Understanding dB Ratings: A good dB rating for an underlayment is typically above 20 dB. This indicates that the underlayment can significantly reduce sound transference through floors.
The two best underlays on the market are chromium super high density foam underlay, this has a rating of 42db and colours red heavy duty rubber underlay that has a decibel rating of 46db. Most builder grade underlay is usually in the region of 30 to 32 decibels.
If you add up your basics: 40 - 48 dB You are WELL INSIDE the 'acceptable' for subfloor acoustics for a wood frame multifamly unit building.
Those around the 3-5mm mark are a great budget-friendly option and they will make a difference to the look and feel of your laminate. But they don't offer the same performance as a thicker underlay. For the best results, it's better to invest in a laminate flooring underlay measuring 6mm or more.
For a typical home we'd recommend a density rating above 100 kg/m³. This will ensure your underlay outlasts your carpet but still provides that comfortable, plush feeling when walking on it.
Sponge rubber underlay combines the best of durability and comfort. Sponge rubber underlay is made from synthetic rubber, and this gives comfort and durability meaning it can last for years and years underneath your carpet.
A higher density typically indicates a more durable and resilient carpet that can withstand heavy foot traffic and resist matting or crushing.
So generally speaking 7mm is about as thin as you want to go unless you have a specialist need for something thinner, but 8-12mm is the band most manufacturers produce carpet underlay with and its perfect for any room and any carpet.
12mm carpet underlay is perfect for all areas of your home and we recommend it for areas requiring good to high levels of comfort. Want The Best Performance Underlay? Size: Choose at the drop down box above. Sound Reduction: 43dB approx.
We would recommend an underlay of 3 – 5mm for laminate flooring. It should be at least 3mm thick to provide comfort and ground levelling properties. But, it should be no more than 5mm thick. If it's any thicker, you could experience problems with the laminate's locking system.
High-end studios often aim for noise floor levels below -60 dB, allowing for superior signal clarity and dynamic range.
Underlay will reduce but not stop airborne noises. To completely stop an airborne noise, you need a solid material. But that solid material would make your carpet uncomfortably hard. On the other hand, underlay, a softer material, will reduce airborne noises to a degree and greatly reduce impact noises.
Decibel Level
Because people can't hear all frequencies, or pitches of sound, A-weighted decibels (dBA) can be used to describe sound based on what human ears can actually hear. Sounds at or below 70 dBA are generally considered safe. Any sound at or above 85 dBA is more likely to damage your hearing over time.
A 7mm standard quality foam underlay would be considered a budget price option, whereas a high density 8mm to 12mm would be regarded as a good option to give great support to your new carpet.
Thick underlay may be the gold standard, but those measuring 10-11mm are a great compromise.
A 3mm underlay is ideal for flooring less than 18mm thick. This thinner option provides sufficient support without adding unnecessary height. For flooring that is 18mm or thicker, you'll need a 5mm underlay. This added thickness ensures better stability and cushioning for heavier or more robust flooring options.
Super 8mm is the perfect choice when working towards a budget, providing fantastic value for money with this wonderful underlay! The right underlay can help preserve and extend the lifespan of your carpet by acting as a shock absorber protecting your carpet from wear and tear.
Medium pile – 7mm to 13mm
Medium pile carpets are the Goldilocks of the carpet world. Being able to be soft and hardwearing.
If you buy a more expensive carpet, for example wool, that is designed to be durable and last for many years, then you should try to invest in a higher quality underlay. Of course, that's if the budget allows.
Density plays a role in both comfort and durability. Higher-density underlay tends to be more resilient and durable, as it can better withstand the pressure and weight placed on the flooring surface. It offers improved support and helps prevent premature wear and tear of the floor covering.
The more fibers, the heavier the weight and the better the carpet quality. Density: The number of fibers in a pile. The more fibers, the denser the pile, and the higher the carpet quality. Height: The length of the wear layer of the carpet, measured from the top of the pile to the top of the backing.
Expensive carpets look and feel more luxurious underfoot. The quality of the fibres and materials used is higher. They are and they will last longer and wear better. In comparison a budget carpet will look and feel lower quality, and it will wear and need replaced sooner.
If you're looking for a carpet that will stand up to heavy traffic, nylon is a good choice. It's one of the most durable fibers available, making it ideal for areas such as living rooms and family rooms. Nylon is also stain-resistant, so it's a good option if you have young children or pets.