If the assessment method is a” Deemed to Satisfy – Elemental Provisions assessment” (DTS), then under BCA 2009 (allowed in NT and QLD if certain conditions are met), no insulation is required in the following situations (assuming the walls achieve a surface density of not less than 220kg/m2 (190 x 140 x 290mm and above achieve this)): A competent Energy Assessor can advise you whether insulation will be likely to be needed for your project, and assist you with the levels required in order to achieve the 6.0 Star Rating.
#INSULATING CONCRETE BLOCKS SOFTWARE#
If the assessment method is a NatHERS Software (6 Star Rated) Assessment, or the lesser used “Verification using a Reference Building”, then it is possible to achieve the 6 Star Rating in warmer climate zones without insulating the concrete block walls, as long as compensation is made with appropriate roof/ceiling insulation, good shading and orientation, appropriate glazing, and ventilation etc. If the building is Residential, then it depends on the answers to the next two questions:Ģ. If the assessment is undertaken via JV3, then it is possible for the walls to be uninsulated, but compensations would need to be made via increased roof/ceiling insulation, good shading and orientation, appropriate glazing etc. The exception is if the wall is an earth-retaining wall, then it is not required to be insulated. If the only space for insulation is providied by a furring channel or batten, then the requirements are reduced, but additional insulation will still be required. The non-conditioned zones (such as un-conditioned toilets, store rooms etc) are not required to achieve a minimum R-Value for the building envelope walls.įor walls surrounding conditioned zones (or zones likely to be conditioned), the walls will require additional insulation. If the building is Commercial, and an assessment is undertaken via the Section J Deemed to Satisfy Method (as opposed to a JV 3 Assessment), then only the conditioned zones are required to be insulated. Is the building Commercial or Residential? But for simplicity we will attempt to do this.ġ.
#INSULATING CONCRETE BLOCKS CODE#
Whether Concrete Block external walls require insulation to comply with the Energy Efficiency Provisions of the National Construction Code and the relevant State & Territory legislations depends on three main factors:Īll these interplay with each other, so it is difficult to discuss them independendently. Yes, yes, sometimes, possibly, no and yes. A client recently asked if they could build with concrete block (or Besser Brick) external walls without having to insulate them.
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