News & Articles

Well-built high-performance buildings need mechanical ventilation. Times have changed, nobody’s really arguing about this any more. But all the other homes built in the last 50 years need mechanical ventilation...

Mechanical ventilation everywhere: not just high-performance buildings

by Jason Quinn

Updated: Feb 2021

Recently my son asked me if I’d ever been scanned. (He was really interested, which is becoming less common when I’m speaking now he’s 12.) At first I couldn’t think...

Don’t get scammed

by Jason Quinn

Updated: Feb 2021

How do we (“we” being those who care about high-performance buildings and all the benefits they deliver to people and the environment) bring about the change we want to see?...

Taking the Passive House story to the people

by Jason Quinn

Updated: Jan 2021

This analysis from The NewStatesman, comparing Vienna’s tradition of social housing to the UK, is a concise and insightful account and I recommend you go and read it in its...

Social housing, re-imagined

by Jason Quinn

Updated: Jan 2021

More Passive House units have been completed in Exeter in the United Kingdom: what a start to the new year for the lucky social housing tenants who are moving in...

City Council: we will build 500 PH units in 5 years

by Jason Quinn

Updated: Mar 2026

The first time you do something, it takes longer. If you’re paying staff to do it, it costs more again. If you import just one new building component and you...

Social housing can be very good and not cost more (it’s proven)

by Jason Quinn

Updated: Dec 2020

I’ve heard (unofficial) news out of Wellington suggesting the new government is serious about a ‘wood first’ procurement policy for government buildings. Stand by for an official announcement. It can...

New government serious about ‘wood first’

by Jason Quinn

Updated: Mar 2026

If you missed this in-depth Stuff article, it’s worth reviewing: Infometrics senior economist Brad Olsen used the latest census data to find where in New Zealand, on average, has the...

Wellington worst place for damp, mouldy housing

by Jason Quinn

Updated: Nov 2020

Advances Toward a Net-Zero Global Building Sector is a BIG tech paper, happily published with open access so people outside of academic institutions can actually read it. See below for...

Toward net-zero building: put this paper on your reading list

by Jason Quinn

Updated: Mar 2026

Rochelle Ade’s doctoral research findings have had quite a bit of media attention in recent weeks. Not surprising, given her claim that Homestar ratings aren’t delivering what they claim (and...

Small improvements are not enough

by Jason Quinn

Updated: Nov 2020

Fire rating of the building/windows is not something we usually need to worry about in new, detached single-family homes, as the clearance to the property boundaries is sufficient. But during...

Retrofit alert: know when fire-rated components are called for

by Jason Quinn

Updated: Oct 2020

We go to great lengths to maintain the certified level of MVHR efficiency in the high-performance building projects we consult on. We recommend or specify cross-counter flow heat exchangers with...

Local MVHR only 40% efficient, says BRANZ test

by Jason Quinn

Updated: Oct 2020

If Leaky Buildings 1.0 was about rain getting in where it shouldn’t, then Leaky Buildings 2.0 is all about the build-up of condensation, such that it feels like it’s raining...

Interior condensation should be expelled from school

by Jason Quinn

Updated: Oct 2020

Holy sh*t. Talk about a big shift in perspective. Let’s repeat that: “BRANZ now recommends that residential buildings are mechanically ventilated and are built to an airtightness target.” This comes...

BRANZ sees the light on mechanical ventilation

by Jason Quinn

Updated: Oct 2020

SIP manufacturer Formance has released a technical bulletin for designers focused on how to specify or calculate Formance panel performance for certified Passive House projects. The bulletin is based on...

Technical guidance for Formance SIP in Passive House projects

by Jason Quinn

Updated: Oct 2020

Great to see Tim Ross of Architype guiding James Shaw around the building site of the Dunedin co-housing project. When this project is completed next year, it will (if it...

Green co-leader backs Passive House and co-housing

by Jason Quinn

Updated: Oct 2020

Christchurch City Council’s urban design team has turned in a report that looked at 46 housing developments built since new rules were introduced in 2016 to allow for greater housing...

Focus on performance not just appearance in the Christchurch rebuild

by Jason Quinn

Updated: Sep 2020