Sound Proofing and Acoustic Preparation For Wood Flooring

When installing new wood flooring, proper subfloor preparation is essential not only for structural stability but also for acoustic comfort. Without the correct soundproofing layers, wooden floors can transmit footsteps, vibrations, and everyday noise between rooms and floors.
This is particularly important in Edinburgh’s Victorian, Georgian and traditional tenement properties, where timber joist structures can easily transfer sound.
At Hoff Parquet, we carefully prepare the subfloor with acoustic soundproofing systems before installing engineered wood flooring, parquet flooring, chevron or herringbone floors. This ensures a quieter, more comfortable living environment.

​Why Acoustic Preparation Matters
Wood flooring is a natural hard surface, meaning it can transmit impact noise, such as:
• Footsteps
• Furniture movement
• Dropped objects
• Vibrations between floors
​Proper acoustic layers significantly reduce sound transfer and improve overall comfort in the home.

​Understanding Impact Noise vs Airborne Noise
Before selecting the right acoustic system, it's important to understand the two main types of sound transmission.

Impact Noise
Impact noise occurs when physical contact with the floor creates vibrations. Examples include walking, dropping objects, or moving furniture. These vibrations travel through the subfloor structure and joists, transferring sound to lower floors.
This is the most common acoustic problem in wooden floors.

Airborne Noise
Airborne noise travels through the air and passes through floor structures. This includes voices, music, televisions, or general activity.
While flooring layers mainly address impact noise, good acoustic systems can also help reduce airborne sound transfer.

Acoustic Preparation for Timber Subfloors
​Many period properties in Edinburgh feature traditional timber joist constructions. While beautiful and structurally strong, these floors often lack modern acoustic insulation.
Proper preparation usually includes several key steps.

1. Stabilising the Existing Structure
Before installing acoustic layers, the existing floor structure must be stabilised.
This may involve:
• Securing loose floorboards
• Strengthening joists
• Eliminating structural movement
• Adding plywood stabilisation layers
Any movement in the structure will reduce the effectiveness of soundproofing systems, so this step is essential.

2. Installing Structural Plywood
A common approach is installing high-quality plywood boards over existing floorboards.
Benefits include:

• Creating a rigid and stable base
• Reducing structural movement
• Preparing a flat surface for acoustic layers
• Improving overall flooring durability

​
Plywood is typically screwed directly into joists or existing boards to create a strong subfloor platform.

3. Acoustic Underlays and Soundproofing Membranes
Once the structure is stabilised, acoustic underlays are installed before the wooden flooring.
High-performance acoustic materials may include:

• Rubber crumb acoustic mats
• Dense fibre acoustic boards
• Acoustic foam layers
• Mass-loaded vinyl membranes

These materials work by absorbing vibration energy, significantly reducing sound transmission between floors.
Professional acoustic systems can reduce impact noise by 15–30 dB, dramatically improving comfort levels.

Acoustic Systems for Concrete Subfloors
Concrete floors behave differently than timber structures but can still transfer significant impact noise.
Preparation usually involves:

1. Grinding the concrete surface to remove imperfections
2. Installing a damp-proof membrane if required
3. Applying latex self-levelling compound to create a perfectly flat base
4. Installing a high-density acoustic underlay

This layered approach ensures both moisture protection and acoustic performance before wooden flooring is installed.

Acoustic Solutions for Floating vs Glued Floors
​The choice of installation method also affects acoustic performance.
Floating Floor InstallationFloating floors are installed over acoustic underlay without fixing directly to the subfloor.
Advantages:

• Excellent impact noise reduction
• Quick installation
• Cost-effective solution

However, floating floors can sometimes create a slightly hollow sound if not installed correctly.

Glue-Down Flooring Installation
For high-end projects, Hoff Parquet often recommends fully glued installation using flexible parquet adhesives.
Advantages include:

• Solid and premium feel underfoot
• Reduced hollow sound
• Greater floor stability

Ideal for wide plank flooring and parquet patterns
In many cases, acoustic membranes can still be installed beneath the adhesive system, combining both stability and sound reduction.

Special Considerations for Period Properties
Edinburgh's beautiful Victorian and Georgian homes require particularly careful flooring preparation.

• Challenges often include:
• Uneven original structures
• Large joist spacing
• Thin historical floorboards
• Lack of insulation between floors

Professional acoustic preparation may involve:

• Installing mineral wool insulation between joists
• Reinforcing the structure with plywood
• Adding acoustic isolation layers
• Selecting suitable engineered flooring construction

These measures allow homeowners to preserve the character of period properties while improving modern comfort.

Choosing the Right Wooden Flooring for Acoustic Performance
Certain flooring constructions perform better acoustically.
For example:
Engineered Wood Flooring
Engineered flooring is often the best option for acoustic performance because:

• Multi-layer construction absorbs vibration
• Greater dimensional stability
• Compatible with acoustic underlays
• Ideal for wide plank and parquet installations

At Hoff Parquet, we supply premium engineered flooring with birch plywood bases and thick top layers, ensuring excellent structural performance.

Professional Installation Makes the Difference
Even the best acoustic materials will not perform properly without correct installation techniques.
Key installation details include:

• Maintaining perimeter expansion gaps
• Preventing sound bridges between flooring and walls
• Using correct adhesives and underlays
• Ensuring perfectly level subfloors

Poor installation can create acoustic bridges, allowing sound to bypass the soundproofing layers.

Expert Subfloor Preparation by Hoff Parquet
At Hoff Parquet, we believe that the success of every wooden flooring installation starts beneath the surface.
Our team provides professional subfloor preparation including:

• Subfloor inspection and structural assessment
• Timber and concrete floor levelling
• Plywood stabilisation systems
• Acoustic soundproofing installation
• Damp-proof membrane installation
• Preparation for parquet, herringbone, chevron, and wide plank flooring

By combining precision subfloor preparation with premium-quality wood flooring, we ensure that every project delivers not only beauty but also comfort, durability, and acoustic performance.