In the meantime, we decided to fix the window which was broken by the weight of the overladen roof pressing down on it. See the post at http://carvingswithstories.blogspot.co.uk/2013/01/fixing-boiling-wells-roundhouse-roof.html for the full story...
Anna and I, together with the young people that are volunteering through their schools to help on the project, assembled a new window in the Boiling Wells barn last Tuesday.
Today, Simon and I fitted the window into the roundhouse wall. It was a bigger job than it sounds!
The previous window was a glazing unit slid into slots cut in the surrounding cordwood logs. There was a lintel made of three sweet chestnut sticks, the central one of which was also grooved to take the top of the glazing. The adjacent, surviving window was put together in a similar way, which you can see below.