For the technically minded...
Professional dB Meter readings with and without Silent Roof system. Move mouse over image for details.
Comparative dB levels.
30dB = Quiet rural area, 1/16th as loud as 70dB
40dB = Library, 1/8th as loud as 70dB
60dB = Pub conversation, music, 1/2 as loud as 70dB
70dB = Traffic noise, vacuum cleaner, annoyingly loud to some people.
Silent Roof system reduces rain noise by more than 20dB.