes • Ideal for all types of floors
• Best carpet underlay for thermal insulation • Excellent acoustic insulation • 12mm thick • 1.37m wide
Ratings
201 Reviews
298 Reviews
527 Reviews
90 Reviews
Price
£79.98
£44.99
£1.99
Price not available
-
-
-
-
Top Pick
1
Preview
30m² of Luxury 10mm Thick PU Carpet Underlay...
Product
30m² of Luxury 10mm Thick PU Carpet Underlay...
Top Features
• Best carpet underlay • 1.37m wide • 10mm thick • Environmentally friendly
Ratings
201 Reviews
Price
£79.98
-
Buy Now
2
Preview
12mm Thick - Spring PU Foam Carpet Underlay - Good...
Product
12mm Thick - Spring PU Foam Carpet Underlay - Good...
Top Features
• Best carpet underlay for noise reduction • Three size options including 5m², 10m², or 15m² • 12mm thick • Plush underfoot
Ratings
298 Reviews
Price
£44.99
-
Buy Now
3
Preview
HEQUN - Multipurpose non slip mat - Anti Slip Rug...
Product
HEQUN - Multipurpose non slip mat - Anti Slip Rug...
Top Features
• Most versatile carpet underlay • Durable • 4 sizes • Ideal for all types of floors
Ratings
527 Reviews
Price
£1.99
-
Buy Now
4
Preview
Plushwalk Carpet Underlay - 12mm - 15m2 = (11m x...
Product
Plushwalk Carpet Underlay - 12mm - 15m2 = (11m x...
Top Features
• Best carpet underlay for thermal insulation • Excellent acoustic insulation • 12mm thick • 1.37m wide
Ratings
90 Reviews
Price
Price not available
-
Buy Now

Last update on 2021-04-29 / Affiliate links / Images from Amazon Product Advertising API

5
6
7
8
Preview
247Floors Cloud 9 Cirrus 9mm Thick Carpet Underlay...
Carpet Underlay Tredaire Dreamwalk 11mm Thick...
DIY Doctor - 2x Anti Slip Gripper Rolls - 11,600...
10mm Thick - Wool Heat Insulation Felt Carpet...
Product
247Floors Cloud 9 Cirrus 9mm Thick Carpet Underlay...
Carpet Underlay Tredaire Dreamwalk 11mm Thick...
DIY Doctor - 2x Anti Slip Gripper Rolls - 11,600...
10mm Thick - Wool Heat Insulation Felt Carpet...
Top Features
• Best underlay for stairs • 9mm thick • 2.6 tog rating • 39 db noise reduction
• Best carpet underlay for high traffic areas • Impact sound reduction of 46db • 3.13 tog rating • 11mm thick
• Best rubber carpet underlay • Non-slip • Ideal for all types of floorings • Machine washable
• Best wool felt carpet underlay for heat insulation • 10mm thick • warm and soft underfoot
Ratings
82 Reviews
136 Reviews
1,956 Reviews
73 Reviews
Price
£69.99
£101.25
£10.00
£48.99
-
-
-
5
Preview
247Floors Cloud 9 Cirrus 9mm Thick Carpet Underlay...
Product
247Floors Cloud 9 Cirrus 9mm Thick Carpet Underlay...
Top Features
• Best underlay for stairs • 9mm thick • 2.6 tog rating • 39 db noise reduction
Ratings
82 Reviews
Price
£69.99
-
Buy Now
6
Preview
Carpet Underlay Tredaire Dreamwalk 11mm Thick...
Product
Carpet Underlay Tredaire Dreamwalk 11mm Thick...
Top Features
• Best carpet underlay for high traffic areas • Impact sound reduction of 46db • 3.13 tog rating • 11mm thick
Ratings
136 Reviews
Price
£101.25
-
Buy Now
7
Preview
DIY Doctor - 2x Anti Slip Gripper Rolls - 11,600...
Product
DIY Doctor - 2x Anti Slip Gripper Rolls - 11,600...
Top Features
• Best rubber carpet underlay • Non-slip • Ideal for all types of floorings • Machine washable
Ratings
1,956 Reviews
Price
£10.00
Buy Now
8
Preview
10mm Thick - Wool Heat Insulation Felt Carpet...
Product
10mm Thick - Wool Heat Insulation Felt Carpet...
Top Features
• Best wool felt carpet underlay for heat insulation • 10mm thick • warm and soft underfoot
Ratings
73 Reviews
Price
£48.99
-
Buy Now

Last update on 2021-04-29 / Affiliate links / Images from Amazon Product Advertising API

1. T & A Upholstery 30m² Luxury 10mm Thick PU Carpet Underlay Rolls

30m² of Luxury 10mm Thick PU Carpet Underlay...
201 Reviews
30m² of Luxury 10mm Thick PU Carpet Underlay...
  • 1.37m Wide
  • 10mm Thickness, Grade A, Environmentally Friendly
  • Non Toxic, Easy to Fit, 90kg per m3, 2.71 Tog
  • Free Samples Available - Just Request One Via Messages

Last update on 2021-04-29 / Affiliate links / Images from Amazon Product Advertising API

Key Features:

  • Density: 90kg per m³
  • Tog rating: 2.71
  • Thickness: 10mm
  • Width: 1.37m
  • Coverage: 30m²
  • 2 Rolls each 11 metres long

The T & A Upholstery Thick PU Carpet Underlay is top of the class grade A carpet underlay that’s perfect for use under all your carpets. It has a tog rating of 2.71. Carpet underlays with a tog rating of anything above 2.5 are excellent heat insulators and are perfect for cold winters. You will notice a drastic drop in your usual energy bills.

This underlay has a density of 90kg per m³ and a thickness of 10mm. This is a relatively high density that ensures your carpet underlay stays firm and will serve you for many years to come. It is also extremely easy to cut and install. And once installed, your carpet feels well-cushioned and lovely underfoot.

The T & A Upholstery Thick PU Carpet Underlay is also environmentally friendly and is made out of non-toxic recycled materials. The only slight downside we noticed was that there were some hard bits on the carpets. Luckily, once we installed the carpet, the hard bits were no longer noticeable.

Pros:

  • Easy to install
  • Made of top quality PU foam
  • The underlay feels lovely underfoot
  • Non-toxic and environmentally friendly material

Cons:

  • There are a few hard bits, but you can barely feel them

This Carpet Underlay is well made, thick, large, and soft underfoot, and it comes in at a very fair price.

2. Flooring Online UK Spring PU Foam Carpet Underlay

12mm Thick - Spring PU Foam Carpet Underlay - Good...
298 Reviews
12mm Thick - Spring PU Foam Carpet Underlay - Good...
  • 12mm Thick
  • Choose Size: 5m2 , 10m or 15m2
  • Feels Soft Underfoot
  • Superb Acoustic & Insulation Properties

Last update on 2021-04-29 / Affiliate links / Images from Amazon Product Advertising API

Key Features:

  • Density: kg per m³
  • Tog rating: 3.3
  • Thickness: 12 mm
  • Width: 1.37m
  • Coverage: 5, 10, or 15m²
  • Sound reduction: 43db 

If you a looking for the best carpet underlay for soundproofing and noise reduction, our top choice may not be a perfect choice. That’s because its thickness is only at 10mm.

Luckily, our second contender, the Flooring Online UK Spring PU Foam Carpet Underlay, will come in handy. It has an impressive thickness of 12mm. With this thickness, your carpet will feel ultra-soft and bouncy. Installing it is a breeze, and you can cut it using scissors. Ensure you install with the purple side facing up to obtain maximum protection for your floor and cushioning on your feet.

What we like the most about this carpet is its excellent heat insulation. Its tog ratio is approximately 3.3. And we noticed our energy bill reduced greatly in just one month after installing. The carpets retain most heat leaving your rooms warm all day long. Another standout feature of this carpet underlay is its superb soundproofing ability.

If you live in an apartment and you’ve been searching for the best carpet underlay to reduce the noise coming from the floors below, this is a great choice worth considering. It reduces noise by a whopping 43db. Plus, it is available in three size options, including 5. 10 and 15m². These versatile sizes make it easy to fit it in rooms of all sizes.

Pros:

  • Super easy to cut and fit
  • Thick and spongy underfoot
  • Excellent noise reduction of up to 43dbs
  • Perfect heat insulation
  • Made of top-quality PU Foam 

Cons:

  • May not be ideal for use on stairways

From its 12mm thickness to the 3.3 tog rating, the Flooring Online UK Spring PU Foam Carpet Underlay takes the crown for the best carpet underlay for thermal insulation.

3. HEQUN – Multipurpose Anti-slip carpet underlay

Sale
HEQUN - Multipurpose non slip mat - Anti Slip Rug...
527 Reviews
HEQUN - Multipurpose non slip mat - Anti Slip Rug...
  • Premium Quality: carpet underlay is made from PVC foam,...
  • Ultra Strong Hold : Using a specially developed anti-slip...
  • Extends the life of your rug : It keeps rugs flat and in...
  • Easy to lay out : Available in 4 standard sizes. Can easily...

Last update on 2021-04-29 / Affiliate links / Images from Amazon Product Advertising API

Key Features:

  • Colour: beige
  • 4 size options
  • Material: PVC foam
  • Ideal for all floors

Sometimes all we need is a cheap carpet underlay to protect our carpets without really looking for insulation or the extra bounciness. In such cases, a PVC carpet underlay is ideal.

One of the most affordable options we came across during our search for the best carpet underlays was the HEQUN – Multipurpose Anti-slip carpet underlay. It is a versatile option that is not only ideal for use on wooden and marble flooring, but you can also use it under rugs, smooth surfaces, outdoor surfaces, and more.

This underlay is beige in colour and comes in four standard sizes, including 80 x 180cm, 100 x 180cm, 120 x 180cm, and 160 x 180cm. It is made out of premium quality polyvinyl chloride, which is a durable and tear-resistant material. Plus, it provides great anti-slip on smooth surfaces while still protecting your carpet.  The carpet underlay grips firmly on the floor, preventing your rugs or carpets from wrinkling.

We were also impressed by the fact that this is a very low maintenance underlay. It has a weave design that is easy to clean and prevents the accumulation of dust, odours, and mould. Additionally, it is easy to cut as needed using household scissors. And if you are not satisfied with your purchase, HEQUIN allows a no questions asked full refund.

Pros:

  • Cheap PVC foam rug and carpet underlay
  • Easy to cut and lay
  • Versatile and can be used on wooden or marble flooring and other smooth surfaces
  • Available in four standard sizes

Cons:

  • Doesn’t offer a soft underfoot like other options we reviewed

If you are searching for an underlay to protect your carpet and prevent it from slipping on smooth surfaces, this budget underlay is probably your best bet.

4. Plushwalk Carpet Underlay

Plushwalk Carpet Underlay - 12mm - 15m2 = (11m x...
90 Reviews
Plushwalk Carpet Underlay - 12mm - 15m2 = (11m x...
  • The Ultimate Carpet Underlay - Using Memory Foam
  • 12mm Thickness - Superb Levels of Softness Underfoot
  • Roll Size: 11metre x 1.37metre = 15sq.mtr Coverage
  • Damp Proof Membrane Installed. High Acoustic & Thermal...

Last update on 2021-04-29 / Affiliate links / Images from Amazon Product Advertising API

Key Features:

  • Tog rating: 3.3
  • Thickness: 12mm
  • Width: 1.37m
  • Sound reduction: 47db
  • 11 metres long

If you are looking for a premium carpet underlay that will give you absolute value for your money, the Plushwalk Carpet Underlay is a perfect choice.

Just like its name suggests, this carpet underlay is thick and spongy. When installed, it will leave your carpet feeling super soft and plush underfoot.  It has a thickness of 12mm, is 1.37m wide, and 11m long. The carpet underlay is also an excellent noise reducer. It has a tog rating of 3.3, one of the highest we came across during our research.

Due to its thickness, high density, and impressive tog ratio, the Plushwalk Carpet Underlay reduces the noise from outside your home by approximately 47db. What’s more, this underlay has two plastic backings that reinforce its quality to ensure optimum durability. Your carpet will last for many years to come. The backings also help to reduce any airborne noise. And thanks to the damp-proof membrane, your carpet will remain protected and will look new for an extended period.

You can use your underlay on all types of floors, including wood, concrete, asphalt, etc. The carpet is also an excellent heat insulator, which is very useful, especially during chilly weather.

Pros:

  • A non-slip underlay that is ideal for use on all types of floors
  • Excellent soundproofing with a noise reduction rating of about 47db
  • The 12mm thickness makes it perfect for heat insulation
  •  

Cons:

  • The price is a little on the higher side

The Plushwalk Carpet Underlay wins the top spot for our premium pick because it is a luxurious, thick, and top-quality option that will serve you for years.

5. 247Floors Cloud 9 Cirrus 9mm Carpet Underlay

247Floors Cloud 9 Cirrus 9mm Thick Carpet Underlay...
82 Reviews
247Floors Cloud 9 Cirrus 9mm Thick Carpet Underlay...
  • Thickness: 9mm
  • Underlay Impact Sound Reduction: 39 db
  • Full Roll Size: 11m x 1.37m (15.07 sq.m)
  • Tog Rating: 2.6 Tog

Last update on 2021-04-29 / Affiliate links / Images from Amazon Product Advertising API

Key Features:

  • Tog rating: 2.6
  • Thickness: 9mm
  • Width: 1.37m
  • Sound reduction: 39db
  • 11 metres long

Have you bought a new carpet and are looking for the best underlay for the stairs? The ideal thickness of underlay for stairs is 9mm. It is neither too thick to interfere with the installation of your carpet, nor is it too thin that it might not serve its purpose.

Our winner for the best carpet underlay for stairs is the 247Floors Cloud 9 Cirrus 9mm Carpet Underlay. It is 9mm thick and is made of top quality material that protects your carpet and improves the feel of your carpet. Your carpet will feel bouncy and soft underfoot.

The underlay has a tog rating of 2.6. And although this rating isn’t as high as some other alternatives we have reviewed above, this amount provides a decent amount of heat insulation and cushioning. It also has excellent soundproofing power and has an impact sound reduction of approximately 39db.

This carpet underlay is 11m long and 1.37m wide, covering an area of up to 15.07sq.m.

Pros:

  • 9mm carpet underlay that fits flawlessly in stairways
  • Has a noise reduction of about 39db
  • A top quality underlay for stairs that feels soft underfoot

Cons:

  • The noise reduction could have been better

The 247Floors Cloud 9 Cirrus 9mm Carpet Underlay fits well, lengthens your carpet’s life, and provides excellent heat insulation.

6. Carpet Underlay Tredaire Dreamwalk

Carpet Underlay Tredaire Dreamwalk 11mm Thick...
136 Reviews
Carpet Underlay Tredaire Dreamwalk 11mm Thick...
  • Impact Sound Reduction: 46db
  • Full Roll Size: 15.07m² approx.(11m x 1.37m x 11mm)
  • Uk Mainland Only, Highland and Island surcharges will apply
  • Tog Rating : 3.13 Tog

Last update on 2021-04-29 / Affiliate links / Images from Amazon Product Advertising API

Key Features:

  • Tog rating: 3.13
  • Thickness: 11mm
  • Width: 1.37m
  • Sound reduction: 46db
  • 11m long

Fed up with the rate at which your new carpets flatten? With a premium bouncy carpet underlay like this Carpet Underlay Tredaire Dreamwalk, you can now protect your carpets. And you’ll also protect the floor from all furniture markings. That’s because the carpet underlay is made with 11mm top quality PU foam, which transforms any carpet to a luxurious carpet that feels good on your feet. Plus, it bounces back into shape with each step.

Thanks to this thickness, the high density, and high tog rating, this top-rated underlay has an impressive impact sound reduction of 46db. It has a tog rating of 3.13 and provides superb thermal insulation to your home. One full roll is 11m long and has a width of 1.37m. It is large enough to cover an area of 15.07 square metres.

Because of its topnotch quality, this luxurious carpet underlay is perfect for high traffic areas such as the lounge, dining area, and stairs.

Pros:

  • Top-quality carpet underlay with a protective backing that protects your carpet
  • Has a tog rating of 3.13 and has good insulation qualities
  • Softer underfoot than most other underlays we’ve reviewed

Cons:

  • You may notice some hard bits on the underlay

For a thick yet spongy carpet underlay that is easy to lay and has a nice feel on feet, the Carpet Underlay Tredaire Dreamwalk is the best bet.

7. DIY Doctor Non Slip Rubber Carpet Underlay

DIY Doctor - 2x Anti Slip Gripper Rolls - 11,600...
1,956 Reviews
DIY Doctor - 2x Anti Slip Gripper Rolls - 11,600...
  • ✅Our best selling, Amazon's Choice Award Winning, 2 x...
  • ✅Stop the dangerous & unsightly crawling of mats and rugs...
  • ✅Get creative with how to use it. Underneath a wooden...
  • ✅ Find your own inventive use for our non slip mat? Let us...

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Key Features:

  • 7 color options
  • Rubber carpet underlay
  • Two 190 x 30.5 cm rolls
  • Heavy duty 400gsm
  • Coverage of over 11,600cm²

Now introducing an affordable yet versatile rubber carpet underlay you can use with all types of floors and surfaces. The DIY Doctor Rubber Carpet Underlay comes as two 190 x 30.5 cm rolls. It is an extra thick and non-slip mat with total coverage of up to 11, 600cm². If you want to cover a large area, you’ll only need to purchase several rolls and place them adjacent to each other.

This rubber carpet underlay feels soft and foamy, and it comes in a wide range of colours including, blue, black, green, yellow, and more. It is easy to cut and lay. And it is durable even with frequent use. And the best part? Because this rubber carpet underlay is non-slip, you can get creative with its use. You can use it under the shelf, sofa cushions, or any other smooth and slippery surfaces.

Other than versatility, another feature we love above this rubber carpet underlay is its durability. It protects your carpet and all the surfaces you lay it on. But on the downside, it is not thick and will not add any bouncy and soft underfoot feel on your carpet.

Pros:

  • A slightly cushioned that protects your carpet
  • Versatile – you can use it on almost all surfaces
  • Easy to cut with scissors
  •  Has an excellent grip and prevents your rugs from slipping

Cons:

  • Provides very little cushioning and doesn’t feel as comfortable as other options above

This is an excellent rubber carpet underlay that you can use it under almost everything. It is durable and non-slip.

8. Flooring Online UK Wool Heat Insulator Felt Carpet Underlay

10mm Thick - Wool Heat Insulation Felt Carpet...
73 Reviews
10mm Thick - Wool Heat Insulation Felt Carpet...
  • 10mm Thick - 42oz Wool Underlay
  • 15sq.metres Per Roll
  • High Heat Insulation
  • Warm Underfoot

Last update on 2021-04-29 / Affiliate links / Images from Amazon Product Advertising API

Key Features:

  • 42 oz wool carpet underlay
  • 15mm thick
  • Coverage of 15sq.m per roll
  • Excellent heat insulation

Many people still debate whether they should choose a wool carpet underlay instead of the popular PU foam or rubber options. But from our research, all three types have distinct advantages, but when you’re aiming for heat insulation and retention, wool carpet underlays are an ideal pick.

Our favourite pick of wool felt underlay is the Wool Heat Insulation Felt Carpet Underlay by Flooring Online UK. It is a 10mm thick underlay that has superb heat insulation capabilities. The underlay is made out of fibre that not only prevents heat loss from inside your house but it also retains any heat inside the home for extended periods.

This underlay also provides ample insulation from airborne noise. It is made of top quality wool, and laying it is a breeze. And thanks to the 10mm thickness, this underlay still provides a warm and comfortable underfoot. It also protects your carpet, giving it a longer life.

Pros:

  • Great heat insulation and retention to keep you warm even in chilly weather
  • Protects your carpet
  • Reduces any furniture marks on floors
  • Durable and doesn’t disintegrate or flatten with time
  • Easy to lay

Cons:

  • Doesn’t feel as soft underfoot as other options we have reviewed above

This felt carpet is of excellent quality, easy to cut and lay, and its heat insulation is good.

best carpet underlay

The Best Carpet Underlay - A Buyers Guide

With so many options of the best carpet underlays, as in the review section above, it can be a little tricky choosing the best one for your needs.

And that’s why we have included this comprehensive buyer’s guide. Below we’ll walk you through all the essential things you need to know when buying a carpet underlay.

What is Carpet Underlay?

A carpet underlay is a layer, mostly made of foam, rubber, or felt, which you place underneath all your carpeted areas. The underlay’s thickness varies from one material to the other. However, most underlays have a thickness of 6 to 12mm.

The best carpet underlay for your bedroom may not be the best choice for your lounge or stairway. That’s because your bedroom is a low to medium traffic area. An underlay with medium thickness will work just fine. High traffic areas such as the dining room and stairway require a denser underlay to offer better cushioning.

Experts recommend that you should replace your carpet underlay each time you are installing a new carpet. Your carpet will feel softer and also last longer.

Do I Need the Best Carpet Underlay?

The best carpet underlay has numerous benefits, which we shall look at next.

1.Soundproofing

Is your house often filled with non-ending (and sometimes irritating) noise from the neighbourhood? With the best carpet underlay, you will notice a significant reduction in the noise inside your home.

2. Offers Ultimate Comfort

There is a difference between comfort and ultimate comfort. You see, a carpet is soft and comfortable to step on – there’s no doubt about that. But the best carpet underlay adds additional cushioning, making your carpet feel plusher and ultimately comfier.

3.Thermal Insulation

The best carpet underlay adds extra insulation to ensure a cosy and toasty room. This insulation helps to maintain a constant average temperature, which brings a significant reduction in your energy bills. However, not all carpet underlays offer the same level of thermal insulation.

The best carpet underlay for heat insulation should have a minimum tog rating of 2.5. This rating depends on the density, thickness, and material of your underlay.

However, if you have underfloor heating, a thick underlay with a higher tog rating may interfere with your usual heating. In that case, a thinner underlay with a lower rating is ideal.

4.Your Carpet Will Last Longer

Your carpet will not only feel softer but will look new and last longer. The underlay also acts as a shock absorber, which protects your floor against damage by furniture.

5.Easier to Dust and Clean your Carpet

A carpet underlay protects your carpet, making it easier to dust and clean.

Key Features of the Best Carpet Underlay

Here are the key features you need to consider when picking the best carpet underlay.

1.Material

Some of the most commonly used materials in making carpet underlays are rubber and foam. But which is the better option?

Because rubber is heavier and denser than foam, it is often cumbersome to move around. But if you are searching for a light and easy to maintain carpet underlay, foam underlays are your best pick.

Other carpet underlays are made of felt. Felt contains large amounts of wool, making them perfect for noise reduction. On the downsides, they get soggy quickly and are not ideal for families with pets or kids.

2.Thickness

Carpet underlays come in all sizes and thickness. As a rule of thumb, go for a carpet underlay with a thickness of between 10mm to 12mm. These offer ultimate comfort and are easier to clean.

But there is an exception. The best carpet underlays for stairs should be thinner, at around 9mm. Thinner underlays fit more flawlessly on the stairs without elevating your carpet.

3.Tog Rating

The tog rating refers to the level of heat insulation a carpet underlay provides. This rating is usually determined by the density, composition, and thickness of your underlay. Most carpet underlays have a tog rating of 1.0 to 4.0. And the higher the rating, the better the insulation levels.

Although underlays with a high tog rating offer better thermal insulation, especially during winter, they may not be the best pick for every home. Some homes rely on underfloor heating, and thick underlays may reduce the heating system’s efficiency.

Thus, if your home has underfloor heating, choose underlays with a lower tog rating. Also, ensure that your choice of a carpet underlay is compatible with the high temperatures of underfloor heating. Most homeowners who rely on underfloor heating prefer to use underlays rated less than 1. Underlays with a rating above 2.5 are best for heat insulation.

How Much Should You Pay for the Best Carpet Underlay?

A prevalent yet costly mistake many people make is investing in a premium carpet only to pair it with the cheapest carpet underlay available. These budget options can cost as low as £2 per metre squared. However, they do not offer enough protection to your carpet, and your carpet will not last as long as it should.

Premium carpet underlays will cost as much as £10 per metre squared. But you can still get an excellent underlay at approximately £4 per metre squared

Types of Carpet Underlays

There are three main types of carpet underlays, and each has its advantages and disadvantages. The best one for you will, of course, depend on your individual needs and preferences.

  1. PU Foam

PU foam is the most popular type of carpet underlay. Many homeowners prefer this material because it is an excellent heat insulator that is versatile and ideal for a wide range of flooring. What’s more, PU foam carpets are made of recycled foam, making them kinder to the environment.

PU foam carpet underlays are also plush and come in various thicknesses to suit all your needs. Foam is also relatively light, and is the easiest carpet underlay to maintain.

Advantages of PU Foam:

  • Provides excellent heat insulation
  • Environmentally friendly
  • Versatile and are available in various thicknesses
  • Feels soft on the foot

Disadvantages of PU Foam:

  • Flattens over time
  • Aren’t resistant to furniture markings
  1. Rubber

Are you searching for the best carpet underlay for noise reduction? Rubber is a great pick. That’s because rubber underlays are dense and thick, which makes them excellent in minimizing noise transfer. Rubber underlays are also great at protecting your floor against any marks or damage by furniture because of their thickness. There are two main types of rubber:

Sponge rubber is available either in flat or waffle patterns. However, waffle patterns flatten faster than flat designs.

Advantages of sponge rubber:

  • Relatively soft underfoot (though not as plush as rubber)
  • Firm

Disadvantages of sponge rubber:

  • Cheap options may flatten or disintegrate after some time
  • Although flat patterns are often durable, waffle rubber flattens easily

Crumb rubber is an environmentally friendly carpet underlay made of recycled tyres. The underlay is extremely firm and offers excellent protection to your carpet, making it perfect for high traffic areas.

Advantages of crumb rubber:

  • Extremely firm
  • Great noise reduction power
  • Not easily damaged by furniture marks
  • Environmentally friendly

Disadvantages of crumb rubber:

  • Because of its high density, the underlay often makes the carpet feel hard
  1. Felt

Another excellent carpet underlay for thermal insulation is felt. These carpet underlays are mainly made out of wool, which has impressive sound absorption power. They also have excellent retention.

On the flip side, felt carpet underlays also absorb liquids quickly. If you have pets or small kids around, they might not be your best choice.

Advantages of Felt:

  • Very firm
  • Great thermal insulation
  • Not easily damaged by furniture

Disadvantages of Felt:

  • Doesn’t feel as soft on the feet as the other types
best carpet underlay blue

What is the Best Type of Carpet Underlay?

There are three main types of carpet underlays to pick from: felt, rubber, and PU foam. But of the three, which one is the best carpet underlay?

PU foam is the most popular choice for most homes. It is environmentally friendly, versatile, and gives a plush underfoot. These underlays are also available in different thicknesses, making them ideal for a wide range of flooring. PU foam carpet underlays also act as excellent heat insulators.

After intensive research and several considerations of the reliability and performance, we settled on the Luxury Thick PU Carpet Underlay Rolls as the best carpet underlay. It is an environmentally friendly PU Foam underlay that is thick and provides soft underfoot.

What is the Best Carpet Underlay for Noise Reduction?

The best carpet underlay for noise reduction depends on its tog ratio. Tog ratio refers to the level of insulation a carpet underlay offers and is determined by its density, composition, and thickness. Ideally, the tog ratio of most underlays lies between 1 and 4. And the higher the number, the better the insulation.

Our pick of the best carpet underlay for noise reduction is the Flooring Online UK Spring PU Foam Carpet Underlay. It is 12mm thick with a tog ratio of approximately 3.3. And the best part? It reduces noise in your home by about 43db. You will notice the difference.

What is the Best Carpet Underlay for Concrete Floors?

Concrete can get cold and damp, especially during cold weather. Therefore, not every kind of carpet underlay will work well with concrete floors. You need an underlay that is thick and has excellent thermal insulation. Ideally, it should have a tog rating above 2.5 – but the higher the rating, the better.

Our top pick of the best carpet underlay for concrete floors is the Plushwalk Carpet Underlay. It has a 12mm thickness and a tog rating of about 3.3. That makes it excellent in thermal insulation. On top of that, it is a luxurious carpet underlay that is durable and feels super-soft underfoot.

Is Felt Underlay any Good? 

There are three popular types of carpet underlays: felt, PU foam, and rubber. PU foam is the favourite for most because of its versatility and easy maintenance. Rubber, on the other hand, is durable and is not damaged by furniture. But, is felt underlay any good?

Felt mostly comprises wool, which is an excellent thermal insulator. On top of that, wool is well-known for its heat retention. The underlay is also excellent at noise reduction and is not easily damaged by furniture. But on the downside, felt doesn’t feel as soft as PU Foam. Plus, it gets damp quickly and is not ideal for use around pets and kids.

Do you Need Underlay for Bedroom Carpets?

A carpet underlay has many benefits. It helps to deaden airborne noise, protect your carpet, and provide thermal insulation in your room. The above benefits only emphasize the need for underlay for bedroom carpets.

Your bedroom will be toasty and quiet. And your carpet will feel soft and last longer.

Is Thick Carpet Underlay Better?

Thickness is one of the essential factors you must have in mind when you’re searching for the best carpet underlay. A thicker carpet underlay will provide better cushioning, excellent heat insulation, and better soundproofing. However, a thick carpet may not be ideal in all circumstances.

For instance, although a stairway is a high traffic area, the best carpet underlay should be thinner than your dining room (which is an equally high traffic area). That’s because thicker underlays on the stairs are likely to elevate your carpet, and it won’t fit as it should.

What Thickness Carpet Should I Use?

There are many upcoming and established brands specialising in manufacturing the best carpet underlays in the market. Below we’ll have a closer look at the top 3. 

  • T & A Upholstery supplies ltd opened its door in the early 80s. Back then, it was only supplying industrial foam, including top-notch and affordable PU foam carpet underlays. But the company has now diversified to become the leading supplier of Artificial Grass in the UK. 
  • Buy Flooring Online is another top manufacturer and supplier of top quality carpets and carpet underlays of all kinds.  Other than rugs, and underlays, Buy Flooring Online also supplies other products such as metal door bars, pipe covers, beadings, metal door bars, laminates, and more.
  • Plushwalk is your one-stop-shop for all your luxurious underlays that will enhance your carpet from just average to an elegant and spongy feel underfoot. Its carpet underlays are available in 8mm, 10mm, and 12mm. 

Best Carpet Underlay Brands

There are many upcoming and established brands specialising inn manufacturing the best carpet underlays in the market. Below we’ll have a closer look at the top 3. 

  1. T & A Upholstery supplies ltd, opened its door in the early 80’s . Back then, it was only supplying industrial foam, including top notch and affordable PU foam carpet underlays. Currently, the company has now diversified to become the leading supplier of Artificial Grass in the UK. 
  2. Buy Flooring Online is another top manufacturer and supplier of top quality carpets and carpet underlays of all kinds.  Other than carpets, and underlays, Buy Flooring Online also supplies other products such as metal door bars, pipe covers, beadings, metal door bars, laminates, and more. 
  3. Plushwalk is your one-stop shop for all your luxurious underlays that will enhance your carpet from just normal to a luxurious and spongy feel underfoot. Its carpet underlays are available in 8mm, 10mm, and 12mm. 

So...Which Carpet Underlay Should I Buy?

The best carpet underlay should be thick and durable. Its heat and thermal insulation, too, should be excellent. Most  underlays are either made out of PU foam, rubber, or felt, but foam is the most popular. 

In the above review, we’ve reviewed 7 of the best carpet underlays out there. There are available in various thicknesses and price ranges.

The T & A Upholstery Thick PU Carpet Underlay is our favourite pick. It has a tog rating of 2.71, which offers a great insulation. Plus, it is only 10mm and you can install it in any carpeted area of your home.

 

If you have the resources to invest in a luxury carpet underlay, we recommend the Plushwalk Carpet Underlay. It has an impressive tog rating of 3.3, is 12mm thick, and reduces impact noise by a whooping 47db.    Finally, the HEQUN multipurpose anti-slip carpet is the best pick for budget buyers. It is durable, anti-slip, and tear resistant. 

If you’re pulling up your old flooring then now is the perfect time to refresh your woodwork. Check our our guide to the best gloss paints here!

Hannah

Hannah is an extremely well-experienced home product tester. She has been crafting product roundups and other informational articles for over five years. As a mother of one who loves her work’s freedom, Hannah dedicates most of her day to freelance writing. Hannah loves to spend time with her family in her free time, read, hike, or Netflix and chill.

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