Continuing a discussion on Steven Evans Cuben/down quilt thread, Hunter and I have simultaneosly been thinking about a SUL quilt idea.
I've been to the shops and bought a painters poly dust sheet. Man these things are thin, a ragged toenail would go straight through. So I went in my gardening shed and pulled out some polthene sheet which is about six times thicker. I'll be playing with it when I get back from the Lake district on sunday.
Steven asked about air valves. Since these quilts won't be blown up hard, low tech will do for now. Fold and tape.
I'm planning on a 6 layer job using row cover (horticultural fleece) at 20g/m2 and the light dust sheet plastic sandwiched inside the heavier gauge plastic, making 3 air pocket layers and a trapped fleece layer. To avoid getting damp, there will be sealed holes through the plastic layers covered by two outer layers of fleece, which will also trap air between the 'mounds' of air filled plastic.
Target weight is 9oz, but that might rise to 11oz with a heat sheet cover with perforations in. More soon.
