Bona U300 - Sound dampening solution
Bona U300 - Sound dampening solution
An acoustic underlay mat that lays under the parquet, laminate or other floor covering can effectively reduce the impact of footfall sound and isolate vibration to improve quality of life. The Bona U300 decouples the pathway and stops the sound vibration. It is also useful for a light stress decoupling to improve a construction with weak substrates.
Exposure to noise
Noise has been highlighted as a modern health issue, and much focus has now been placed on how we can eliminate disturbing noise. There is a growing demand for noise reduction systems to reduce daily exposure to intrusive and distracting sound. Use of the right kind of sound reduction measures can help to eliminate disturbing noise.
Perceptions of sound
To reduce the sound and create a good soundproof floor you need to know what kind of sound we are dealing with to take the right measures.
There are different kind of sounds, and we usually talk about airborne sound and impact sound. Whilst airborne sound can relatively easily being influenced, the reduction of impact sound requires specific measures, like a acoustic underlay mat.
Download the brochure for more information about the perception of sound and different sound types
Bona U300
Material
Bona U300 is an underlayment made of fine PUR foam granules and cork, bound with PUR elastomers. It is both solvent and rubber free as well as DIBt and EMICODE (EC1 Plus) approved.
Size
Bona U300 is available in 2, 3 and 5 mm thickness and will be delivered in rolls with 1 m width and different lengths. Choice of thickness depends on the construction e.g., height differences to other flooring material. For highest impact sound reduction, 5 mm is recommended. For floors without tongue and groove such as mosaic and industrial flooring, the recommendation is not to use a mat thicker than 2 mm.
Stress Relieving
Bona U300 works as well as a stress relieving layer when fully bonded between the substrate and the wooden floor. Bona U300 takes up the natural wood movements and will thereby protect the substrate.
The advantages of Bona U300
Simple and versatile
Bona U300 can be used under laminate, parquet, and carpet, as well as linoleum and PVC. It is easy and fast to install. Below parquet it can be either installed fully bonded in conjunction with a bonded parquet floor or loose laid, when used below a floating engineered parquet
Impact sound reduction
With a reduction of up to 19 dB, Bona U300 has outstanding structure-borne sound insulation regarding both impact sound reduction and vibration absorption. Bona U300 eliminates hollow clicking sounds and reverberations (floor to ceiling noise) under hard floor coverings.
Resistant and durable
Bona U300 has an excellent resistance to moisture absorption and rot degradation. There is no reduction of the acoustic and anti-vibration properties, even after years of use.
Designed for low emissions
Bona U300 meets recognised low-emission standards and is approved by both DIBt and EMICODE (EC1 Plus). The formulation is free from added solvents and rubber.
Areas of application
Domestic housing
Contemporary building design can sometimes work against minimising the sounds within a house. Open-plan layouts and hard flooring look fantastic, but they don’t absorb noise well.
Apartments
Acoustics are an easily overlooked but critical dimension to designing comfortable living spaces and high-rise flats. Floating timber, bamboo and laminate flooring can create substantial footfall sound if not installed properly.
Open offices
Noise is one of the most common complaints raised by employees working in corporate office settings – especially in open office concepts where employees are situated together in a large space with little to no separation.
High traffic
Schools and kindergartens, public buildings, and sport centres are all places where noise exposure can be quite high and where it is of importance that the noise is greatly reduced, to create a healthier indoor environment.
Case story
Advantages for the customer
• Sound decoupling for heavy traffic areas
• Solvent free - EC1 Plus and DIBt compliant
• Supports weak substrates
Sound control is indispensable, especially in hightraffic areas that are used for a variety of purposes. When renovating Helsingborg Central Station, Sweden, Bona was tasked with installing noise insulation for heavily used floors. The station is one of Sweden’s busiest communication facilities and is a communication hub for ferries, trains, city and regional buses etc.
As part of the renovation work, Bona U300 was installed to reduce impact sound on the 500m² flooring. It perfectly dampens the high noise level caused by walking or travelling over the floor through effective decoupling.
Installing the perfect solution
How to install
There are different methods of installing a new floor and depending on method used there is a need for underlayment. Bona U300 is easy to install and makes the installation of an underlay mat a swift process.
Different constructions
There are different solutions for sound damping dependent on what building structure is used. Some building structures are more sensitive to sound transmission than others. In these cases, an underlay mat can be a good option since it will reduce the impact sound as well as the airborne sound greatly.
Soundproof companions
Bona Titan
The ultimate strength makes Bona Titan ideal for extremely wide planks, thick end-grain block floors, large-format mosaic patterns and other demanding flooring structures.
• Ultimate durability
• High shear strength
Bona Quantum
Bona Quantum offers outstanding strength. Its unique formula offers the advantages of both hard-elastic and hard adhesive in one effective product, suitable for all-round use.
• Broad usability
• Moisture barrier
Bona Quantum T
With the same unique benefits and performance as Bona Quantum, Bona Quantum T offers a thicker viscosity and formula to suit application preferences.
• All-round usage
• Thicker viscosity
Bona R777
A polyurethane parquet adhesive that hardens without shrinking. It is especially suitable for timber that is sensitive to swelling/moisture and for low/non-absorbent substrates. Bona R778 can also be used.
• Water and solvent free
• No swelling of wood
Other underlayments
Decoupling stress underlayments
Bona U310 – 1 mm
A polyester spunbonded fleece, and due to a high tear resistance, it reduces the stress transferred to the subfloor when laying prefabricated parquet, solid parquet or laminate on old parquet.
Bona U340 – 4, 9 or 12 mm
A polyester fibreboard underlay that reduces the stress transferred to the sub-floor when laying ceramic tiles, natural stone, and wood flooring. The high compressive strength allows it to tolerate high loads.