All about glass > Acoustic insulation index : R

Europe's most precise sound reduction index for glass is Ratr ( Ratr= Rw+Ctr) often called R and expressed in decibels (dB). We will use this index to state glass acoustic performance. For further information, please contact us.
Some single glazings acoustic values :
                                         

	4 mm	6 mm	8 mm ou Plastofloat 68 (33/2)	10 mm	12 mm ou Plastofloat 128 (66/2)	Plastofloat acoustique 88 (44/2)	19 mm	Plastofloat acoustique 128 (66/2)
R	26*	28*	29*	30*	32*	33,9**	34***	37**

*according to EN 12 758
**Test results, experimental values obtained by our samples, measured according to NF EN ISO 140 specifications
*** calculated values, values calculated simulating the NF EN 140 conditions