We are building a single story house (drawing attached). We've chosen the following
1. Roof: Colorbond + Bradford Anticon R1.3
2. Ceiling: R3.5 BATTS
3. Wall: Sisalation (Superstrong Breather) + R2.5 BATTS to external walls.
4. Windows: Double Glazed Windows
However, the stackers, a sliding door and window in WIP, sliding door in Laundry are still single glazed that we didn't upgrade due to our budget. Our main concern is Winter (cold).
1. Would there be significant difference in temperature in the living and kitchen area in winter, if the stackers, sliding door and a window in WIP will be single glazed? I mean, how much would be the difference if we upgrade these to double glazed?
2. Should we consider upgrading these to double glazed and downgrading anything else (mentioned above) which we might have upgraded unnecessarily or not that important as these double glazed stackers and a door & a window is? Or is there anything else which is more important than the stuff I mentioned?
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External wall Sisalation detail
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