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Description
The UK's #1 Acoustic Cork & Rubber Floor Underlay — Superior Soundproofing for Every Floor Type
The SilentCloud Acoustic Cork Rubber Underlay is the professional-grade sound deadening solution trusted by architects, contractors, and homeowners across the UK. Engineered from a premium blend of recycled rubber, natural cork, and polymer binder, this underlay delivers outstanding impact noise reduction, airborne sound absorption, and thermal insulation — all in a single, easy-to-install roll.
Whether you're laying engineered wood, LVT, laminate, vinyl, carpet, or ceramic tiles, SilentCloud provides the acoustic performance needed to meet Building Regulations Part E and Document E compliance in both residential and commercial builds.
Why SilentCloud Outperforms Every Other Underlay on the Market
- Exceptional Impact Sound Reduction (ΔLw): Significantly reduces footfall, impact, and airborne noise transmission between floors — ideal for flats, apartments, offices, and commercial premises.
- Document E & Building Regs Compliant: Meets UK building regulations for acoustic performance in both new-build and refurbishment projects.
- 100% Recycled & Eco-Friendly: Made from waste rubber and natural cork — a sustainable, low-carbon choice that doesn't compromise on performance.
- Underfloor Heating Compatible: Low thermal resistance ensures maximum heat transfer efficiency — your UFH system works harder, not against your underlay.
- Remains Elastic for Life: Unlike foam underlays that compress and fail, SilentCloud maintains its resilience permanently, protecting your floor investment long-term.
- Suitable for Concrete & Screed Subfloors: Minimal construction height (3mm or 4.5mm) makes it the go-to choice where floor height is critical.
- Fire Resistant: Provides an additional layer of fire safety — essential for commercial, healthcare, and educational environments.
- Reduces Footfall Noise: Creates a noticeably quieter living and working environment — reduce complaints in HMOs, apartments, offices, and hotels.
Technical Specifications
- Roll Size: 20m × 1m (20m² per roll)
- Thickness Options: 3mm | 4.5mm
- M² Weight: 3mm = 2.05 kg/m² | 4.5mm = 3.62 kg/m²
- Composition: Recycled rubber, natural cork, polymer binder
- Colour: Black/Beige
- Surface Texture: Fine Granulate
- Tensile Strength: 0.6 N/mm² (DIN 53571)
- Elongation at Break: 80% (DIN 53571)
- Compression Set: Max. 10% at 0.02 N/mm² (DIN 53572)
- Compressibility: Max. 15% at 0.02 N/mm² (DIN 53572)
- Water Absorption: Max. 2% (DIN 53428)
- Compliance: Document E | Building Regulations Part E | DIN Standards
Where Can SilentCloud Be Used?
Residential: Apartments, flats, houses, HMOs, loft conversions, and extensions. Ideal under engineered wood, laminate, LVT, vinyl, and carpet to dramatically reduce noise between floors and rooms.
Commercial: Offices, hotels, restaurants, retail units, and co-working spaces where a quiet environment drives productivity, customer satisfaction, and regulatory compliance.
Healthcare & Education: Hospitals, GP surgeries, clinics, schools, colleges, and universities where acoustic comfort is critical for patient wellbeing and learning outcomes.
New Build & Refurbishment: Approved for use in both new construction and retrofit projects, meeting the acoustic requirements demanded by building control and housing associations.
Compatible Floor Finishes
SilentCloud Acoustic Cork Rubber Underlay works seamlessly under: engineered hardwood, solid wood (floating), laminate, LVT / luxury vinyl tile, vinyl plank, carpet, ceramic and porcelain tiles, and resin floors.
Easy Installation — Professional Results
Simply roll out, butt-join the edges (no overlap), and lay your chosen floor finish on top. No specialist tools or adhesives required for most installations. The underlay remains flat, stable, and resilient throughout the full lifespan of your floor. Full installation guidance included with every order.
Frequently Asked Questions
Is this underlay suitable for underfloor heating?
Yes. SilentCloud has excellent thermal conductivity properties, making it fully compatible with wet and electric underfloor heating systems without compromising performance.
Does it meet UK Building Regulations Part E?
Yes. SilentCloud is Document E compliant and suitable for use in all new-build and conversion projects requiring acoustic performance certification.
Which thickness should I choose?
3mm is ideal where floor height is limited or for underfloor heating installations. 4.5mm provides superior acoustic and thermal performance and is recommended for maximum noise reduction in multi-occupancy buildings.
Can it be used under tiles?
Yes. The rigid yet resilient composition of SilentCloud makes it suitable for use as an underlayment beneath ceramic and porcelain tiles with appropriate adhesive.
Is it environmentally friendly?
Absolutely. SilentCloud is manufactured from 100% recycled rubber and natural cork — a genuinely sustainable product with full environmental credentials.
Order Today — Fast UK Delivery Available
Join thousands of UK contractors, architects, and homeowners who trust SilentCloud as their sound deadening underlay of choice. Available in 3mm and 4.5mm in 20m² rolls, with fast despatch from our UK warehouse. Order before 2pm for next-day delivery options.
Acoustic Cork Rubber Underlay — Why It Outperforms Standard Rubber Underlays
Our acoustic cork rubber underlay combines the dense vibration-absorbing properties of recycled rubber with the natural acoustic and thermal benefits of cork — creating a premium underlay that outperforms either material used alone. The cork element adds natural buoyancy and resilience, reducing floor reflection of sound, while the rubber base provides the structural density needed for effective impact noise reduction. Together, they create one of the most effective and environmentally responsible acoustic underlay solutions available in the UK.
Available in both 3mm and 4.5mm thicknesses on a 20m² roll, the SilentCloud Acoustic Cork Rubber Underlay is suitable for a wide range of flooring applications. It's particularly popular for installations where both acoustic performance and a premium underfoot feel are priorities — the cork-rubber blend delivers a noticeably firmer, more natural feel underfoot compared to foam alternatives.
Best Acoustic Underlay for Laminate Flooring — Cork Rubber for Superior Results
For those seeking the best acoustic underlay for laminate flooring with a natural, premium composition, cork rubber is the material of choice. The cellular structure of cork is naturally sound-absorbent, and when combined with dense recycled rubber, the result is an underlay that addresses both impact noise (footsteps, impacts) and airborne sound (voices, music) — making it effective across a broader noise-reduction spectrum than single-material underlays.
Available in 3mm and 4.5mm options, it adapts to different project requirements: the 3mm version is ideal where floor height is limited, while the 4.5mm offers enhanced acoustic performance for properties where maximum noise reduction is the priority. Both variants provide excellent stability beneath laminate planks, preventing movement and edge-lifting over time.
Soundproof Underlay Part E — Cork Rubber Acoustic Performance
This soundproof underlay Part E compliant product is suitable for use in acoustic flooring assemblies meeting the requirements of Approved Document E of the UK Building Regulations. The cork-rubber composition delivers strong impact noise reduction performance, making it appropriate for residential properties, flat conversions, and HMOs where Part E compliance is required.
The natural cork content also contributes to thermal insulation, helping to improve the energy efficiency of your floor as well as its acoustic performance — an added benefit that is increasingly valued in modern residential construction where both acoustic and thermal standards are specified.
Sound Deadening Underlay for Floors — How Cork Rubber Works
The SilentCloud Acoustic Cork Rubber Underlay functions as a sound deadening underlay for floors through its unique dual-material composition. The rubber component provides dense mass and structural rigidity that decouples the floor surface from the subfloor, absorbing and dissipating impact energy before it can be transmitted as structure-borne noise. The cork component adds a secondary layer of acoustic absorption, particularly effective at mid and high-frequency sound transmission.
This makes the cork-rubber underlay particularly effective in properties where both impact noise (footsteps between floors) and airborne noise (sound transmission through walls and floors) are concerns. Its natural composition also makes it a preferred choice for homeowners who value sustainable, eco-friendly building materials.
Impact Noise Reduction Underlay UK — Cork Rubber Technical Specification
The SilentCloud Acoustic Cork Rubber Underlay UK specification is as follows:
- Composition: Premium blend of recycled rubber and natural cork
- Available thicknesses: 3mm and 4.5mm
- Roll size: 20m² per roll
- Suitable for: Laminate, engineered wood, LVT, solid wood (floating)
- Building Regulations: Part E compliant acoustic system
- Thermal benefit: Natural cork improves thermal insulation of the floor
- Underfloor heating: Compatible with UFH systems (check manufacturer spec for thickness)
- Eco credentials: Natural cork + recycled rubber — sustainable and low-carbon
- Subfloor compatibility: Timber and concrete subfloors
- Origin: UK stocked, fast delivery
The 4.5mm variant is particularly popular for projects where maximum acoustic performance is required and floor height allows for the additional thickness — delivering enhanced impact noise reduction compared to the standard 3mm option.
Frequently Asked Questions
What is the difference between cork rubber underlay and plain rubber underlay?
Cork rubber underlay combines natural cork with recycled rubber to create a premium composite material. The cork adds natural sound absorption (particularly for mid and high-frequency noise), thermal insulation, and a firmer, more natural underfoot feel. Plain rubber underlay relies solely on dense rubber mass for acoustic performance. Cork rubber is generally considered the premium option — particularly suited to high-end flooring installations where both performance and sustainability are priorities.
Does the acoustic cork rubber underlay meet Part E Building Regulations?
Yes. The SilentCloud Acoustic Cork Rubber Underlay is suitable for use in acoustic flooring assemblies meeting Approved Document E of the UK Building Regulations. It delivers strong impact noise reduction and is appropriate for use in residential flats, conversions, and HMOs where Part E compliance is required. For full sign-off, we recommend confirming the complete system specification with your acoustic consultant or building control officer.
Which thickness should I choose — 3mm or 4.5mm?
Choose 3mm where floor height is limited — for example, in doorway clearance situations, adjacent room transitions, or under-stair installations. Choose 4.5mm where maximum acoustic performance is the priority and the additional 1.5mm increase in floor height is acceptable. The 4.5mm variant provides enhanced impact noise reduction and is ideal for upper-floor installations in flats or conversions where noise between floors is a primary concern.
How much acoustic cork rubber underlay do I need?
Measure each room (length × width in metres) to calculate your floor area in square metres. Add 10% for cuts and wastage. Each roll covers 20m² — if your total area is under 20m², one roll will be sufficient. For areas over 20m², calculate how many rolls you need by dividing your total area (plus 10% waste) by 20. For example, a 35m² total area with 10% waste = 38.5m² ÷ 20 = 2 rolls.
Is cork rubber underlay compatible with underfloor heating?
Yes — both the 3mm and 4.5mm variants of this cork rubber underlay are compatible with underfloor heating systems. Natural cork has good thermal properties and allows efficient heat transfer from the UFH system to the floor surface. However, for hot-water (hydronic) UFH systems where thermal resistance (tog rating) is specified, we recommend confirming compatibility with your UFH system supplier to ensure the underlay's tog value is within the acceptable range for your heating output requirements.
