Articles
Ballymurrin House

Eco Renovation Case Study

If achieving eco buildings is challenging for new build, it is doubly so for renovation projects. While the energy and CO2 embodied in the materials may be substantially reduced by retaining as much of the original building as possible, it can prove difficult to make the resultant building energy efficient and comfortable, whilst preserving the original building’s heritage worth. Philip & Delphine Geoghegan of iCon Architecture & Uban Design describe a low impact renovation that balances these apparent tensions with great success.

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BallyMurin House

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The Old Milking Parlour
It was a few years before the restoration of the milking parlour could be entertained, even though the state of dereliction of this building was advanced and every winter saw real damage happening to the old structure. Despite being identified as of national importance by the National Inventory of Architectural Heritage, the County Council has been slow in defining the building as a Protected Structure. Any thoughts of grant assistance and tax incentives seemed optimistic, but in 2002, it was decided to bite the bullet and attempt to create a viable future for the Old Milking Parlour, which meant that, whatever else, it would have to pay its mortgage in its future use.

The building was twenty eight metres long and four metres wide, with tiny windows at the north facing front onto the courtyard and four cow-sized doors at the rear facing south; giving onto a haggard, a perfect private garden in the making. There was plenty of time to think about options for the building – its presence a daily reproach as we watched the roof gradually disintegrating.

The planning process was lengthy, but successful in the end, and we were able to approach the Wicklow Rural Partnership(WRP) for grant-aid towards restoration and use as tourism development – a self-catering cottage. We had made a submission to the partnership based on a sustainabilty brief with their active support and proposed a building which would be an exemplary conservation on the one hand, with clear energy conservation measures and a concern to ensure that all products and materials should be as far as possible chosen for their green characteristics. The making of a substantial grant by the WRP, who saw the scheme as an exemplary model for sustainable energy as well as for building conservation of buildings at risk of being lost, allowed us to restore, convert and equip the building without compromise.

Ballymurin HouseThe studio, formerly the dairy and before that a carriage house and loft with living accommodation



The space available could have generated two units of accommodation, but we realised that such a high intensity use would all-but conceal the original building form. We opted for a gentler approach, using the four stepped zones, each with its wide, low door, to keep the rhythm and identity of the original and where the stall divisions were in stone, to maintain them in place. The roof was beyond repair and we reluctantly replaced it with a substitute which was a replica of the original. We used Actis, a very thin multi-reflective insulation solution, above timber tongue & groove boarding, to ensure that the original roof line was maintained as closely as possible. The walls, 600mm thick stone, built from the ground without foundations and with a dry clay mortar, were lime-painted inside, with an original clay based plaster in some places and a relatively recent hard cement lining up to just above the height of a cow’s backside to facilitate washing down after milking. We decided not to insulate the walls internally as this would have removed the diverse evidence of earlier use and the lovely textures of unplastered stone and plain cement. This was a necessary compromise between building conservation and energy conservation issues, but the only one from which we consciously exempted ourselves.

The floor was cement, with drainage troughs through the building. Our decision was to install underfloor heating throughout the building; for architectural reasons, because the walls would be free of radiators; for technical reasons, because the walls would benefit from a gentle, but continuous heat source; for comfort reasons because of the high levels of comfort in the rooms, all of which have high ceilings under the roof; and for energy reasons, as the low temperature requirement would be ideal for a heat pump.



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