From the Construct Ireland archives

A typical Irish bungalow built in the early 1990s has been transformed with a green-tinted extension built in the spirit of modernism. Jason Walsh visited Enniskerry, County Wicklow to see how the old and the new were integrated

Randy Ralston and Mel Cronin aimed for the passive house standard with their upgrade, and though they didn’t quite get there they ended up with a house that produces more energy than it consumes, making it one of the country’s flagship green renovation projects.

Germany has a reputation for high quality craftsmanship, an attention to detail and a positive attitude to sustainable and healthy housing. Jason Walsh visited a new German-built house in County Dublin to see if the expertise can be exported.

In the last decade timber has come to be seen one of the leading sustainable building materials, primarily through the growth of the timber frame market. Jason Walsh visited County Wexford to look at a growing use for the material – solid timber construction

Of huge importance to our national identity and one of the major features of the rural Irish countryside are the derelict small cottages, scattered across the land, that have long fallen into ruin. Often situated in Irelands most beautiful and remote areas, Terry Cunningham, Rural Enterprise Adviser of the Southern Tipperary office of Teagasc sought to revitalise and fully utilise these charming and unique dwellings from our past.

While the principles of low energy building apply equally for new build and upgrades, the reality is that htting passive levels becomes much trickier when retrofitting. The Passive House Institute have taken this on board and created a retrofit standard that is ambitious but achievable.

Public private partnership schemes have come to dominate many aspects of Irish infrastructural development, from toll roads to urban regeneration schemes. Jason Walsh asks if they amount to privatisation by stealth and whether they come at too high a social and environmental cost.

Foxrock passive development built with externally insulated poroton & aircrete blocks along with timber frame

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.

Watford, just over 30 kilometres north of London, is now home to an aspirational new house, developed by an Irish company, designed to completely remove carbon emissions from the home. Jason Walsh visited the site to learn more