The house and shop are being covered with fire-resistant Hardie Plank siding. The stuff is basically concrete in plank form, it weighs a ton and requires special sawblades to cut. But hopefully it will resist flying embers from one of our famous brush fires.
(For you, John...)
I dug down in the wood pile an came up with the last remaining scraps of "Humpert wood" to build the little hatch doors for both gable ends of the shop. They're located just above the rafters, so in addition to letting a little air flow through the building, I can use them to access any long lumber pieces I want to store on top of the rafters.