UK blogs - passivehouseplus.ie

Condensation within the structure of buildings is a lot more complex than condensation in a sweaty pub on a Friday night, writes building physics expert Toby Cambray.

As governments rush to jump-start their economies, there is a danger that important lessons for how to retrofit homes will be lost in the rush to build. But there is a better way, writes Dr Peter Rickaby.

Returning to his regular series on the evolution of sustainable building during the 20th century, Dr Marc Ó Riain takes look at the first serious attempt to build a house with net zero energy use.

How do ventilation filters work, and can they help to protect us against Covid-19? Toby Cambray weighs in on the physics of a subject that is more complex and interesting than you might expect.

Taking a temporary detour from his series of columns on the history of sustainable building and renewable energy, Dr Marc Ó Riain takes a look at Covid-19 from the perspective of Gaia theory, and at the relationship between collapsing ecosystems and the emergence of new infectious diseases.

The UK government has committed to a legally binding target of being “net zero carbon” by 2050. Peter Rickaby ponders the steps needed to get there, and what the goal means for our homes, offices and other buildings.

While the green wave visible at ballot boxes and street marches in 2019 reflects an apparent escalation in public consciousness on the need for urgent, decisive environmental action, the roots of today’s environmental consciousness stretch back over half a century, explains Dr Marc Ó Riain.

We are in the grip of a global emergency. The science is clear, and thousands of lives have already been lost. The public are demanding firm and bold leadership, but a laissez-faire attitude on the part of western governments has delayed and watered down our response, with calamitous consequences.

What forms does sexism take in the construction industry, asks builder Em Appleton, and what can we do about it?

What are the consequences for the built environment, and the climate, of the lack of communication between research and industry, asks Dr Peter Rickaby – and what can be done about it?

In the latest instalment of his series on the development of energy efficiency and renewable energy in the 20th century, Dr Marc Ó Riain reports on the seismic impact caused by the 1973 oil crisis.

Despite the urgency with which radical action is required to transform our built environment, Dr Peter Rickaby says he has never been more optimistic about the possibility of change.

In his latest column on the evolution of solar energy, Dr Marc Ó Riain looks at how the design approaches of architects and engineers diverged in the middle of the century.

Moisture problems are the Achilles heel of many new builds and retrofits, explains Dr Peter Rickaby – problems that can be exacerbated with poorly-conceived energy efficiency efforts, and which may become more prevalent due to climate breakdown.

Richard Tibenham of Greenlite Energy Assessors says a case of two highly energy-inefficient and ‘hard-to-treat’ buildings, built in 2013, should serve as a warning to the whole construction sector.

More than one million homes have been built around the UK to security standards required by Secured by Design (SBD), the UK’s national police crime prevention initiative, with significant reductions in crime and with considerable benefits to the environment. SBD senior development officer, Kenny McHugh, explains what SBD could offer to Ireland.

It’s no coincidence that Nordic countries are some of the most advanced in the world when it comes to low energy design. In this article, three assistant professors of architecture based in Denmark and Finland discuss areas where we can learn from our Nordic neighbours — and where we might return the favour.

Our editor Jeff Colley's editor's letter from issue 30 received some particularly lovely praise, with architect Steve Mardall reaching out to say: "Was moved to write to commend you on your editor’s letter in this issue 30. You’ve perfectly captured the essence of the totality of where we are as a planet and a race. And captured well that subtle consensus of denial and ‘othering’ it, that is a compelling force to fall in line with if one is not to be labelled as a righteous crank. Your words articulate some of my own not formally articulated thoughts, and offer me clarity and impetus going forward." Meanwhile, AECB Carbon Lite Retrofit graduate Paul Forrester tweeted: "What a tremendously powerful piece of writing your editor’s letter is in issue 30 of @phplusmag. When I struggle to articulate all the thoughts, fears and conflicting ideas in my head, I might just show people that instead!" So here it is.

A new free-to-use online tool aims to map the energy performance of Europe’s buildings, with the goal of helping to stimulate large-scale deep retrofit, writes project manager Michael Hanratty.

Renewable energy technologies are often regarded as new and innovative, but in some instances their roots predate the oil age and go back to the start of the industrial revolution. Dr Marc Ó’Riain finds important insights in past failures of early solar thermal systems.

Is the very nature of the way that construction products are bought and sold limiting the wider proliferation of natural and sustainable materials?

During a speech last year Theresa May challenged the construction industry to halve the energy use of new buildings, and to halve the cost of retrofit. But we already know how to meet these challenges, writes Peter Rickaby, and much more difficult tasks lie ahead.

In his latest column on the history of low energy building in the 20th century, Dr Marc Ó Riain charts the surprisingly fascinating history of double glazing.

Today is the last day of ISH, the bi-annual exhibition for the combined topic of water and energy, which is on at the exhibition grounds in Frankfurt. Titled as ISH, it is the world’s leading trade fair for a range of associated topics, materials and services.

New studies are seeking to answer questions about how spray foam insulation, and materials containing formaldehyde, affect indoor air quality —and some of the early results are worrying.

Tim Martel of Optimal Retrofit describes recent advances in PHribbon, an Excel tool designed to improve the functionality of the passive house design software PHPP.

Dr Marc Ó Riain looks at the influence of 20th century architectural giant Frank Lloyd Wright on low energy building design.

The imperative to engage in evidence-based deep retrofit grows by the day. With the UK government dragging its heels, Peter Rickaby finds signs of hope in local initiatives, and in burgeoning Irish efforts.

In his third column on visionary eco-buildings of the 20th century, Dr Marc Ó Riain looks at the pioneering passive solar designs of Fred Keck.

The net effect of poor insulation levels, underheating and under-ventilation in buildings poses a major public health threat. Peter Rickaby describes one pioneering London project that’s taking a practical, methodical – and scalable – approach to solving the problem.