Help identifying white covering thing in the picture.
I want to build a roof just like the one in the picture, but I don’t know the name of that white strip thing that is covering the rafters (The one circled in red).
Could you tell me the name of it and where can I buy it?
Also, are the end grains of the 3 beams also covered by the same material or is it just white painting?
And, how can I attach it to the beam without any nail or screw heads being visible?