Gyprock Boundary Wall systems have been developed specifically to meet the needs of developers and builders of high density Class 1a buildings. These systems evolve, if and when required, from a single boundary wall into a double boundary wall system that performs like an inter-tenancy wall, allowing for non-sequential development of attached dwellings.
Traditional construction methods require an entire ‘block’ of attached dwellings to be built as one, with the inter-tenancy walls lined as interior walls, after the roof and exterior walls are completed. With the Gyprock Boundary Wall system, individual units can be completed before the construction of adjoining units.
System advantages
- Meet BCA requirements for an external wall
- Space efficiency maximises internal space
- Can be built without access from the adjoining property
- Range of lining options to meet performance requirements
- Boundary walls can evolve into intertenancy walls with class leading BCA compliant acoustic performance
- Allows stage financing and sales with individual titles
- Maximises land use
System performance
Gyprock Boundary Wall Systems provide the fire rating, thermal performance and weather resistance properties required by the BCA for external walls. With the addition of a second wall system, they also meet the acoustic requirements for an intertenancy wall.
Fire resistance
The Gyprock Boundary Wall systems meet the 60/60/60 FRL fire performance required by the BCA. The fire protection is principally provided by the inclusion of Gyprock Fyrchek™ MR between the frame and the exterior cladding.
In areas where internal linings are interrupted or not present (for example, in the roof space or floor framing connection areas), additional fire protection is used in the wall cavity.
Acoustic performance
Gyprock Boundary Wall Systems, in adjacent buildings, together achieve or exceed separating wall acoustic performance set out by the BCA.
While the BCA does not mandate acoustic performance requirements for external walls built on separate lots or titles, neighbouring inhabited dwellings often experience loss of occupant amenity due to the transmission of nuisance sounds across reduced boundary setbacks. Some building authorities now recognise the inherent risk of amenity loss in zero-lot- line development styles, and mandate minimum external wall acoustic performance above BCA requirements. Enhanced performance can be achieved by the selection of high-performance Gyprock linings and insulation.
System design
Single Timber Frame Wall Typical Layout
Double Timber Frame Wall Typical Layout
System components
Gyprock Party Wall systems include a range of lining, insulation and accessory options to be determined by the designer in order to achieve different performance requirements. Only those product options specified should be used in order to guarantee the fire and acoustic performance of the system.
Aquachek™ 10mm
A versatile 10mm plasterboard featuring a high-density core and heavy-duty liner paper.
Gyprock HD
A versatile 10mm plasterboard featuring a high-density core and heavy duty liner paper. Formulated to contain 10% recycled content.
Fyrchek™
Provides sound control in residential and commercial applications.
