Soundproofing Acoustic Underlay 3mm 94% Recycled Rubber 54dB

3mm Premium Acoustic Underlayment — 94% Recycled Rubber, Up to 54 dB Sound Proofing, Slim & Effective Floor Protection

SilentCloud 3 mm Acoustic Underlay
SilentCloud 3 mm is a high-performance, low-profile acoustic underlay manufactured from 94% recycled rubber. Despite its slim build, it delivers impact sound insulation of up to 54 dB in site testing, outperforming many conventional thin mats.

This underlay is engineered for projects where floor height is critical but acoustic performance cannot be compromised. Designed for use beneath ceramic tile, porcelain, stone, vinyl planks/tiles, LVT, and wood flooring, SilentCloud 3 mm provides both sound reduction and substrate protection, making it ideal for renovations, refurbishments, and new builds with restricted build-up heights.

Key Features & Benefits

• Up to 54 dB impact sound reduction (site tested; performance varies by subfloor and installation method)

• Airborne sound insulation up to 50–54 dB, exceeding typical thin underlay performance

• High-density formulation (~950 kg/m³) delivers more mass than standard 3 mm mats

• Weight per m² ~2.9 kg provides superior acoustic control compared with conventional 2.2–2.5 kg/m² products

• Slim 3 mm profile, ideal for refurbishments and projects with limited floor height

• Moisture, mould, and bacteria resistant for long-term durability

• Eco-friendly – made from 94% recycled rubber; contributes to LEED® credits

• Durable and load-resistant, suitable for demanding residential and commercial environments

• Supplied in 10 m rolls for efficient installation

• Fully CE marked and UK Building Regulations Part E compliant

Applications

• Concrete, timber, and steel subfloors

• Residential apartments, condos, and refurbishments

• Hotels, offices, and mixed-use developments

• Retail and education facilities

• Home gyms, studios, and cinemas where space is limited but acoustic control is required

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Installation & ordering

For full‑floor installations, order one continuous roll rather than multiple short lengths to minimise seams.

Need help with installation or choosing the right length? Our technical team can advise on sub‑floor preparation and acoustic performance. We offer free UK shipping from our local warehouse and trade discounts for larger orders.

Soundproofing Acoustic Underlay 3mm — Why It Outperforms the Rest

Our soundproofing acoustic underlay 3mm is engineered from 94% recycled rubber, delivering genuine acoustic performance in the slimmest possible profile. At just 3mm thick, it achieves an impressive 54dB impact noise reduction — making it one of the most effective thin soundproofing underlays available in the UK. Whether you're fitting laminate, engineered wood, or LVT flooring, this underlay works silently beneath the surface to create a noticeably quieter living space.

Unlike foam-based alternatives, recycled rubber provides a dense, resilient barrier that doesn't compress over time, maintaining its soundproofing effectiveness for the life of your floor. Choosing the right soundproofing underlay at the start of your project is one of the most impactful decisions you can make — and this product consistently delivers.

Best Acoustic Underlay for Laminate Flooring — Slim Profile, Maximum Performance

Looking for the best acoustic underlay for laminate flooring that won't raise your floor height too much? This 3mm recycled rubber underlay is the ideal choice. Many properties — particularly in conversions and flats — have strict tolerances on how much height can be added under a new floor. At 3mm, this underlay adds minimal height while still delivering 54dB of impact noise reduction.

Its rubber composition provides excellent grip and stability for laminate planks, preventing movement, squeaking, and edge-lifting. Combined with its moisture-resistant surface, it's a premium yet practical choice for kitchens, hallways, and living areas where a slim acoustic solution is essential.

Soundproof Underlay Part E — Does This Product Comply?

Yes — this soundproof underlay Part E compliant product meets the acoustic standards set out in Approved Document E of the UK Building Regulations. Part E requires that floors in converted flats and new-build properties achieve minimum airborne and impact sound insulation levels to protect occupants from noise disturbance.

This 3mm acoustic rubber underlay has been independently tested and achieves 54dB impact noise reduction, well within the performance range required for most Part E compliant floor systems. It is commonly used in acoustic flooring assemblies for residential conversions, flats, and houses in multiple occupation (HMOs). For full Part E compliance, the underlay should be used as part of a complete flooring system as specified by your acoustic consultant or building control officer.

Sound Deadening Underlay for Floors — How Recycled Rubber Works

When it comes to sound deadening underlay for floors, recycled rubber is widely regarded as the most effective material available. The dense, irregular cell structure of recycled rubber absorbs and dissipates impact energy — such as footsteps, dropped objects, and furniture movement — before it can travel through the floor construction and become airborne noise in the room below.

This 3mm underlay acts as a decoupling layer between your hard floor finish and the subfloor, breaking the direct contact that would otherwise allow vibration to pass freely. The result is a measurable reduction in structure-borne noise, creating quieter, more comfortable spaces — particularly important in flats, apartments, and any property where acoustic performance between floors is critical.

Impact Noise Reduction Underlay UK — Technical Specification

This impact noise reduction underlay UK product offers the following performance characteristics:

• Thickness: 3mm
• Impact noise reduction: Up to 54dB (site tested)
• Material: 94% recycled rubber granules, bonded composite
• Suitable for: Laminate, engineered wood, LVT, hardwood flooring
• Building Regulations: Part E compliant acoustic system
• Eco credentials: 94% recycled rubber — sustainable, low-carbon product
• Moisture resistance: Suitable for use on concrete and timber subfloors
• Underfloor heating compatible: Yes, suitable for use with UFH systems
• Origin: UK stocked, fast UK delivery

For properties where floor height is a constraint but acoustic performance cannot be compromised, this 3mm soundproofing underlay is the recommended solution. It is particularly popular in flat conversions, HMOs, and modern residential developments where thin-profile acoustic products are essential.

Frequently Asked Questions

Does this soundproofing underlay meet Building Regulations Part E?

Yes. This 3mm recycled rubber acoustic underlay achieves 54dB impact noise reduction and is suitable for use in Part E compliant flooring assemblies. It is tested to meet the performance thresholds required by Approved Document E for floors in converted flats and new-build residential properties. We recommend confirming the full system specification with your acoustic consultant or building control officer.

What is the difference between 3mm and 6mm acoustic underlay?

The main differences are thickness, height gain, and acoustic performance. Our 3mm acoustic underlay is ideal where floor height is limited — it adds minimal height while still delivering 54dB of impact noise reduction. Our 6mm option provides an enhanced 74dB rating and is better suited to properties where maximum acoustic performance is the priority and a small increase in floor height is acceptable. For most flat conversions, the 3mm is the preferred choice due to its slim profile.

Is this the best acoustic rubber underlay for flats?

For properties where floor height is restricted, yes — this 3mm recycled rubber underlay is one of the best acoustic underlays for flats available in the UK. Its 54dB impact noise rating, combined with its slim 3mm profile, makes it ideal for conversions and apartments. The 94% recycled rubber composition also provides long-term durability, ensuring the acoustic performance doesn't degrade over time as foam underlays can.

How much acoustic underlay do I need?

To calculate how much underlay you need, simply measure the length and width of your room in metres and multiply them together to get your total area in square metres. Add 10% for wastage from cuts around door frames, alcoves, and fitted furniture. Our underlay is available in rolls of varying sizes — select the option closest to your required area and you can always trim excess with a sharp knife or scissors on site.

Is this underlay compatible with underfloor heating systems?

Yes — this 3mm recycled rubber soundproofing underlay is compatible with electric and water-fed underfloor heating (UFH) systems. Its low thermal resistance ensures that heat from your UFH system passes efficiently through to the floor surface, maintaining heating performance while still providing excellent acoustic insulation. This makes it an ideal choice for modern open-plan properties where underfloor heating and acoustic performance are both priorities.