Can a Fence Be Completely Soundproof?

When looking for ways to reduce noise in your outdoor space, a common question is: Can a fence be completely soundproof? The simple answer is no. No fence can block 100% of sound. However, with the right materials, construction, and placement, you can significantly reduce noise levels and create a much quieter environment.

How Sound Travels and Why Fences Can’t Be 100% Soundproof

Sound travels in waves and can pass through, reflect off, or be absorbed by different surfaces. Unlike solid walls, fences usually have gaps or are made from materials that allow some sound to pass through. Even the best soundproof fences will only reduce noise rather than eliminate it entirely.

Additionally, sound waves can travel over a fence, particularly if the noise source is taller than the barrier itself. This is why achieving complete soundproofing outdoors is nearly impossible. However, effective noise reduction is still achievable with the right approach.

Factors That Improve a Fence’s Noise Reduction

Height

A taller fence is more effective at blocking sound. Ideally, a noise-reducing fence should be at least two metres high, as this helps to block direct sound waves from reaching your space.

Material Choice

Dense, solid materials are the best at reducing noise. Some of the most effective options include:

• Acoustic fencing - Designed specifically for noise reduction, these fences often have interlocking boards to eliminate gaps and use sound-absorbing materials.  Read our blog on 'What is an acoustic fence'
• Timber fencing - Solid timber panels, particularly those with no gaps, can help to reduce sound transmission.
• Concrete or brick walls - These provide excellent noise reduction due to their mass and density.

Design and Construction

• A fence with no gaps between boards will block more sound than one with spaces.
• Overlapping or interlocking boards can help prevent sound from passing through.
• Adding mass-loaded vinyl (MLV) or other soundproofing materials to the fence can enhance its effectiveness.

Placement and Additional Barriers

• Positioning the fence as close as possible to the noise source will help block more sound.
• Planting dense hedges or trees alongside the fence can add an extra layer of sound absorption.
• Using double-layered fencing with an air gap between panels can further reduce noise.

How Much Noise Reduction Can You Expect?

A well-built acoustic fence can reduce noise levels by around 10 to 30 decibels, depending on the materials and design. While this will not make your space completely silent, it can make a significant difference in reducing traffic noise, loud neighbours, or other unwanted sounds.

So Can a Fence be Completely Soundproof?

While no fence can be entirely soundproof, the right combination of height, materials, and design can significantly reduce noise, helping to create a quieter and more peaceful outdoor environment. Acoustic fencing is specifically engineered to absorb and deflect sound waves, making it an effective solution for reducing noise pollution from roads, railways, industrial areas, or noisy neighbours.

For those experiencing persistent noise issues, investing in a high-quality acoustic fence is a smart long-term solution. Combining fencing with additional noise-reducing measures, such as dense planting or secondary barriers, can further enhance sound reduction.

When choosing an acoustic fence, it's also essential to consider durability and longevity for the best soundproof fencing. A long guarantee, such as a 25-year guarantee, provides peace of mind by ensuring the fence will remain effective for decades without the need for frequent repairs or replacements. This not only protects your investment but also reduces ongoing maintenance costs, making it a cost-effective and sustainable choice.

Also read our blog on noise reduction using fencing for pubs.