When I visited a collective of Tiny House builders earlier this year, they recommended that I sheathe my structure with wood fibre boards. Though they are made from pressed wood fibre, they have a different texture than OSB or MDF. They are lighter, 'fluffier' perhaps. And according to the manufacturer's website they are entirely compostable- no chemical glue. They provide extra insulation, regulate humidity, and are wind and rain-tight. They have a tongue-and-groove structure that interlocks the panels- although my surfaces are so small that I couldn't really take advantage of that! One big question which I hadn't resolved in the design was how to make these panels go around the curved part of the structure. I ended up making saw cuts to half the depth of the panel and then bending them. It worked, although I think that compromised the wind-and-rain tightness... To fill in the gaps, I mixed the leftover fibre with water and glue and used that as a