Decimat® 10mm Soundproofing Underlay – Up to 75dB Impact Noise Reduction

The UK's Most Powerful 10mm Acoustic Underlay – Outperforms Every Competitor

Decimat® 10mm Soundproofing Underlay delivers up to 75dB combined acoustic performance – the highest available in its class from any UK supplier. Purpose-engineered for concrete and timber floors, Decimat® provides exceptional impact and airborne noise reduction for homes, apartments, offices, and commercial developments – all with fast, hassle-free installation.

While leading competitors such as dB FFR and Hush FFR 10mm only achieve 39dB impact noise reduction, Decimat® reaches up to 75dB – making it the clear choice for anyone serious about acoustic performance in the UK.

Why Decimat® Beats the Competition

Feature	Decimat® 10mm	Competitor 1 10mm	Competitor 2 10mm
Impact Noise Reduction	Up to 75dB ✅	39dB	39dB
Density	1500 kg/m³ ✅	7.5 kg/m²	7.5 kg/m²
No Overboarding Required	Yes ✅	No	No
Ideal for Concrete Floors	Yes ✅	Yes	Yes
Free UK Delivery	Yes ✅	No (£90 extra)	No (£85 extra)
DIY & Professional Use	Both ✅	Professional only	Professional only

Key Benefits

✅ Industry-Leading 75dB Noise Reduction – The highest impact noise performance available in a 10mm underlay on the UK market. Dramatically reduces footfall, appliance vibrations, and structural impact noise between floors.

✅ No Overboarding Required – Unlike competitor products, Decimat® can be installed directly under most flooring finishes without the need for additional plywood overlays, saving significant time and cost.

✅ Specifically Engineered for Concrete Floors – Decimat® excels on concrete subfloors, decoupling impact vibrations at the source and preventing transmission to lower levels – perfect for flats, apartments and multi-storey buildings.

✅ Ultra-High Density at 1500 kg/m³ – More than double the mass per m² of comparable recycled rubber underlays, delivering far greater acoustic mass and long-term durability under heavy foot traffic and appliances.

✅ Works Under All Flooring Types – Suitable under engineered timber, laminate, LVT, stone, ceramic tile, and carpet. Fully compatible with underfloor heating systems.

✅ Fast, Hassle-Free Installation – Simple roll-out and trim installation. No specialist tools or adhesives required. Ideal for both DIY homeowners and professional contractors.

✅ Free UK Delivery Included – No hidden delivery charges. Your order arrives direct to your door, fast – while competitors charge up to £90 extra.

✅ Long-Lasting Premium Performance – Built to maintain its acoustic and structural properties for the lifetime of the floor. Will not compress, crack, or degrade under normal use conditions.

Technical Specifications

Product Name	Decimat® 10mm Soundproofing Underlay
Thickness	10mm
Sheet Dimensions	1m × 5m
Coverage per Roll	5 m²
Impact Noise Reduction	Up to 75dB
Material Density	1500 kg/m³
Suitable Subfloors	Concrete, Timber, Screed
Compatible Flooring	Engineered Wood, Laminate, LVT, Stone, Carpet, Tile
Underfloor Heating Compatible	Yes
Installation Method	Roll-out, butt-joint, tape seams
Country of Origin	United Kingdom
Delivery	Free UK Delivery

Where to Use Decimat® 10mm

Decimat® is the preferred choice across a wide range of residential and commercial applications throughout the UK:

🏠 Domestic Homes – Reduce footfall noise between floors in houses and bungalows. Perfect for bedrooms, living rooms, and hallways where peace and quiet matters most.

🏢 Flats & Apartments – Comply with Part E Building Regulations for new build and refurbishment projects. Decimat® provides the acoustic separation required between connected dwellings.

🏗️ New Build Developments – Specified by architects, developers, and contractors seeking a cost-effective, high-performance acoustic floor build-up without Robust Details.

🏋️ Gyms & Fitness Studios – Absorb heavy impact from weights, machines, and exercise to protect lower-level occupants and meet commercial acoustic standards.

🏫 Schools, Offices & Commercial Premises – Reduce cross-floor noise transmission in multi-storey commercial buildings to improve productivity and comply with building regulations.

How to Install Decimat® 10mm Underlay

Step 1: Ensure the subfloor is clean, dry, and level. Remove any protruding fixings or high spots.

Step 2: Unroll Decimat® across the floor surface with the smooth side facing upwards. Butt-join sheets tightly – do not overlap.

Step 3: Tape all seams with acoustic joining tape to maintain acoustic performance at joints.

Step 4: Trim neatly to fit the room using a sharp utility knife. Do not turn up the edges.

Step 5: Proceed to lay your chosen flooring finish directly on top. No overboarding is required in most applications.

Frequently Asked Questions

Can Decimat® be used under underfloor heating?
Yes. Decimat® 10mm is compatible with both electric and wet underfloor heating systems. Always consult your underfloor heating supplier for specific thermal resistance (tog) requirements.

Does Decimat® work on timber floors?
Yes. While Decimat® is specifically optimised for concrete subfloors, it also performs excellently on suspended timber floors, significantly reducing both impact and airborne noise transmission.

How many rolls do I need?
Each roll covers 5m². Simply measure the length × width of your room, divide by 5, and round up to the nearest whole number. We recommend adding 10% for wastage on irregular rooms.

Is Decimat® suitable for new build projects?
Absolutely. Decimat® is used by developers across the UK seeking a proven acoustic floor build-up that helps meet Part E of the Building Regulations in residential and mixed-use developments.

Why is Decimat® better than recycled rubber underlays like dB FFR?
Decimat® has a density of 1500 kg/m³ versus 7.5 kg/m² for standard recycled rubber products, delivering far superior mass-loaded acoustic performance and up to 75dB noise reduction – nearly double that of comparable products.

Soundproofing Underlay

Decimat® 10mm Foam Soundproofing Underlay | 75dB Impact Noise Reduction