Your access to the Low Impact Development (LID) Consulting online calculator is conditional upon your acceptance and compliance with this Disclaimer. Your use of the website constitutes your acknowledgement that you have read and agreed to this Disclaimer. These calculators are populated by data from the listed sources. Low Impact Development (LID) Consulting accepts no responsibility for the interpretation and/or use of this data (incl. correct and/or appropriate entry of data in the tables, or the figures in the tables). To the maximum extent allowable under the law of Australia, neither Low Impact Development (LID) Consulting, nor its employees, or agents shall be liable to you, or any third party for any loss, damage, claims or costs suffered by you or any third party whatsoever from your use of this website, or reliance on the data in these tables, calculators and software contained on it. The data is provided ‘as-is’ without any warranty, express or implied, and/or representations of any kind. Use of these calculators is entirely at your own risk. The raw figures are taken from the BCA, AIRAH Handbook 2007, ICANZ manual, AS/NZS 4959.1:2002 with interpolation as appropriate, or suppliers figures where indicated. Figures from independent sources were preferred, but when unavailable, suppliers figures have been used. This calculator has been prepared in consultation with RMIT’s Centre For Design. Low Impact Development (LID) Consulting accepts no responsibility for the ultimate accuracy of these figures and recommends values to be read to the closest 1 decimal place only as NCC/BCA “required R values” are. Furthermore, The Centre for Design at RMIT University makes no claim as to the accuracy or authenticity of the data, and does not accept liability to any person for the information provided in or incorporated on this website by reference.