The roof insulation consists of a 50mm board of high density foam fitted between the rafters. This is then covered with plasterboard before being finally plastered and painted.
The boards are cut to size with an ordinary hand saw and jammed into position between the rafters. As you can imagine, none of the rafters are straight or parallel, so this is a time-consuming business. It has taken me 5.5 days to nearly complete the job. There is a section of roof still to be done, but I need to set up some tower scaffold in the stairwell to be able to reach the roof. All in all, I reckon I have cut somewhere in the region of 300-400 boards so far.
The good news is that by me doing the work, it has reduced the cost by £860. The plasterers (who would normally do this work) were very keen for me to do it. Having spent the best part of a week doing it, I can now understand why!
The roof insulation consists of 50mm high density boards that are foil coated on either side. This are cut and fitted between the rafters. They are then covered by a insulatied plasterboard before being finally plastered.
The boards are slotted between the rafters and behind the large oak purlins. Much of the purlins will remain exposed even when the plasterboard is fitted.
Each of the boards is cut to the precise width and jammed in place. Some of them need “adjusting” do to the nature of the rafters not being straight.