Hjaltland Housing Association was “so impressed” by the performance of Decra at its previous development, Hillock, it asked the manufacturer, Icopal, to develop a bespoke product for its latest project of 26 new build properties – Hill Grind and Burnbank in Lerwick, says building protection products manufacturer Icopal.In the autumn, the Shetland Islands battled with 200mph winds and many traditional …