Home and workplace noise is one of the most common sources of discomfort in today’s world. Noise from traffic, other people in the house or adjacent homes, speakers and conversations in the office or at home can move very easily through walls, ceilings and floors. That’s why many homeowners, building designers and builders are looking for reliable materials that provide high sound reduction value. One material that keeps coming up in this discussion is plywood. Due to its structure and density, plywood for soundproofing is one of the most commonly used materials for constructing wall systems, studios, and acoustic interiors. One question that many ask is, " Is plywood good for soundproofing? What is the best type of plywood for soundproofing?

For people wanting to make quieter, more comfortable environments, learning how plywood interacts with sound will help them understand how to do so.

Quick Answer

Yes, plywood for soundproofing can be used to reduce noise transmission through it due to its density and multi-layered wood structure. Although plywood alone will not block all sound effectively, when combined with insulation and multi-layered wall assembly components, it becomes highly effective at blocking sound.

What You Should Know

• Is plywood good for soundproofing? Yes, it can act to block sound due to density.
• Does plywood help with soundproofing? Yes, especially when combined with insulation products.
• Thicker plywood panels tend to block sound better.
• Marine, hardwood and calibrated plywood are typically considered the best plywood for soundproofing.

To put it simply, plywood will increase wall mass and thereby reduce sound transmission from one

Table of Contents

• Understanding How Sound Travels in Buildings
• Will Plywood Help with Soundproofing?
• The Acoustic Properties of Plywood
• The Importance of Acoustic Performance to Soundproofing
• Choosing the Best Plywood for Soundproofing
• Plywood Thickness and Soundproofing Performance
• How to Reduce Noise with Plywood Soundproofing
• Soundproofing Plywood Installation Procedures
• Tips for Improving Soundproofing with Plywood
• Common Mistakes
• Opinion
• FAQ

Understanding How Sound Travels in Buildings

Before selecting plywood, it's essential to know how sounds travel through buildings to effectively soundproof a space.

When sound waves enter a building, the vibration created by the sound waves travels throughout the building due to the vibrations created by the walls, ceiling or floor when sound waves come in contact with them. The thinner or lighter the plywood, the more easily sound waves will travel through the plywood material.

When it comes to soundproofing, there are two main concepts:

1) Sound Absorption

Soft plywood absorbs sound and helps minimise the echo effect found in many places.

2) Sound Barriers

The density of plywood affects how much sound passes through it. The denser the plywood generally means that it will act as a barrier against sound transmission.

Plywood primarily creates a sound barrier by virtue of the vibrations produced by the density of the layers of the plywood and the construction of the plywood.

Plywood increases the mass of a wall or floor when installed which helps to limit the amount of sound transmitted through walls or floors of the building.

Will Plywood Help with Soundproofing?

When researching soundproofing options; one of the most common questions is whether or not plywood can be used for soundproofing.

Plywood is an exceptional choice for soundproofing when improving the sound insulation of a structure; but its use on its own does not provide the best soundproofing results. Instead, plywood should be combined with other types of products to achieve the best soundproofing results by utilizing a layering technique. means that it can help with reducing sound transmission from one side to another effectively.

When sound waves reach your wall, they all travel through the wall in three different ways (it depends on your wall material).

To accomplish this, the best soundproofing solution works in all three of these ways:

1. Reflecting some of the sound into the room

2. Transmitted through the structure, being absorbed by the material

3. Passing directly through the wall.

To accomplish successful soundproofing, plywood will add mass and rigidity to a wall.

The Acoustic Properties of Plywood

• Due to the mass of each of the individual bonded layers of plywood, they create a sound barrier
• By using cross-laminated wood layers in an alternating direction, the manufacturer of engineered plywood can produce a panel that disperses acoustic energy.
• The thickness of the individual layers and the composite of engineered wood creates a sound barrier panel.

All of the above characteristics of plywood will tell you that plywood will help with soundproofing when utilized in both residential and commercial structures.

The Importance of Acoustic Performance to Soundproofing

The acoustic performance of a material is used to determine how well it will absorb and transmit sound.

The density of the material is among the primary factors used to determine if plywood will assist in achieving a soundproof environment. The higher the density and weight of the material, the more energy necessary to transmit a sound wave through that Thicker plywood panels and thicker plywood sheets are better at blocking noise than thinner sheets and panels.

While a thin decorative piece may not contribute much to the overall noise dampening capabilities, thicker plywood sheets are a good choice for building structures where noise reduction is essential.

For this reason many professionals suggest the use of denser plywood when attempting to determine the best plywood for soundproofing.

Choosing the Best Plywood for Soundproofing

When determining the best plywood for soundproofing, it is important to consider density, thickness and durability.

The composition of certain types of plywood makes them more desirable than others from an acoustic perspective. Plywood with strong wood veneer layers and high structural density will provide improved soundproofing than plywood with low structural density.

Marine Plywood

Marine plywood is very strong and durable and has dense wood layers, making it an excellent choice for best plywood for soundproofing, particularly in environments that require protection from moisture.

Hardwood Plywood

Hardwood plywood is constructed with dense wood veneer layers, giving it excellent weight and strength; in addition, as the density of hardwood plywood increases, the soundproofing ability of hardwood plywood also increases, as therefore many professionals recommend using hardwood plywood for soundproofing walls.

Calibrated Plywood

Calibrated plywood provides consistent thickness and smooth face which makes it ideal for precision applications such as acoustic panels or constructing studios.

These three types of plywood will generally be the most commonly used types of plywood for installing plywood for soundproofing when installed in residential or commercial settings.

Plywood Thickness and Soundproofing Performance

When considering the thickness of a given sheet of plywood, the thicker a sheet of plywood, wood the greater s of that sheet will have and therefore the more effective it will be at blocking sound.

How to Reduce Noise with Plywood Soundproofing

Apartment Walls

By installing plywood between the drywall and wood studs, the amount of sound that travels will be greatly reduced.

Office Partitions

Sound insulation that is added to conference and meeting rooms will improve your experience with regard to business-related affairs.

Ceiling and Floor Construction

The application of plywood within all flooring structures may at times reduce the transfer of vibrations from level to level. These applications provide many examples of how plywood offers solutions for sound reduction in real life.

Soundproofing Plywood Installation Procedures

To have maximum performance of the soundproofing properties of plywood, it is important to follow proper installation procedures.

Installation Steps

1. Insulate the wall cavity with sound insulation.

2. Attach sheets of soundproofing plywood to studs.

3. Seal all joints with acoustic caulk.

4. Cover the plywood with drywall.

5. Install acoustic panels on the finished surface as necessary.

Through this method of providing additional layers of mass to the wall, you increase the total weight of the wall which greatly increases its soundproofing ability.

Tips for Improving Soundproofing with Plywood

Even well-installed soundproofing plywood has the potential to enhance sound protection through proper installation methodology.

SOUND PROOFING AT HOME

The main goal of constructing a soundproof zone is to minimize noise entering and exiting that zone. Many barriers are found in this framework and should be adhered to for soundproofing to be successful. Here are some common barriers to improving the efficiency of soundproofing.

1. Separate framing on each wall where possible

2. Utilise heavy plywood sheets as an interview wall to give more mass to the room and to deaden sound. The heavier the sheet(s), the less sound will reach neighbouring rooms.

3. Insulate with material such as fibreglass or mineral wool and/or sound-absorbing materials, to help eliminate or reduce sound between walls/ceilings.

4. Use multiple layers of plywood sheets/ribbons to assist in decreasing sound. Each layer of plywood adds more mass to the wall and thus helps to absorb sound.

5. To reduce sound loss, seal all gaps and joints between walls/ceilings.

6. Combine drywall and plywood, or plywood and drywall, in walls to provide more mass than each material will provide. Because each material provides different densities, their combination should yield greater and more effective sound absorption.

7. Use resilient channels on wall surfaces to reduce vibration transfer.

8. Use an acoustic sealant around the edges of the walls to further prevent sound transfer through the joints, etc.

By utilising these barriers, the ability of the existing plywood to provide soundproofing material may be greatly improved in both residential homes and businesses.

Common Mistakes

Common soundproofing errors are made in the performance of soundproofing projects. When soundproofing projects fail, the errors made include:

1. Using sheets of plywood that are thin for soundproofing purposes.

2. Areola space between sheets of plywood.

3. Not using insulation material in wall cavities to reduce sound.

4. Not sealing smooth edges or joints around the perimeter of each piece of plywood.

5. Expecting plywood alone to block all noise from outside of the structure.

Eliminating these common errors will increase the odds of completing a project with plywood as a soundproof material.

Opinion

Plywood provides an immediate solution for enhancing the acoustic performance of sound-insulated walls. Due to the multi-ply composition, plywood has added density, therefore reducing vibration transfer and sound transmission. Even though, at some point, it is impossible to totally remove all sound, plywood will provide good results when used in conjunction with other products within a multi-ply soundproofing or insulation system that is free of flaws in adhesion.

The types of plywood that should be used for soundproofing include marine, hardwood, and calibrated, since these types of plywood can be made using materials that contain a higher density than standard plywood. When plywood has been properly cut and assembled, it provides good building material options for home theatre, music studio, office partitions, etc.

The quality of the plywood made by Royale Touche has the strength, durability, and consistency in manufacturing and use. Plywood has been used for decades to create strong and durable hearing solutions.

FAQ

Can Plywood Be Used Effectively for Soundproofing a Wall?

Plywood can provide soundproofing to walls through the addition of density to the walls.

Can Plywood Be Used to Soundproof Rooms?

Plywood can provide soundproofing to rooms by adding mass to the wall, thereby reducing the amount of vibration transferred through the wall.

What Type of Plywood is the Best for Soundproofing?

Typically, marine plywood, hardwood plywood, and calibrated plywood are most often cited as being the best plywood for soundproofing.

What Thickness of Plywood Should Be Used for Soundproofing?

For soundproofing purposes, 1/2" (13mm) to 3/4" (19mm) sheets of plywood are recommended, depending on the desired level of sound obstruction.

Can Plywood Completely Block Sound?

No single material can completely block sound; however, plywood will prove to be very effective in assisting to minimise sound when used along with other high-density insulation materials and multiple layers of material for soundproofing.

In What Areas Can Plywood Be Used for Soundproofing?

Plywood can be used for soundproofing applications in areas such as home theatres, recording studios, semi-separating walls in residential and multi-storey structures, between flooring and ceiling slab systems, and other locations where there are two separate rooms, to provide dramatic noise reduction between those affected spaces.

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