Does the energy rating of homes actually reflect their real-world performance? Dr Shane Colclough, vice chair of the Passive House Association of Ireland, outlines the growing importance of post-occupancy analysis.
Teething problems with the software used to generate Building Energy Ratings and determine compliance with Part L of the building regulations may be rendering it unfit for purpose, Passive House Plus can reveal.
Antrim-based company Showersave say that the imminent inclusion of wastewater heat recovery in the new DEAP 4.2.0 software, set to be launched on 16 September, will provide developers, designers and builders with a simple and cost-effective new way to help ensure Part L compliance and achieve better building energy ratings.
Architect Tom Duffy has long had an interest in green design, and working on a self-build project for himself and his wife he was able to prove a point: making a modest family home to the highest standards need not cost the earth.
This striking new-build passive house combines a traditional farmhouse form with ultra-low energy performance and a spectacular location – using two different forms of masonry construction
This 1960s Galway home was turned into a passive house - and is costing just €55 per year to heat.
With this passive house in Co Kildare, father-and-son building team Pat and Paul Doran of Pat Doran Construction Ltd prove that meeting the strict low energy standard can be done for even less than a ‘normal’ build – to the tune of a €20,000 reduction in build costs compared to the Department of the Environment’s suggested compliance approach.
A passive retrofit in Co Meath offers a template that could be applied across much of the Irish housing stock: a long, dark, 1970s bungalow was transformed into a bright modern home that’s now warm and comfortable.
The Department of the Environment has written to Dublin’s local authorities warning against adopting higher quality housing standards – and threatened to overrule Dún Laoghaire-Rathdown’s proposal to mandate the passive house standard – in correspondence obtained by Passive House Plus magazine.
Specifications for new homes which fall short of energy performance targets in the Dwelling Energy Assessment Procedure software may nonetheless comply with Part L of the Irish Building Regulations, the Sustainable Energy Authority of Ireland has said. This is potentially a significant development for passive house, a proven ultra low energy building strategy which is often undermined by the relatively crude assumptions in the Irish regulatory guidance and Deap software.
Built in 2004, Tomás O’Leary's house in Wicklow was the first in the country to be certified by the Passive House Institute — but how would it fare when subjected to a BER assessment six years later?
Thermal mass can significantly influence a building’s space heating requirement – in some cases the effect is to increase it, and in others to reduce it. Leading energy consultant Ciaran King of Emerald Energy explains how this occurs, and by describing an assessment of the topic, provides some rules of thumb regarding when thermal mass may be beneficial, and when it may be detrimental.
Earlier this year constructireland.ie broke the news of the introduction of the pilot Home Energy Saving Scheme, a new grant funding programme designed to stimulate the en masse refurbishment of Ireland’s poorly performing existing housing stock. John Hearne travelled to one of the pilot areas to see how the scheme is working on the ground, and discover how the scheme is developing.
Passive houses have long been considered the ultimate in low energy buildings. So when it comes to BERs, why don’t they always get a straight A? Lenny Antonelli investigates.
Lenny Antonelli visits a new residential development in rural Carlow that boasts only the second and third certified passive houses in Ireland, and encouragingly, finds that meeting and exceeding the coveted passive standard wasn’t as difficult as expected.
Whilst great strides are being made in upgrading energy performance requirements under Part L of the Building Regulations, the issue of ventilation has remained largely ignored by legislators for years, leaving designers with antiquated standards to work to. At its worst, efforts to air-tighten and increase the insulation of homes is being undermined by the absurd practice of knocking holes in walls. John Hearne looks into what changes need to be made to modernise Part F.
Patrick Daly, co-founder of the RiSE (Research in Sustainable Environments) research unit in the DIT has undertaken an in depth study and critique of the current Irish Part L for energy efficiency in dwellings, comparing it in detail to the UK equivalent. The findings raise challenging questions about the Irish standards and methodology and highlight serious shortcomings in comparison to our UK neighbours, permitting substantially higher levels of CO2 emissions from new homes in Ireland than in the UK.
At the start of July a key event in the Irish construction industry passed almost entirely unnoticed, with the requirement that the brand new Dwelling Energy Assessment Procedure (DEAP) calculation software be used for all planning applications for new homes with immediate effect. The new tool will be used to calculate Building Energy Ratings (BER) under the requirements of the Energy Performance of Buildings Directive (EPBD). Patrick Daly, lecturer in Environmental Design in the School of Architecture at DIT Bolton St. reveals his view on DEAP and its impact on the industry.
As policy makers start to set mandatory low energy and renewable energy requirements as conditions of planning, the ability of the construction industry to find sound low-cost ways of achieving the new standards is becoming a key factor. John Corless speaks to leading sustainable building consultant Jay Stuart of Delap & Waller EcoCo and Paul Gilmartin of Ecobead to discover an approach with enormous potential for en-masse usage.
