10 Best Under Carpet Insulation in The UK

Last updated on 01/07/2025

Advertising disclosure

Best Choice

9.8

Exceptional

Flooring Online UK

10mm Thick - Wool Heat Insulation Felt Carpet Underlay - 42oz

Why We Love It

Ultra-warm and comforting underfoot experience.
Remarkable heat insulation properties.
Environmentally friendly yet luxurious.

Main Highlights

10mm Thick - 42oz Wool Underlay
15sq.metres Per Roll
High Heat Insulation
Warm Underfoot
Eco Friendly

12mm Thick PU Carpet Underlay - 15 Square Meter Rolls - UK Manufactured Quality Feel - Hard Wearing

Why We Love It

Enhances comfort with thickness.
Durable and long lasting.
UK manufactured quality.

Main Highlights

12mm Thick PU Carpet Underlay - 15 Square Meter Rolls - UK Manufactured Quality Feel - Hard Wearing
product type: HOME
Brand: SIXNEA

12mm Thick PU Foam Carpet Underlay Luxurious Comfort Soft, Durable & Stain-Resistant Great Heat & Sound Insulation Eco-Friendly Ideal for Bedrooms & Living Rooms (Roll 10 Square Meter)

Why We Love It

Superior sound and heat insulation.
Luxurious comfort underfoot.
User-friendly and easy installation.

Main Highlights

✅QUALITY UNDERLAY: The PU under the carpet boasts impeccable craftsmanship, durable materials, and a luxurious feel, guaranteeing excellent quality and a lasting addition to any space. Excellent heat and sound insulation properties.
✅PERFECT UNDERLAY: This 12mm thick premium blue PU carpet underlay perfect for use, in all areas of the home, including bedrooms, living rooms, Dining Rooms and Hallways. Tog Rating 2.14 and DB Rating 34DB.
✅FEEL COMFORTABLE: The soft, luxurious feel Premium Polyurethane PU foam carpet feel soft underfoot makes every step a delight, creating a cozy and inviting ambiance, ensuring you feel comfortable and at home. It’s very comfortable to walk on and easy to lay.
✅EASY TO USE: With its user-friendly design and simple installation process, the PU carpet ensures ease of use, making it a hassle-free and convenient choice for any setting. Feel great under foot and so easy to lay.
✅SIZE: 12mm Thick Acoustic Pu Underlay carpet vinyl flooring underlayment padding Roll is 734 CM X 137CM = 10SQM 12mm Density 90 kg/cubic meter Non-woven backing both sides for extra durability and life span.

10mm Thick PU Foam Carpet Underlay Luxurious Comfort Soft, Durable & Stain-Resistant Great Heat & Sound Insulation Eco-Friendly Ideal for Bedrooms & Living Rooms (Roll 10 Square Meter)

Why We Love It

Exceptional quality and durability.
Luxurious feel underfoot.
Easy to install and use.

Main Highlights

✅QUALITY UNDERLAY: The PU under the carpet boasts impeccable craftsmanship, durable materials, and a luxurious feel, guaranteeing excellent quality and a lasting addition to any space. Excellent heat and sound insulation properties.
✅PERFECT UNDERLAY: This 10mm thick premium green PU carpet underlay perfect for use, in all areas of the home, including bedrooms, living rooms, Dining Rooms and Hallways. Tog Rating 2.14 and DB Rating 34DB.
✅FEEL COMFORTABLE: The soft, luxurious feel Premium Polyurethane PU foam carpet feel soft underfoot makes every step a delight, creating a cozy and inviting ambiance, ensuring you feel comfortable and at home. It’s very comfortable to walk on and easy to lay.
✅EASY TO USE: With its user-friendly design and simple installation process, the PU carpet ensures ease of use, making it a hassle-free and convenient choice for any setting. Feel great under foot and so easy to lay.
✅SIZE: 10mm Thick Acoustic Pu Underlay carpet vinyl flooring underlayment padding Roll is 734 CM X 137CM = 10SQM 10mm Density 85 kg/cubic meter Non-woven backing both sides for extra durability and life span.

IMPERIAL STUDIOS Luxury Carpet Underlay Roll - 15m2 PU Foam Underlayment & 12mm Thick - Non-Skid Gripper for Carpeted Floor - Thermal & Sound Insulation - Durable, Cushioned - Blue Color

Why We Love It

Premium cushioning and support.
Superior durability and resilience.
Environmentally friendly materials used.

Main Highlights

✅ PREMIUM THICKNESS: These carpet underlay rolls boast a generous 12mm thickness, providing exceptional cushioning and support underfoot. This thickness ensures maximum comfort and helps prolong the lifespan of your carpets by reducing wear and tear.
✅ HIGH-QUALITY PU MATERIAL: Underlay laminate flooring is crafted from premium polyurethane (PU) foam, these underlay rolls offer superior durability and resilience. The PU material is known for its long-lasting performance, excellent insulation properties, and resistance to compression, ensuring reliable support for your carpets over time with Damp Proof Membrane.
✅ ENVIRONMENTALLY FRIENDLY: Made from eco-friendly materials, these underlay rolls are a sustainable choice for your home. The PU foam is manufactured using environmentally responsible processes, minimizing environmental impact. By choosing this product, you can enjoy the benefits of superior carpet support while reducing your carbon footprint.
✅ SOUND AND HEAT INSULATION: Experience enhanced sound and heat insulation with these Memory Foam underlay rolls. The dense PU foam construction effectively absorbs impact noise, reducing sound transmission between floors. Additionally, it helps to retain warmth, creating a cozy and comfortable atmosphere in your living spaces.
✅ EASY INSTALLATION AND CUSTOMIZATION: Designed for hassle-free installation, these underlay rolls can be easily trimmed to fit any room size or shape. Whether you're covering a small area or a large space, you can effortlessly customize the underlay to achieve a perfect fit. This convenience saves time and effort during the installation process.

Carpet Underlay - 11mm Thick - High-Density PU Foam Insulation Roll 53.82 ft² (5 m²) - Soft and Comfortable Foam Underlay for Bedroom, Living Room, Stairs - Heat & Sound Insulation

Why We Love It

Luxurious comfort beneath your feet.
Effective noise reduction capabilities.
Thermal insulation for cozy warmth.

Main Highlights

Luxurious Comfort Underfoot: Transform your living spaces with this premium 11mm thick carpet underlay, designed to enhance the softness and feel of your carpets, creating a plush and cozy surface. Ideal for living rooms, bedrooms, and kids' playrooms, our flooring underlay is the ideal solution to add a touch of luxury and unmatched comfort to any room in your home.
Effective Noise Reduction: Create a quieter, more serene home with this high-performance carpet underlay, delivering an outstanding 44dB impact sound reduction. Ideal for minimizing noise transfer between floors and on stairs, it’s the perfect solution for multi-level homes, home offices, and busy areas.
Thermal Insulation for Warmth: Create a warm and inviting atmosphere in your home with this high-quality thermal underlay. Featuring an impressive 3.13 tog rating, it effectively retains heat, keeping your floors cozy and comfortable even during colder months.Great for improving energy efficiency, it helps reduce heating costs while enhancing the overall comfort of your living spaces.
Easy DIY Installation: Each roll measures 162.21 ft² (15.07m²), with dimensions 4.5 x 36.08 feet (1.37m x 11.0m). This floor underlay is designed for effortless use, making it simple to cut and install. Best or DIY projects, it saves time and eliminates the need for professional assistance.
Affordable and Reliable: This foam underlay combines premium quality with affordability, delivering exceptional value for your flooring needs. Made from high-density polyurethane (PU) foam with a 110 kg/m³ density, it is designed to be both durable and long-lasting. Its robust construction ensures it’s a practical, cost-effective choice for any flooring upgrade.

Graphite Budget Carpet Underlay 7mm Thick PE Foam Superior Comfort, Sound & Thermal Insulation 14.4sqm Rolls

Why We Love It

Enhanced comfort for every step.
Superior sound insulation guaranteed.
Durable and long-lasting performance.

Main Highlights

✅ ENHANCED COMFORT & SUPPORT: 7mm thick PE foam provides a plush underfoot feel, adding extra comfort to your carpet.
✅ SUPERIOR SOUND INSULATION: Effectively reduces noise transmission, making it perfect for multi-story homes and commercial spaces.
✅ THERMAL INSULATION: Helps maintain room temperature and can contribute to energy savings by providing a thermal barrier.
✅ MOISTURE BARRIER PROTECTION: Prevents dampness from seeping through from the subfloor, protecting your carpet and prolonging its life.
✅ DURABLE & LONG-LASTING: Made from high-quality PE foam, this underlay is designed to withstand daily wear and tear, ensuring lasting performance.
✅ EASY INSTALLATION: Lightweight and easy to handle, ideal for both DIY enthusiasts and professional installers.

IMPERIAL STUDIOS Carpet Underlay - 5m2 PU Memory Foam, 12mm Thick - Anti-Skid Gripper for Carpets - Soft, Cushioned Underlayments - Heat & Sound Insulation - Blue Color

Why We Love It

Quality craftsmanship ensures longevity.
Adds comfort to every step.
Effortless installation process.

Main Highlights

✅QUALITY UNDERLAY: The PU under the carpet boasts impeccable craftsmanship, durable materials, and a luxurious feel, guaranteeing excellent quality and a lasting addition to any space. Excellent heat and sound insulation properties.
✅PERFECT UNDERLAY: This 12mm thick premium blue PU carpet underlay perfect for use, in all areas of the home, including bedrooms, living rooms, Dining Rooms and Hallways. Tog Rating 2.14 and DB Rating 34DB.
✅FEEL COMFORTABLE: The soft, luxurious feel Premium Polyurethane PU foam carpet feel soft underfoot makes every step a delight, creating a cozy and inviting ambiance, ensuring you feel comfortable and at home. It’s very comfortable to walk on and easy to lay.
✅EASY TO USE: With its user-friendly design and simple installation process, the PU carpet ensures ease of use, making it a hassle-free and convenient choice for any setting. Feel great under foot and so easy to lay.
✅SIZE: 12mm Thick Acoustic Pu Underlay carpet vinyl flooring underlayment padding Roll is 364CM X 137CM = 5 SQM 12mm Density 90 kg/cubic meter Non-woven backing both sides for extra durability and life span.

9mm Thick High Density PU Foam Carpet PowerWalk Underlay Luxurious Comfort Soft, Durable & Stain-Resistant Great Heat & Sound Insulation Eco-Friendly Ideal for Bedrooms & Living Rooms (5㎡)

Why We Love It

High-density, quality construction.
Excellent heat, sound insulation.
Soft, luxurious underfoot feel.

Main Highlights

✅HIGH DENSITY UNDERLAY: The High density PU foam under the carpet boasts impeccable craftsmanship, durable materials, and a luxurious feel, guaranteeing excellent quality and a lasting addition to any space. Excellent heat and sound insulation properties.
✅PERFECT UNDERLAY: This 9mm thick premium blue PU carpet underlay perfect for use, in all areas of the home, including bedrooms, living rooms, Dining Rooms and Hallways. Tog Rating 2.30 and DB Rating 38DB.
✅FEEL COMFORTABLE: The soft, luxurious feel Premium Polyurethane HD PU foam carpet feel soft underfoot makes every step a delight, creating a cozy and inviting ambiance, ensuring you feel comfortable and at home. It’s very comfortable to walk on and easy to lay.
✅EASY TO USE: With its user-friendly design and simple installation process, the PU carpet ensures ease of use, making it a hassle-free and convenient choice for any setting. Feel great under foot and so easy to lay.
✅SIZE: 9mm high density PU foam underlay Thick Acoustic Pu Underlay carpet vinyl flooring underlayment padding Roll is 364CM X 137CM = 5 SQM 9mm Density 130 kg/cubic meter Non-woven backing both sides for extra durability and life span.

IMPERIAL STUDIOS Anti-Skid Carpet Underlay - 15m2 PU Roll, 7mm Thick - Stain Resistant Carpet Padding for Bedrooms & Living Areas - Sound Deadening & Insulated Gripper for Rugs & Carpets- Yellow Color

Why We Love It

Impeccable craftsmanship and durable materials.
Luxurious feel and sound insulation.
Simple installation and user-friendly.

Main Highlights

✅QUALITY UNDERLAY: The PU under the carpet boasts impeccable craftsmanship, durable materials, and a luxurious feel, guaranteeing excellent quality and a lasting addition to any space. Excellent heat and sound insulation properties.
✅PERFECT UNDERLAY: This 7mm thick premium yellow PU carpet underlay perfect for use, in all areas of the home, including bedrooms, living rooms, Dining Rooms and Hallways. Tog Rating 2.14 and DB Rating 34DB.
✅EASY TO USE: With its user-friendly design and simple installation process, the PU carpet ensures ease of use, making it a hassle-free and convenient choice for any setting. Feel great under foot and so easy to lay.
✅EASY TO USE: With its user-friendly design and simple installation process, the PU carpet ensures ease of use, making it a hassle-free and convenient choice for any setting. Feel great under foot and so easy to lay.
✅SIZE: 7mm Thick Acoustic Pu Underlay carpet vinyl flooring underlayment padding Roll is 1092CM X 137CM X 07MM = 15 SQM 7mm Density 75 kg/cubic meter Non-woven backing both sides for extra durability and life span.

8.8

Excellent

We scanned 897 products

We reviewed these offers relevant to the Under Carpet Insulation within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Flooring Online UK, SIXNEA, IMPERIAL STUDIOS, NOVECRAFTO, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Under Carpet Insulation in the market, we considered we took a deep dive into 4486 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is 10mm Thick - Wool Heat Insulation Felt Carpet Underlay - 42oz. We love many things about this product by Flooring Online UK. What sets it apart from the competition is Ultra-warm and comforting underfoot experience. , Remarkable heat insulation properties. , Environmentally friendly yet luxurious.
The best value product for most shoppers and where user satisfaction is continuously the highest is 12mm Thick PU Carpet Underlay - 15 Square Meter Rolls - UK Manufactured Quality Feel - Hard Wearing by SIXNEA based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Under Carpet Insulation and the best cost-to-value ratio is IMPERIAL STUDIOS Anti-Skid Carpet Underlay - 15m2 PU Roll, 7mm Thick - Stain Resistant Carpet Padding for Bedrooms & Living Areas - Sound Deadening & Insulated Gripper for Rugs & Carpets- Yellow Colorat IMPERIAL STUDIOS with a % discount.
Our list of the best Under Carpet Insulation is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Under Carpet Insulation in The UK

Related Deals You Might Like for Under Carpet Insulation

8mm Thick PU Foam Carpet Underlay Luxurious Comfort Soft, Durable & Stain-Resistant Great Heat & Sound Insulation Eco-Friendly Ideal for Bedrooms & Living Rooms (Roll 5 Square Meter)

2mm White Foam Underlay for Any Laminate / Real Wood Flooring - 1m x 15m (15m2 Roll Size) - Acoustic / Insulation Underlay by KK

Carpet Underlay PU Foam 8mm 10mm 12mm Multiple (8mm Thick - 5m2)

7mm Thick PU Foam Carpet Underlay Luxurious Comfort Soft, Durable & Stain-Resistant Great Heat & Sound Insulation Eco-Friendly Ideal for Bedrooms & Living Rooms (Roll 10 Square Meter)

FloorPro 8mm Carpet Underlay - DIY Roll 1m x 5m - PU Foam With Sound And Insulation - Underfoot Comfort Cushion Padding Underlayment - Ideal For Stairs

8mm Thick PU Foam Carpet Underlay Luxurious Comfort Soft, Durable & Stain-Resistant Great Heat & Sound Insulation Eco-Friendly Ideal for Bedrooms & Living Rooms (Roll 10 Square Meter)

Advanced Acoustics Premium Mass Loaded Vinyl Soundproofing Mat - 1.25m x 3m - 5kg/sqm - 2mm Thin

2mm White Foam Underlay for Any Laminate / Real Wood Flooring - 1m x 15m (15m2 Roll Size) - Acoustic / Insulation Underlay by FloorPro®

MAIYADUO Anti Slip Rug Underlay 100x150 Cm Multipurpose Non Slip Mat Under Rug Gripper Anti Slip Mat Antislippery Mat Underlay Liner for Smooth Hard Wooden Floors

We scanned 897 products

We concluded that: