AJ Climate Champions

Material passports and Architects Declare four years on

Ep 43. AJ Climate Champions with Hattie Hartman and George Morgan. London Eye architect Julia Barfield explains how the climate emergency changed the way her practice, Marks Barfield, operates, as well as what’s ahead for the Architects Declare movement.

Julia shares insights from recent projects on how to achieve circularity in retrofit, the challenges of stockpiling materials for reuse  and how Orms’ material passports can be adapted for retrofit. ‘We must treat all materials as the precious resource they are,’ she says.

She talks about her practice’s Stirling Prize-shortlisted Cambridge Mosque, which is part of a Built by Nature-funded post-occupancy study evaluating the quality of life and performance aspects of five CLT buildings.

We also speak to Julia and fellow Architects Declare steering group member Zoe Watson about what AD has achieved four years on as well as its current workstreams, including climate emergency training for design review panels and Meet the Steering Group sessions where AD signatories can seek practical advice on how to further sustainable design within their own practices.

As part of an ambitious strategy for change, AD is launching a three-part roadmap aimed at equipping Government policymakers with practical and impactful policies to reduce emissions, kickstart the circular economy and restore social and natural infrastructure.  AD plans to launch its document in Parliament in 2024.

For show notes and to catch up on all AJ Climate Champions episodes, click here

Architects must re-educate themselves on timber sourcing

Episode 42. AJ Climate Champions with Hattie Hartman and George Morgan. Montreal-based architect and systems thinker Scott Francisco explains why architects must educate themselves to understand the nuances of timber sourcing.

Francisco believes that greater use of timber in construction in coming decades will be essential to meet our climate targets. This in turn means an increase in plantation forestry, but this can be achieved without compromising biodiversity. 

He also explains why it’s crucial for designers to have a holistic understanding of the timber supply chain. While timber certification is important, relying on certification alone is not enough. He outlines the range of factors that impact the carbon footprint of timber and how to understand different sourcing strategies.

Architects can play an important role in specifying ecological timber by asking the right questions and educating themselves to understand that specifying a species and a grade is not enough. In some instances, particularly on smaller projects, architects can construct a timber value chain for a particular building.

For show notes and to catch up on all AJ Climate Champions episodes, click here.

Architype’s Ann-Marie Fallon: ‘Net Zero has almost lost its meaning’

Episode 41. AJ Climate Champions with Hattie Hartman and George Morgan. In this episode, AJ100 Sustainability Champion and Architype associate director Ann-Marie Fallon discusses her belief that delivering net zero is not just technical – understanding how people use buildings and their role in the community is crucial.

We also hear about Architype’s success in influencing policy changes in Scotland, including a Passivhaus equivalence standard for all new housing. Fallon describes the growing community of architectural practices in Scotland pushing for more sustainable outcomes.

Fallon has been instrumental in developing a ‘blended’ approach to retrofit through a nuanced study of the city of Edinburgh’s estate of 300 buildings with a wide variety of building typologies from different eras. This holistic approach involves everything from exploring whether the activities in a particular building can be consolidated and intensified to the nitty gritty of updating mechanical plant. 

For full show notes to this episode, go to www.architectsjournal.co.uk/podcasts

‘We apologise for designing buildings that exploit the planet’

Bonus episode. AJ Climate Champions with Hattie Hartman. During an Obel Award panel at the UIA conference in Copenhagen, Heringer seized the opportunity to ask the global audience for ‘forgiveness’ on behalf of architects of the global north.

‘I'm sorry for creating this … ideal of an architecture that was supposed to bring us a comfortable, safe and happy and healthy life, when in fact, it was just exploiting the planet and adding to social injustice,’ she said.

Winner of four important awards since our last interview in episode 6, Anna explains how earthen architecture is gaining traction and describes her ongoing work in Ghana and at the St Michael Campus for Sustainability in Traunstein, Germany.

For show notes to this episode, go to www.architectsjournal.co.uk/podcasts

Chinese architect Xu Tiantian on revitalising rural villages

Episode 40. AJ Climate Champions with Hattie Hartman. In this episode, we explore the global phenomenon of shrinking villages in the countryside, hearing about a remarkable series of interventions in southeastern China by DnA_Design, a small Beijing practice. 

Xu advocates a role change for architects in both rural and urban contexts. Architects should no longer accept a commission as given, but take the initiative and evaluate a project’s regional context to make a proposal that is unique and rooted in its place.

In less than a decade, Xu and her team have built more than 20 projects that vary widely in programme and materiality: a tofu factory, a museum, performance spaces and a sugar factory. These projects have attracted new residents back to formerly dilapidated villages by creating jobs and a sense of purpose in these forgotten places.

CHRISTMAS GIVEAWAY Win a copy of Greta Thunberg’s The Climate Book (Penguin 2022). We have two copies to give away. To enter the prize draw,  email hattie.hartman@emap.com with your name, address, affiliation and a testimonial about the podcast before 15 January 2023. We will choose the winners in the new year.

For show notes to this episode, go to www.architectsjournal.co.uk/podcasts

Historic England’s Morwenna Slade on why a ‘fabric first’ approach must be used with caution in heritage buildings

Episode 38. AJ Climate Champions with Hattie Hartman. Slade, head of historic building climate change adaptation at Historic England, explains why insulation is the area of highest risk.

As a conservation-accredited building surveyor with deep interests in both the natural and built environment, Slade explains the role of Historic England as a statutory consultee in planning, in provision of technical guidance and training, and in research to confront upcoming climate challenges. In this episode, she argues that sustainability and conservation are ‘well-matched’ to deliver change on the ground.

Slade also details the range of guidance and webinars available from Historic England, as well as the current research agenda which includes ‘hazard mapping’ of regional risks. This involves granular mapping of overheating, flooding, slope collapse, shrink-swell capacity and storm exposure under different emissions scenarios and their implications for the built environment.

For show notes to this episode, go to www.architectsjournal.co.uk/podcasts

Adapting conservation area guidance for climate emergency

Episode 38. AJ Climate Champions with Hattie Hartman.In our second episode exploring how sustainability impacts heritage buildings, we speak to Procter-Rihl Architects’ Chris Procter, lead author of ACAN’s Climate Emergency Conservation Area Toolkit – England. Chris explains how conservation areas can streamline the consent process by developing a pattern book approach to building elements.

Chris’ detailed audit of Islington’s Cross Street Conservation Area found that two-thirds of existing single-glazed windows could be suitable for double or triple-glazing, 44% of solid external walls could be wrapped in external wall insulation and over 30% of roofs could be fitted with solar panels.

Chris also delves into the sensitive topic of window replacement, arguing that if existing windows do not conform to the original window pattern of a building, they should qualify for upgrading. He advocates development of a pattern book of details, complete with approved manufacturers, to simplify the consent process for building owners, relieve planners’ workloads, and speed up retrofit. Chris argues that this should be done locally based on specific building types.

For show notes to this episode, go to www.architectsjournal.co.uk/podcasts

Balancing heritage and climate urgency in listed buildings

Episode 37. AJ Climate Champions with Hattie Hartman. 5th Studio co-founder Oliver Smith shares his radical approach to upgrading listed buildings. He talks about the practice’s radical retrofit of New Court at Trinity College, Cambridge. Completed in 2016, New Court remains a trailblazing project because it pioneered an ambitious sustainability agenda in a Grade I-listed building using a nuanced approach that balanced heritage concerns with upgrading thermal and energy performance and internal comfort. 

For show notes to this episode, go to www.architectsjournal.co.uk/podcasts

Educators Sofie Pelsmakers and Cíaran Malik on teaching climate literate design

Episode 36. AJ Climate Champions with Hattie Hartman. In this episode, Pelsmakers argues that teaching values must be at the heart of architectural education. She believes students are bombarded with too much technical information on sustainability and that a strong grounding in architectural ethics is essential in order to apply technical knowledge for the best possible built environment and social equity outcomes. This approach requires not only new curriculum content, but a shift from master-apprentice to more democratic and inclusive peer-to-peer learning.

Sharing insights from having taught recently in seven different schools of architecture, structural engineer and educator Cíaran Malik notes that curriculum reform has not kept pace with students’ demands for change and that retrofit remains a minority topic. Malik argues that once students develop an intuitive understanding, grounded in evidence, they can begin to experiment with results that are both ‘beautiful and exciting.’

For show notes to this episode, go to www.architectsjournal.co.uk/podcasts

The trade-off between ventilation and airtightness in the post-pandemic world

Episode 35. AJ Climate Champions with Hattie Hartman. Environmental engineer Patrick Bellew of Atelier Ten shares insight from having worked on high-profile architectural projects, including the new Google HQ at King's Cross designed by Heatherwick Studio. He explains that post-pandemic ventilation rates in commercial offices have tripled with radiant solutions replacing blown air systems, and how this can be done while still controlling energy use. 

For show notes to this episode, go to www.architectsjournal.co.uk/podcasts

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