27 Sept 2012: [Extension] The Holscot replacement ETFE frames for the Surya Sunbox have arrived, and are still in their packaging. It's best not to open them until I am ready to make an outer frame as there is a risk of damage if they are unpacked too early.
charred Cedar which is very durable and said to be maintenance free, and it is easily fastened with self tapping screws. However, it is difficult to find a supplier - most of the Grand Designs examples have people doing it themselves with a blowlamp or wood fire. On the campus, my department has been building a house clad with charred cedar, and all the sidings are vertical, leaving an abundance of offcuts, because they try to avoid a joint in the wood. So I am going to try to save a roofrack load from being put in a skip, and see if they will fit our extension. Only 14.4 sqm are needed, and my longest length would be 1.45m if I run them horizontally.