Glass Canada

Window repairers are a glass apart

December 15, 2008  By Sally Williams

glassDec. 15, 2008 – Repairing a broken window is usually not too taxing an affair.  But it took a crane and four men four days to replace a broken pane in the world’s largest single-span glasshouse.

When a crack first appeared in one of the 785 windows of the Great
Glasshouse of the National Botanic Gardens in Carmarthenshire almost
three years ago, the garden’s publicist David Hardy knew that replacing
it would be a “tricky operation”.

He said: “The pane measures roughly 4m x 1.5m (13ft 6in x 5ft) and weighs about half a tonne.

“The contractors, from Metallbau Fruhand, Germany, were probably working 40ft up for much of the operation.


“About 100 of the 785 windows in the roof open to regulate the humidity but two or three have been permanently stuck open.



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