Different systems different numbers.
Iic ratings for carpet.
The iic rating is the determined by using a standard tapping machine with five steel faced hammers to strike a test floor material generating sounds between 125 hz 4000 hz.
Resilient flooring containing a foamed layer yields a higher better iic rating than one without it.
Insulation ratings for flooring what s behind the numbers.
The higher the rating the less sound gets through.
One leaf each face iic are determined in a special laboratory 1 2 3 2.
As you can see the choice of subfloor ceiling system combined with the type of flooring structure has a major affect on the value of the impact sound.
It all begins with how sound is generated and the medium it transfers through.
The impact insulation class iic rating is a measurement of sound transmission from the floor to a room beneath it.
Iic values and our floors recently we have received inquiries from builders and architects about impact noise ratings of resilient flooring over suspended concrete slabs and over lightweight concrete capped wooden subfloors in multi story.
An iic rating 50 means that the flooring material has minimal sound absorption capabilities.
The main test done by flooring industry is the impact insulation class iic ad sound transmission class stc.
When evaluating flooring underlayment sound deadening and acoustical ratings are one of the things homeowners or hoa considers.
So before asking for a product with an iic rating we need to know what the subfloor ceiling system is.
The thicker the system the better the iic rating.
But when you compare products look beyond the number.
Two leaves each face setting.
Three leaves each face sound from the source room is transmitted 1 2 3 4.
Further complicating matters is the effect that poor construction techniques may have on the field iic performance of your flooring assembly.
It is also one of the most controversial and confusing topics a homeowner strata council architect or designer will ever encounter.
A midrange level is iic rating 60 which includes some vinyl flooring as well as wood and laminate floors.
The highest rating is iic rating 65 which includes cork flooring and carpet.
The single number ratings stc and 1 2 3 1.
Higher end units often expect iic ratings between 55 65.
The more multifamily unit houses that are built the more important acoustic testing insulation ratings sound ratings becomes.
This setting is designed so that all 1 2 3 3.