Most Australian homes are built with standard plasterboard. By industry’s default, it’s affordable, reliable, and does a decent job of making a room look finished. But if you are at the planning stage of a renovation or a new build, you have likely noticed another option: soundproof plasterboard. You might be wondering: “If standard plasterboard is already the common choice, is it really worth paying a bit more to upgrade?”
Standard Plasterboard: The Common Choice
Standard plasterboard is the bread and butter of the Australian construction industry. If you walk into any suburban home in Brisbane or Melbourne, this is likely what is on the walls.
It consists of a gypsum core wrapped in heavy paper. It is designed to be lightweight and easy to install.
It is the most cost-effective way to line a room. It provides a smooth surface for painting and offers basic fire resistance.
Because it is lightweight, it has very little “acoustic mass.” Sound waves hit the board, cause it to vibrate, and those vibrations pass straight through to the other side. This is why you can often hear a conversation or a TV from the room next door.
Why Pay More for Soundproof Plasterboard?
If standard plasterboard is “good enough” for most of the house, why spend more? The answer lies in the density. Soundproof plasterboard is manufactured to be much heavier and denser than the standard version.
In physics, the heavier an object is, the more energy it takes to make it vibrate. By using a denser board, you are making it harder for sound energy to move your walls.
Unlike the simple gypsum core of standard board, soundproof versions often contain additives like glass fibres or higher-density minerals. These materials are designed to “dampen” sound, effectively soaking up the noise before it can reach the next room.
The upgrade isn’t just about technical specs, it’s about quality of life. It’s the difference between being woken up by a noisy neighbour and sleeping through the night.
Is the Upgrade Worth It?
Yes, upgrading to soundproof plasterboard is worth the extra cost if you are looking to improve privacy, sleep quality, or focus within your home. While standard plasterboard is the common choice for basic walling, it is relatively thin and light, allowing sound vibrations to pass through easily. Soundproof (acoustic) plasterboard is engineered with a much higher density and a specialized core that significantly reduces noise transfer. For specific areas like bedrooms, media rooms, and home offices, paying a bit more for the upgrade provides a level of comfort that standard plasterboard simply cannot match.
The “worth” of the upgrade comes down to the long-term value. Once your walls are plastered and painted, it is very expensive and messy to go back and add soundproofing later. By choosing to pay a little extra during the construction phase, you are making a permanent improvement to the building’s performance. In a busy modern world, the value of a quiet room is often much higher than the initial cost of the materials.
Where to Spend Your Money
You don’t need to use soundproof plasterboard for every single wall in your house. To get the best value, we recommend using standard plasterboard for the “common” areas and saving the upgrade for the “quiet zones.”
Bedrooms: Essential for a good night’s sleep, especially if the bedroom shares a wall with a living area or bathroom.
Home Offices: To block out household noise during work hours.
Media Rooms: To prevent movie bass and loud music from vibrating through the whole house.
Laundry/Utility Rooms: To dampen the sound of rattling washing machines or dryers.
By being strategic, you can keep your budget under control while still getting the benefits where they matter most.
Insulation and Sealants
It is important to remember that soundproof plasterboard is part of a system. If you decide to pay for the upgrade, you should also consider:
Acoustic Insulation: Standard thermal batts are good for heat, but high-density acoustic batts are better for sound. Placing these inside the wall cavity before the plasterboard goes on will double your results.
Acoustic Sealant: Sound is like water; it will find any gap. Using acoustic sealant (mastic) to seal the gaps at the floor, ceiling, and around power outlets is a small step that makes a huge difference.
Is the Price Difference Significant?
While a sheet of soundproof plasterboard costs more than a standard sheet, you have to look at the total project cost. The labour to install both is exactly the same; the builder still has to measure, cut, screw, and join the sheets.
When you calculate the cost over a 20-year mortgage, the extra few hundred or thousand dollars spent on acoustic materials becomes almost invisible. However, the benefit of a quiet, private home is something you will appreciate every single day.
Get Quality Building Supplies Delivered to Your Site
Whether you are sticking with the reliable standard plasterboard or choosing to upgrade to a high-performance soundproof solution, Building Supplies Australia Network is here to help. We stock a massive range of construction materials to suit every budget and project requirement.
Don’t let the noise of the outside world or the next room ruin your peace of mind. Invest in quality materials today for a better home tomorrow. Shop now.