SRP™ WHISPERWALL™ Information and Specifications
The SRP™ Whisperwall™ Stud wall has been developed and manufactured to provide superior acoustic properties with additional fire rated properties in interior wall construction.
It provides significant advantage over staggered SRP™ Stud walls [FIGURE 10] in installation and is test verified for superior acoustic results.
SRP™ Whisperwall™ is configured in 92mm x 42mm from 0.55mm BMT GALVSTEEL® coil manufactured by New Zealand Steel, whenever possible. SRP™ Whisperwall™ Stud is backed by a 50 year Durability Statement to demonstrate compliance with NZBC Clause B2-Durability, when used and maintained as described in the current New Zealand Steel Durability Statement.
In laboratory testing the SRP™ Whisperwall™ Stud Wall achieved an STC 52, STC 58 and STC 62 rating. Refer to TABLE 8 below for relevant GIB Noiseline® configurations.
To achieve the tested STC values for SRP™ Whisperwall™, install Pink® Batts® Silencer glasswool acoustic insulation R1.8 [75mm]* between the SRP™ Whisperwall™ Studs. Cut the width of the Pink® Batts® to suit SRP™ Whisperwall™ Stud centres and ensure the insulation is expanded to fill the cavity.