• An interior acoustic flooring system.
• Intended for installation in conjunction with a substrate that complies with the building code (new build) or where the substrate is suitable for the intended building work (retrofit). Substrates include: CLT, PLT, timber and steel framing, concrete (precast or in‑situ), cassette floor systems .
• Depending on assembly can satisfy NZBC Clause G6 (Airborne and Impact Sound) in intertenancy/mid‑floor situations.
• Able to be used in all situations up to a point load of 5kPa.
• Level-entry showers and wet areas can be installed in conjunction with Endurabase Flex System.
• Fire-stopping battens simplify the installation of fire doors
• Can be used in conjunction with specified suspended ceiling systems

• Must be specified, installed and maintained in accordance with all applicable technical information
• Insulation minimum thickness of 50 mm and density of 14.7 kg/m³ must be maintained
• Only specified flooring toppings are permitted—OSB/3, Magnedure, or fibre cement; substitutions are not allowed
• Installation must be carried out or supervised by an LBP.
• Acoustic performance depends on the assembly — refer to SoundDown for tested assemblies.
• Where G6 compliance is required and the assembly is not part of SoundDown’s tested assemblies then on-site testing or expert opinion is required.

The SoundDown Tranquillo Acoustic Flooring System, if designed, installed, and maintained in accordance with SoundDown's technical documentation, may comply with or contribute to compliance with the following performance provisions of the New Zealand Building Code:

• Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2, B1.3.3 (a, b), B1.3.4
• Clause B2 DURABILITY: Performance B2.3.1(a)  B2.3.2(a)
• Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1
• Clause G6 AIRBORNE AND IMPACT SOUND: Performance G6.3.1, G6.3.2

• In use in New Zealand residential and commercial buildings since 2021

• Tested acoustic assemblies (STC 66dB, IIC 60dB)
• Sustainability: Uses NZ-sourced LVL timber, recycled rubber isolation, and insulation with recycled content
• Warranty: 15 year manufacturer warranty on SoundDown acoustic battens; other materials per supplier warranty