Mostly just draw thin wide timbers. You can trace the components you have to create faces and then use Push/Pull to give them thickness. Make sure to create groups or components as you go.
I had to think for a while, I did not know the phrase ‘skinning a timberframe’
‘Pellen’ means skinning in Dutch😀
Just old school siding or SIPs panels? @DaveR 's method is the simplest, lowest polygon way to model it, but if you’re expecting to enumerate every board or panel like you could with the timber frame, that would take more work with groups or unique components for each one.