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PODCAST

Zero Ambitions Podcast

Zero Ambitions is a consultancy and weekly podcast about sustainability and the built environment. We find interesting and experienced guests who know what they"re talking about, usually to discuss how we navigate the complexity of decarbonisation and sustainability in the built environment and its many related sectors. The success of the podcast has seen it grow into a consultancy, Zero Ambitions Partners. The consultancy works with blue chip clients, public sector institutions, and niche-market

society & culture documentary

All Episodes

83:15

Delivering high-density, high-volume, Passive House...

Zero Ambitions Podcast ·

2025/09/23

In this episode, we are joined by Attzaz Rashid (Barratt London) and Joel Callow (Beyond Carbon) to talk about Barratt London's move into Passive House.It was a chance to get into what attracted Barratt to developing this Lo-E homes proposition and how they came to feel confident about committing to deliver certified Passive House apartments, the team effort that's been employed to make it work, and the way this change has brought about a renewed enthusiasm for the job in some of the

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75:48

Reducing the cost of retrofit through collaboration...

Zero Ambitions Podcast ·

2025/09/09

Is there a collaboration problem in retrofit within the social housing sector? That was the premise for this conversation with Rafe Bertram, an architect and retrofit expert—appearing in a personal capacity—who was very surprised when I posed the question because he's found collaboration to be a strength in the sector, at least in London.In the end it led to a conversation about what he's learned from the experiences he's had working on retrofits in the social housing sector, in his

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72:34

Circularity, supply chains, and bringing a bio-based...

Zero Ambitions Podcast ·

2025/08/25

This episode is all about case study in circularity and a group of people turning waste into useful materials for the built environment. Daniel Dinizo and Charmaine Cu-Unjieng of NaturLoop are bringing a new bio-based product to market that transforms waste coconut husk into a material that's something between MDF and a particle board.For us, this presented a chance to talk about how sustainable materials are developed, the challenges of bringing them to market and how responsible

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75:15

Greening homes and creating growth—the UK finance...

Zero Ambitions Podcast ·

2025/08/12

In this episode we are exploring the relationship between financial institutions and the built environment in relation to sustainability, building performance and mitigating climate change with Ian Bhullar and Ronnell Reffell from UK Finance, the UK financial sector's membership organisation.The episode itself was prompted by a report that UK Finance published in relation to the incoming UK Government's own Warm Homes Plan: Greening Homes, Creating Growth: Unlocking demand for green home

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85:19

Big plans for tackling non-residential retrofit, with...

Zero Ambitions Podcast ·

2025/07/29

We're joined by our new friends from Building Atlas, Nick Taylor and Olga Khroustaleva, who join us for a conversation about commercial retrofit—the non-residential kind. They’ve got a data driven business Building Atlas that helps commercial asset owners to plan pragmatic retrofit pathways for commercial real estate.This isn’t just important because of how much energy the non-residential sector consumes, it’s also because 70% of non-residential building assets are on course to become

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73:55

Prescription heating and experiments for a just...

Zero Ambitions Podcast ·

2025/07/14

In this episode Rose Chard joins us to describes her multilayered and multi textured approach to innovation and research. It's a conversation about Energy Systems Captapult's experiment in prescribing heating to keep people warm—that's pretty much it, but there was a lot to talk about.Notes from the showRose Chard on LinkedInThe Inclusive Smart Solutions project that Rose mentionsWarm Home Prescription® Insights and Impact Report (July 2024) by Energy Systems CatapultWarm Home Prescription

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86:39

Impact, innovation, and investment: how VCs aren't a...

Zero Ambitions Podcast ·

2025/06/30

In a slight departure from our usual building performance themes joining us for this episode we have Richard Muscat, a man who has experienced the world of investment and tech from a fascinating range of angles and is seeking ways to do things differently.In essence, we’re looking at the way venture capital and climatetech are organised in ways that aren't conducive to delivering the impact that's promised. We're not just picking on VCs, we're using them as a means of highlighting a bunch

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81:00

Zero Bills Homes: a new building standard for...

Zero Ambitions Podcast ·

2025/06/16

In this episode we're talking about Zero Bills Homes, so we welcome back Nigel Banks, this time accompanied by his Octopus colleague Emma Fletcher*.We're not directly talking Fabric Fifth again but the concept is central to the Octopus zero bills strategy i.e. prioritising decarbonising energy use and reducing the cost of energy use rather than focusing on reducing energy demand through fabric measures. As before, basic fabric standards are required in order to make the proposition

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89:55

Retrofit rescue: lessons learned from a fixing...

Zero Ambitions Podcast ·

2025/06/02

This episode is all about a retrofit programme gone wrong in Preston and the effort required to fix it. It's a story that was covered in the pages of Passive House Plus back in 2018 under the headline "Disastrous Preston retrofit scheme remains unresolved" and until recently we thought it remained unresolved.We're joined by Filipe Amarante and Joanna Curtis to talk about the Preston Retrofit Catastrophe and all the work that National Energy Action has been doing to fix the grotesque damage

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84:46

Moisture: the bane of all buildings (also...

Zero Ambitions Podcast ·

2025/05/19

We are joined by Valentina Marincioni (UCL, UKCMB) and returning guest Toby Cambray (Greengauge) to talk about the bane of all buildings: moisture.Recently, they they’ve produced a simple explainer video about "breathability" in buildings for the UK Centre for Moisture in Buildings. Given Jeff's proclivity for referring to the 'sweatability' of buildings this seemed like a perfect opportunity to have Toby back and meet his colleague Valentina.We got into the subject of moisture in some

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69:16

Battery storage, lancing boilers, and decentralised...

Zero Ambitions Podcast ·

2025/05/05

Joining us for this episode are Tom Cox and Sally Sattary co-founders of Decent Energy. They have a software startup borne of a retrofit experience that did not meet its homeowner expectations, a proprietary software that works to maximise the value of battery storage to improve two key metrics: reducing cost of electricity and reducing the carbon intensity of the energy you do use.There's a bunch of chat about the potential of decentralised energy management to help people in all sorts of

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87:38

Translating retrofit for normal people, with retrofit...

Zero Ambitions Podcast ·

2025/04/23

This episode is a window into the consumer side of domestic retrofit that’s full of lessons for everyone involved in the retrofit sector. We speak with retrofit influencer Judith Leary Joyce about the experience of undergoing a deep retrofit and learning how to communicate about the subject with normal people. She talks us through her journey from building an extension during the pandemic to getting deep into retrofit and eventually becoming an unlikely retrofit influencer.Whether you work

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86:46

Embodied carbon and how sustainable is MMC? With...

Zero Ambitions Podcast ·

2025/04/07

Returning champions Richard O'Hegarty and Oliver Kinnane join us to discuss a recently co-authored paper: Understanding the embodied carbon credentials of modern methods of construction (MMC).Get ready for a long meandering discussion that gets into what they learned and what they think about accounting practices for embodied carbon, as well as plenty of chatter about MMC and why we hate the term (but not what it is).Notes from the showRichard O'Hegarty on LinkedInOliver Kinnane on

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86:46

Embodied carbon and how sustainable is MMC? With...

Zero Ambitions Podcast ·

2025/04/07

Returning champions Richard O'Hegarty and Oliver Kinnane join us to discuss a recently co-authored paper: Understanding the embodied carbon credentials of modern methods of construction (MMC).Get ready for a long meandering discussion that gets into what they learned and what they think about accounting practices for embodied carbon, as well as plenty of chatter about MMC and why we hate the term (but not what it is).Notes from the showRichard O'Hegarty on LinkedInOliver Kinnane on

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72:15

Can we meet the skills gap the way we currently...

Zero Ambitions Podcast ·

2025/03/25

For this episode we were joined by Nathan Gambling. For those that are new to him, he's heating engineer of some repute, a renowned educator, and a fellow podcaster. The episode revolves around the nature of education and learning, the skills gap—specifically focusing on heat pump and retrofit education—and a post that Nathan put up a few weeks ago about an educational experiment he tried out that led to us thinking about the purpose of education.In essence, the episode is about how people

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43:13

There is methodology for defining what ‘net zero...

Zero Ambitions Podcast ·

2025/03/11

This time around we're talking about the UK Net Zero Carbon Buildings Standard (UKNZCBS) with three of its architects: Jess Hrivnak (RIBA), Jane Anderson (ConstructionLCA), and Julie Jodefroy (CIBSE).The UKNZCBS is the first cross-industry standard for net zero carbon-aligned buildings, albeit in a pilot form. The standard has been developed to enable stakeholders to prove whether a building aligns with the UK’s carbon and energy budgets by providing a single, agreed methodology for

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82:50

A 'global' standard for residential retrofit? With...

Zero Ambitions Podcast ·

2025/02/18

Last year the Royal Institution of Chartered Surveyors (RICS) released its residential retrofit standard. Given that they're one of the construction industry's oldest, largest, and most influential institutions this felt significant.Importantly, the RICS organisation has a global footprint, so it has the potential to influence good behaviour far and wide. We're also hopeful in light of the success of the RICS Whole Life Carbon Assessment standard. That is in terms of its apparent impact,

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66:04

Can we address the decarbonisation of homes by...

Zero Ambitions Podcast ·

2025/02/04

Can we address the decarbonisation of homes by focusing on health? That's the mission that Jenny Danson has set for herself in establishing Healthy Homes Hub, and it's a question that manages to subvert Betteridge's Law of headlines, too. Healthy Homes Hub is a network, built around an online platform, that's dedicated to transforming the way people experience social housing, and its environmental impact, by creating healthier housing environments. Comprising a series of eight dedicated

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68:28

Innovating and maturing: Loco Home Retrofit is an...

Zero Ambitions Podcast ·

2025/01/21

Joining us on Zero Ambitions this week is Chris Carus co-founder of Loco Home Retrofit, a Glasgow-based 'emerging one-step shop'.Loco Home Retrofit is a retrofit operation that's most interesting for its approach to developing a viable retrofit offer, focused on building trust in communities and with its supply chain as a means to catalysing the decarbonisation of our homes (or at least Glasgow's homes). And now, they're hiring, seeking to fill three positions (below) so if you know of

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73:11

Eliminate construction waste – Loop Your Spare...

Zero Ambitions Podcast ·

2025/01/07

The first episode of January 2025 marks the long overdue, first appearance of Jay Stuart, a long-time friend and colleague of Jeff and a firm fixture of the green building scene in Ireland. Jay joined us to talk about his latest project: Loop Your Spare. It’s a SaaS platform designed to match 'spare' construction materials with projects that need them on other sites before they have a chance to be classified as waste. It’s a concept that could largely eliminate the concept of waste and

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