Research shows airtightness has a greater impact on a home’s energy use than any other single factor. If you want a home that performs well year-round, start with airtightness.
Airtightness is one of the simplest and most powerful ways to improve comfort, health, and energy efficiency in your home, but most people don’t realise just how big a difference it makes.
Research worldwide shows that homes with certified energy-efficient features sell faster and for a premium. Buyers want proof, not just promises.
Clause D.1.13.1 is holding back smarter, more affordable buildings in New Zealand. Learn how allowing airtightness modelling could rebalance H1.
Learn how airtightness and the building envelope work together to reduce energy loss, control moisture, and improve comfort
Clause D.1.13.1 is holding back smarter, more affordable buildings in New Zealand. Learn how allowing airtightness modelling could rebalance H1.
Transforming Old Homes Without the High Costs: New Zealand’s older homes represent a major opportunity to improve energy efficiency, health, and durability.
Over 96% of NZ homes fall below safe indoor temperatures. It’s not just about insulation – airtightness is the key to healthier, warmer living. Learn what’s really going wrong and how to fix it.
Discover why airtightness is key to warmer, healthier New Zealand homes. Backing John Tookey’s expert advice, we explain how reducing air leakage improves comfort, lowers energy use, and stops heat loss.
Discover why energy-efficient homes are in high demand. New data shows they sell quicker and fetch an average of $118,000 more. Learn what’s driving buyer interest in 2025.
Research shows airtightness has a greater impact on a home’s energy use than any other single factor. If you want a home that performs well year-round, start with airtightness.
According to ENERGY STAR®, the U.S. Environmental Protection Agency’s trusted energy efficiency program, air leakage can account for 25–40% of the energy used for heating and cooling in a typical home. Air leakage doesn’t just waste energy—it also reduces indoor comfort, allows in moisture, dust, and pollutants, and increases the risk of mould and structural damage.
