When an impact is made on the floor, the impact energy will transfer to the nail to the subfloor. Nailing down your flooring to the subfloor is not the best option. Floor Soundproofing Underlay Types Knowing What Installation Type Of Your Floor Can Steer You In The Right Direction Many larger luxury condo associations and municipalities are now looking at the higher 50’s and lower 60’s range. To meet International Building Code – both IIC and STC need to meet the minimum of 50 to pass. The higher the number, the higher the resistance – the better. The frequencies are calculated by decibel measurements and ratings are calculated by a very complex mathematical formula. So How Are The Ratings Calculated?īoth test involve an apparatus in an upper chamber and a measuring system in the lower chamber. Examples include voices, stereo systems and TV noise. STC evaluates the ability of a specific construction assembly to reduce airborne sounds. Examples include objects falling on floor, kids jumping off couches, tap dancing, anything that stimulates footfall. IIC test the ability to block impact sound by measuring the resistance to transmission of impact noise or structure-born noise. 3.2 Floating Engineered Wood or Laminate Flooring Impact Insulation Class (IIC) Sound Rating
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