Secret Scotland

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Hill House survey confirms extent of water/weather damage

As the construction of a protective cage around Mackintosh’s Hill House in Helensburgh (built for publisher Blackie and his family in 1904) continues, a new survey using advanced techniques (combining previous survey data obtained in 2003 with new 3D digital survey and microwave moisture readings) has revealed the extent of the water damage. This has resulted from a century of Scottish weather (which we know is wet), and lack of knowledge of how the materials used aged over that time period. Then, the materials were largely experimental.

The method of infra-red thermographic (IRT) imaging records differences in surface temperature, which give an indication of where moisture from decades of wet weather is retained within the building fabric. The technique highlights differences in surface temperature, which shows where moisture from decades of wet weather has accumulated within the building. Combining the three surveys allow building conservators to pinpoint areas of damp, and gain a better understanding of the declining condition of the property.

Carried out in partnership between the National Trust for Scotland, which owns and cares for Hill House in Helensburgh, and Historic Environment Scotland, it shows the extent of the damp and water damage to the building in increasing detail.

“Due to the design of the Hill House, there are many ledges, wall heads and chimneys that have had a history of many attempts to remedy, yet this problem continues.

“We’re also now have additional areas of concern. We have also been able to see the direction that the water is travelling in some of the rooms, in particular in the exhibition room, where there was already clear damage.

“The works to create the ‘box’ are now well under way and we are grateful to the many individuals who have generously donated to help us to tackle these problems. The intention is that the structure will provide a temporary respite for the Hill House pending a long-term solution to the water ingress being found.”

The house and gardens are currently closed to the public but are expected to reopen in late spring.

Mackintosh Hill House damage revealed by new survey

The data shows the direction that the water is travelling in some of the rooms, in particular in the exhibition room, where there was already clear damage.

New survey reveals extent of damage to Mackintosh house

Imaging: Areas of concern Credit: National Trust for Scotland

Imaging: Areas of concern Credit: National Trust for Scotland

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19/03/2019 - Posted by | Appeal, Civilian | , , ,

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