Sound Benefits of Insulation

Arizona has seen some major growth in population over the past decade which has resulted in a boom in new homes.  Housing developments are popping up all over the state creating more and more suburban clusters.  Although it is exciting to be living in a growing city, there are some minor annoyances caused by all of the people.  Traffic is worse, smog is enveloping the city, and neighborhoods are getting noisier. 

Although we cannot offer a solution to your traffic wallows or smog concerns, we can provide some help with the excessive sound in your house.  If you are building a new home or remodeling your house, we suggest you look into installing better insulation. 

Most people associate insulation with temperature control, and although that is its main purpose, certain products can act as a great sound barrier as well.  Spray foam insulation and injection foam insulation can block sound extremely well because the sound waves are absorbed more than they are passed through the material.

But you ask how much does it actually help? Well spray foam has an STC rating of about 37 in a 3.5” wall.  Injection foam has an STC rating of about 53 in a 3.5” wall.  Fiberglass batt in a 3.5” has an STC rating of about 36. In other words, a wall insulated with open cell spray foam will reduce sounds by 37 decibels, injection foam by 53 decibels, cellulose dense pack by 80 decibels and fiberglass batt by 36 decibels. So how much does it help? Think of the sounds you might want to get rid of… like your neighbors yelling and shouting and compare it on this list of typical sounds and their loudness in decibels, and then subtract the appropriate value (37, 53, 80 or 36) and notice the difference it could make.

10                           A leaf falling

20                           Rustles of autumnal leaves

30                           Whispering

40                           Living room, quiet classroom

50                           Refrigerator working, car driving past

55                           Percolating coffee-maker

60                           Sound of human voice, machinery

70                           Television set on loud, vacuum cleaner, several people on the telephone

75                           Busy restaurant around lunchtime

80                           Alarm clock, freight traffic, doorbell

85                           Sawing, mixer

90                           Truck close by, screaming, yelling, shouting

95                           Drill, violin

100                         Machine in a factory, compressor, fighter jet at 300 m

105                         Helicopter close by, large drum

110                         Rock concert, chainsaw

120                         Human voice at its loudest, police siren

130                         Thunder

140                         First Monday of the month siren from close by

150                         Fireworks

160                         Shooting with pistol or rifle

170                         Avalanche firework

180                         Rocket launch platform

194                         Saturn rocket

Although there are more aspects of your home where sound can travel (windows, doors, and halls) insulating your walls properly can significantly help!

Here is a short video showing how spray foam insulation significantly helped this homeowner reduce sound in their converted barn.  (They used more than the 3.5" noted above so the decibel reduction would also increase.)

If you are interested in reducing sounds in your home, we would love the opportunity to earn your
business!