Performance Related Specification Reference Table
Passive House | PHI Low Energy Building | Healthy Home Minimum | NZBC Minimum |
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Floor | R6.8 190+90mm counter insulated floor framing |
R4.6 210mm between floor framing |
R3.8 190mm batt between floor framing |
Max. R1-1.3 50mm batt between floor framing |
Wall | R4.5 140+45mm counter insulated wall framing |
R3.4 90+45mm counter insulated wall framing |
R5 140mm insulated wall framing |
R2 90mm insulated framing |
Roof | R7.5 210+90mm counter insulated roof framing |
R5.2 210mm insulated roof framing |
R5 210mm insulated roof framing |
R5 210mm batt between/rafter |
Windows | Ave. R1.2 Triple low-e glazing on timber alu composite frame |
Ave. R1.1 Triple low-e glazing on timber alu composite frame |
Ave. R0.5 Double low-e Xcel glazing on recessed thermally broken frame |
Ave. R0.26 Standard double glazing on aluminium frame |
Airtightness | 0.5 ACH under blower door test (air/vapour control layer) | 1 ACH under blower door test (air/vapour control layer) | 4 ACH under blower door test (no air/vapour control layer) | Approx. 6 ACH under blower door test |
Ventilation | Up to 95% heat recovery | Up to 72% heat recovery | Up to 72% heat recovery | Opening window only |
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We do our utmost to insure a smooth and fair transaction for all parties.
Our contracts are balanced and payment terms-based on procurement of materials, technical reports and work completed.
We are not just renders, concepts and ideas on paper, but solid tangible products that have been delivered to our very happy clients. As of September 2023 we have just started work on our 14th build.
Don't just take our word for it, see some of their comments below and learn more about each project at - Árbol In The Wild.