NRG Greenboard™ is an insulative walling system suitable for external cladding of timber or steel framed buildings as well as solid concrete and masonry walls. The system provides a weather resistant, seam free rendered finish in a wide range of textures and colours. It also provides continuous thermal insulation over the entire wall. Developed in Germany in 1973, these systems have been extensively used throughout Western Europe and North America where strict environmental laws are in place governing the energy efficiency of both private and commercial buildings. The system is now well established in Australia ranging from dry arid areas, to tropical and alpine regions, whilst proving energy efficiency, cost effective and flexible construction
All building products must comply with the BCA (Building Code of Australia). NRG Building Systems has achieved CodeMark on Greenboard™ Insulated Wall Cladding meaning Greenboard™ complies to the BCA.
NRG Building Systems has tested 60mm Greenboard™ total wall system and the acoustic performance result was Rw35,Ctr-6. Please refer to NRG test results. The Greenboard™ walling system can be further enhanced by using a “sound rated” insulation batt. Please refer to insulation manufacture’s specifications.
Greenboard™ contains a flame retardant additive and will not support fire, it has a spread of flame index of zero. If in a fire situation the toxic fumes are no greater than that of timber and other building materials.
The surface of the Greenboard™ panel is Grooved both sides allowing the inside surface to breathe and channel any possible condensation away through the Grooves, downwards to the base of the wall. This is particularly important where “insulation” or “breather sarking” is used. The additional advantage being that when the Grooved face of Greenboard™ is rendered the system becomes stronger as the render gets into the Groove to form a core shape for better adhesion and a stronger more rigid Greenboard™ system.
Render Level of Finish
Reinforced render is applied to the Greenboard™ substrate at approximately 4-8mm in thickness which allows qualified applicators to screed out usual imperfections and form a seam free level 5 finish. NRG recommends render over Greenboard™ should be specified by a coating manufacturer.
For more information, see www.nrggreenboard.com