Wikipedia – Impact Insulation Class does not have much to add but please feel free to link to them or you can check out As with STC and NRC rating systems, a higher number will make you happier. IIC (Impact Insulation Class) – This rating system was devised to measure a material’s ability to block and/or absorb Impact Noise.The following small table is from Wikipedia – Noise Reduction Coefficient where you can find more information on the subject. How does that happen when 1 is supposed to be perfect?) The rating system is basically a percentage. Specially when I have seen things rated at NRC 1.05. I am way too old and cynical to believe that. A rating of 1 suggests that the material soaks up all of the Airborne Noise. The system rates product between 0 and 1. NRC (Noise Reduction Coefficient) – NRC is a rating system designed to measure a material’s ability to absorb sound.Good soundproofing most sounds do not disturb neighbouring residents. The following table is from Wikipedia – Sound Transmission Class where you can find more information on the subject. A higher STC rating means that whatever you are using blocks more sound from moving through floors, walls, ceilings. STC (Sound Transmission Class) – STC is a rating system developed to measure a material’s ability to block sound.Which will help you make better investment decisions. Knowing a little bit about each of them will make you a more informed consumer. Most soundproofing products will use one, two, or all three of these rating systems. The structural vibrations caused by Impact Noise can generate Airborne Noise in the adjacent rooms–in all directions. Impact Noise is more likely to be heard from below. Please see Designing Buildings Wiki for an expanded explanation of Impact Noise and some of the possible adverse health effects.Īirborne Noise will travel in every direction so it could be annoying in rooms below, above, and to the sides. The sound will travel through floors, walls, and ceilings. Such as someone walking, something being dropped, ball bouncing. Impact Noise (sometimes referred to as Structure-borne Noise) – Sound that travels through the structure of a building.Please see Designing Buildings Wiki for an expanded explanation. Some examples are conversation, TV, music, and external noise such as traffic passing by, dogs barking, kids playing. Airborne Noise – Sound that is transmitted through the air (seems like a fairly obvious definition).Hence, the following information–which I will be using throughout the article. Trusting some guy on a blog (even me–hard as that is to believe) may not be in your best interest. It is your money, your effort, and ultimately, your lifestyle. I am not a big fan of ‘Buy this because I say so.’ type of blog. You are going to install underlayment almost everywhere anyway, so why not upgrade to a higher quality product that provides more, and better, soundproofing?īare with me while I provide enough background information to help you make an informed decision. But if, or when, you decide to replace your floor covering or if you are building a new home, soundproofing the floors should be a serious consideration. As long as you are not terribly concerned about noise. Do I Need Soundproofing Underlayment? Definitions and Ratings Types of Noise Noise Reduction Ratings Soundproofing Underlayment Construction Notes New Home Construction Renovation Flooring Soundproofing Your Flooring Best Soundproofing Underlayment for Rug and Carpet Best Soundproofing Underlayment for Laminate and Engineered Flooring Best Soundproofing Underlayment for Hardwood Flooring Best Soundproofing Underlayment for Tile Flooring Best Soundproofing Underlayment for Sheet Vinyl (Linoleum) Flooring Final Thoughts Do I Need Soundproofing Underlayment?Ībsolutely not.
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