Patent & Quality certification
“Building System patent n° 0001346825”

Our products are guaranteed by certification
that state an average dejection of 26db on the external noise.

Acoustic insulation improvement:	Man perception:
0 - 2 dB	not audible
3 - 5 dB	barely audible
6 - 10 dB	sensible improvement and clearly audible
11 - 20 dB	big and persuasive improvement
beyond 21 dB	very important and significant improvement