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Five to Six Star : Five to Six Star
31 Conclusion The estimated cost of increasing the building thermal performance of the case study buildings from 5 to 6 Star was often linked to the quality of the passive solar design. All case studies were considered from the perspective of a builder with limited scope to alter the design. Therefore, poor designs were going to be more expensive to modify in order to achieve the required standard. It is much easier to reduce the build costs associated with achieving the 6 Star Standard by having the plans rated earlier in the design process or by working with designers that are familiar with passive solar design principles. Good orientation, appropriate shading and the inclusion of thermal mass contribute the most to thermal performance and these factors can usually be integrated at little or no cost at the early design stages. 8 Quick Tips For Increasing Your Star Rating Waffle pod slabs can increase the rating by 0.1 to 0.3 of a star. • Double glazed windows can add 0.6 to 0.8 of a star. • Sealing the external doors and using sealed exhaust fans can add 0.5 • of a star. Sealing the brick veneer wall cavity can improve ratings on timber • floored houses by 0.5 of a Star. Simple shaped buildings help to improve the rating performance. • Orientate the living areas to the north side of the home. • Zoning of rooms can increase the rating. • Avoid excessive glazing. •