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www.envirospec.co.nz. Practitioner + Assessor. (+ Trainee NABERS NZ assessor) PMAG member Tool review for IEQ and MAT credits. W E B S I T E. C O N S U L T A N C Y / A S S E S S O R. What’s the programme ?. 1) Homestar Conultant and Assessor hat
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www.envirospec.co.nz • Practitioner + Assessor. (+ Trainee NABERS NZ assessor) • PMAG member • Tool review for IEQ and MAT credits W E B S I T E C O N S U L T A N C Y / A S S E S S O R
What’s the programme? 1) HomestarConultant and Assessor hat > Refresher on Homestar Framework and V2 updates > General guidelines for good performance > Findings after assessing a few apartments 2) Working Example > Lot 4 Vinegar Lane 3) EnviroSpec hat > Successfully specifying for Green Start NZ / Homestar
Why should I bother ? • If buying / Living • Warm, dry, energy efficient • Healthy indoor environment • Good sun orientation • Low water consumption • Garden and landscape benefits • If selling • More attractive to buyers (for above reasons) • Sell quicker • Sell for more money than standard home other factors being equal.
The tool is evolving… V 2 V 1 • Star Bands now simplified and slightly more attainable for 7 star and above • Energy Calculator now 15 points and Energy category now 48% total points available. • Lower weighting for other categories (Sound insulation, Stormwater and Security) • New Responsible contracting points (easier to achieve and more realistic for builder/trades) • > EMP template and use accredited Ecodecorator, Ecoplumber, Ecosmart electrician, etc.
Overall Framework Category Pages Energy , Health and Comfort 6 EHC-1 Space Heating Calculator EHC-2 Hot Water Calculator 4.5 Energy,Health and Comfort 2 EHC-3 Lighting EHC-4 Whiteware and appliances 2 Water 8 EHC-5 Renewables Calculator Materials Mandatory Minimums EHC-6 Whole House Thermal Calculator 15 Waste EHC-7 Moisture control 4.5 Site EHC-8 Washing Line 1 Management 2 EHC-9 Sound insulation Innovation EHC-10 Inclusive design 3
General guidelines for good performance 12 points! Products & Materials
How do apartments and townhouses perform? • Positives: • Generally efficient use of space = positive Resource Allocation Factor • Better thermal buffering for middle apartments • Economies of scale = relatively cheaper per unit • Challenges: • Can get harder to maximise rainwater harvesting and solar (roof space get divided) • Conclusion? • Architects, Developers, Policy setters = Go for Homestar ! It’s accessible and affordable on individual houses to get 6-7 stars and even more so for townhouses or apartments. • Key to success = engage Homestar Practitioner early!!! (beginning of concept design)
Working example First 8 Star certified apartment in NZ Homestar V2 multi-residential Design Rating • Design inspiration – Old Vinegar Works • Penthouse 8 Star – lower apartments 6 star • (Vege garden, Fruit trees, SHW and Solar PV + rainwater harvesting) • Homestar = fun challenge and worth the outcome
3 – Specifying the correct products Hmmm… I wonder if there is an easier way? Successful ESD rated building Start here