Launched in late September 2018, the new Resene Construction Systems INTEGRA Intertenancy System has been extensively tested to meet the rigorous requirements of fire resistance and acoustic control for intertenancy walls.
The Resene Construction Systems INTEGRA Intertenancy System comprises a carefully designed wall build-up; an INTEGRA lightweight concrete panel forms the core, followed by timber framing, a cavity, insulation and a plasterboard lining. A key component of the system is a proprietary bracket attached from the core panel to the framing. The bracket is isolated by a dampener which has been designed to reduce sound transmission.
Acoustic testing of the system was undertaken by Acoustics Testing Services at the University of Auckland. Testing involved building the full intertenancy system build-up in between two enclosed chambers. Sound was created in one chamber and measured in the other chamber to determine the level of sound transmission from one room to the other.
Using the intertenancy system build-up with two layers of GIB Standard plasterboard achieved an impressive STC rating of 67 (total wall thickness of 310mm), while a slimmer wall build-up using just one layer of GIB Standard plasterboard achieved an STC rating of 64 (total wall thickness of 290mm). Each of these ratings far exceeds the minimum rating for intertenancy walls of STC 55 to ensure a comfortable acoustic environment in high-density developments.
In addition to excellent acoustic performance, the new intertenancy wall system from Resene Construction Systems achieved a 120 minute fire rating and meets the NZBC requirements for B1 Structure and B2 Durability. The system can be used for intertenancy walls up to 12m in height.
The Resene Construction Systems Intertenancy System is an exciting addition to the NZ market, offering designers a new high-performance option for intertenancy walls suitable for apartments, townhouses, hotels and office complexes.