Does adding carpet reduce noise?

The carpet absorbs background noise and lowers echoes by preventing sound from bouncing across your rooms. A hardwood or concrete floor makes it much simpler for sound waves to bounce off, but the carpet’s fibrous texture helps it wrap and disperse sound waves. As a result, there is a decrease in loudness, harshness, and echoes throughout the house.

Between 30% and 70% echo can be effectively reduced in your home or space by adding or replacing your carpet. In testing, wool carpets of various constructions generated an average echo reduction of 46%, higher than the 35% reduction that carpets typically provide to airborne noise. Reductions of 50% to 70% can be made with underlay.

We also produce surface noise in addition to verbal noise. Carpets dampen the impact of the sound, absorbing and deadening it, while bare tile floors generate 7–12 times more surface noise. 

Wool carpet often enhances a room’s acoustics by lowering noise levels and reverberation durations, whether the space is in your house or a public building. Background noise is reduced, communication is more understandable, and people automatically speak in a softer, more relaxed manner instead of making even more noise by shouting to be heard over the din surrounding them.

How Do Carpets Reduce Noise?

If you’ve ever stood in front of a loudspeaker or in an area with high noise, you know that the sounds can vibrate through you. The vibrating of air molecules is the primary means of sound transmission, and sound can be muffled by carpet by reducing its vibration. 

Regardless of the type, carpets are extremely fibrous. The carpet’s increased surface area and the air spaces between its fibers and fiber groups trap air molecules, preventing them from vibrating freely. Due to the air molecules’ reduced vibration, all sounds are muffled.

photo of a room with rug on the floor
source: pexels

The resonant frequencies of the carpet’s various fibers, tufts, and underlays also vary. Air molecules act as a medium through which sound waves travel, much as how you may feel really loud noises. This property of carpets results from the variations in length, material, and number of fibers, which dampen and reduce noise.

Also Read: Do Bubble Wrap Block Sound?

What kind of carpet is best for soundproofing?

Here are different types of carpets to choose from:

  • Circular Rugs: They partially cover the room’s floor area due to their shape. You can place it right where the most noise comes from in a room, and the difference is evident.
  • Shags: These are bigger carpets covering most of the floor area of the room. 

Clearly, Shags cover more area and thus are more effective in sound dampening and sound proofing.

A shag covering the whole floor
source: pexels

Keep the following in mind while soundproofing floors for the greatest results:

  • Because carpet is a good sound absorber, footsteps can be muffled by 25 to 34 dB.
  • Carpets are useful for minimizing airborne and impact noise.
  • Carpet underlay can significantly enhance a carpet’s ability to reduce noise.

Which noise levels can carpet help to lower?

Carpets are efficient at reducing airborne noise from outside and impact noise, including the sound of footfall and movement, electrical equipment, water pipes, and lifts in apartment buildings. Laying a carpet reduces sound reverberation and absorbs ten times more airborne noise than other flooring types.

Another excellent method of reducing noise pollution is to use carpet underlay, and it is also a lot less expensive than having your house properly soundproofed.