Performance-and-Building-Science
Why Thermal Bridging Is a Problem in Many Homes
Last Updated: April 29, 2026Short Answer Thermal bridging occurs when heat escapes through structural elements, reducing insulation performance and causing cold spots inside the home. Overview Even with good insulation, a home can still lose heat through weak points in the structure. These weak points are known as thermal bridges. Key Points Thermal bridging happens around wall framing, window...
How Mechanical Ventilation Improves Indoor Air Quality
Last Updated: April 29, 2026Short Answer Mechanical ventilation systems provide a continuous supply of fresh air while removing stale, moist air, improving indoor air quality without losing heat. Overview Everyday living generates moisture and pollutants through cooking, showering, breathing, and drying clothes. Without proper ventilation, this builds up inside the home. Key Points A heat recovery ventilation system extracts...
Why Airtightness Is Important in Energy Efficient Homes
Last Updated: April 29, 2026Short Answer Airtightness reduces uncontrolled air leakage, helping maintain indoor temperatures, improve energy efficiency, and prevent draughts. Overview Most homes allow air to leak through gaps in the building envelope. While this might seem minor, it can significantly impact comfort and performance. Key Points Airtightness reduces heat loss, eliminates draughts, improves temperature consistency, and supports...
What Insulation Levels Should a Modern Home Have?
Last Updated: April 29, 2026Short Answer Modern homes should aim for insulation levels well above minimum building code requirements to achieve consistent comfort and improved energy efficiency. Overview Building code sets minimum requirements, not optimal performance. Homes designed for comfort and efficiency typically exceed these minimums significantly. Key Points Standard homes meet minimum R-values and focus on compliance. High-performance...
Why Insulation Matters in New Zealand Homes
Last Updated: April 29, 2026Short Answer Insulation slows the movement of heat in and out of your home, helping maintain a more stable indoor temperature and reducing the need for heating and cooling. Overview New Zealand homes have historically been under-insulated, leading to heat loss in winter and overheating in summer. Insulation is one of the most important components...