Noise Reduction

Block Noise with  Inserts

Bothered by Noise?

Need to reduce noise coming into your home or office? Bothered by outside noise from
neighbors, traffic, trains or construction? Noise keeping you from sleeping well? We get it.
By adding Indow inserts to your existing windows you will be amazed at how much noise is
reduced. Reducing noise coming through windows has never been easier.
Traffic noise on neighborhood
Train making noise
Construction site noise near buildings

How Indow Inserts Reduce Noise

Indow inserts can dramatically reduce noise coming through either single-pane and double-pane windows.

The air-gap between the internal acrylic insert and the glass window helps create "dead-space" which helps dampen the noise from traffic, trains, planes, voices and construction sites.

Additionally acrylic blocks noise better than glass and 1/4 inch acrylic performs even better than 1/8 inch acrylic.
Solution for noisy drafty windows

STANDARD 1/8 inch thick Indow inserts will block out 50% of the noise coming through single-pane windows.

ACOUSTIC 1/4 inch thick Indow inserts will block out 70% of the noise coming through single-pane windows and 50% coming through double-pane.

COMPARISON: Replacing single-pane glass windows with double-pane glass windows will  only result in a noise reduction of about 25%.
70% noise reduction Indow Acoustic Insert

STC Ratings

STC Ratings Explained

STC rating (Sound Transmission Class rating) is a way to rate how well an assembly of materials reduces sound.  Assemblies of materials reduces sound through absorbing or reflecting sound waves.  The higher the rating, the less noise penetration.  STC rating scale goes from 20 to 65.   A rating at or lower than 25 is considered low or no soundproofing and at and above 65 as being soundproof where no sound can penetrate.
STC Ratings Indow Sound Reduction

                                                                        Other Sound Transmissions Defined

These terms and definitions are related to Sound Transmission Class and will help provide the
full picture of how sound is measured.

dBa – A-weighted decibels. Measurement of sound as perceived by the human ear. Decibels
relate to all sound possible (that can be perceived by say, a dog). A-weighted decibels are a
scale of measurement for all sound that can be heard by humans, starting with zero as the
lowest threshold of human hearing and going up to 110 dBA for jet fly-over/indoor rock band.

Transmission Loss – How much sound is lost going through a material. When sound
reaches an object, some of the noise vibrations are reflected by it, some are absorbed, and
some travel through it. The amount of sound that does not travel through it, is considered
loss. It is the difference between the sound going into the object and the sound coming out the
other side.

Frequency (Hz) – Sound is vibrations that travel through the air. Frequency is the speed of
the vibrations. Frequency is measured in units of Hertz (Hz). Hertz measure the number of
wave cycles per second. Low frequency sounds, like thunder or a train, would have a lower
Hz. High frequency sounds, like a whistle or a bird chirping, would have a higher Hz.

While STC rating can provide a good indication of how a material or product will perform
against sound in general, it isn’t the whole picture. That’s why it’s good to keep these other
definitions in mind. Certain sounds or noises will affect different people differently. STC rating
is one number that shows general sound resistance, but does not take Hz into account.

                                                                                 STC Rating Limitation

STC is a single number used to describe the ability of an assembly (how a product is put
together) to reduce noise against a wide range of frequencies. An STC rating alone won’t
show what Hz will be blocked. STC rating only gives you an overall average of noise blocking.

Different products work differently to block different noise so you must compare exact product
assemblies to each other (e.g.: a double-pane window with the same air gap). Talk to the
manufacturer about what their product can block if you are having issues with a particular
noise (e.g.: dog barking, a train horn).

                                                                                   Customer Testimonial 

"I have metal framed double-pane windows that let in a lot of road noise.  Due to the historic exterior architecture limitations and cost, replacing the windows with triple-pane windows was not feasible.   The Indow acoustic inserts made a noticeable difference in the reduction of road noise".

Douglas P. - The Fan District - Richmond VA

Interested in blocking as much as 70% of the noise coming through your windows?

Contact us today!

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