Wind braces or sway braces – these are the (usually) curved braces in the roof that stretch from the principal rafter to the purlin.
Primarily designed for the functional purpose of adding rigidity and preventing racking, it just so happens that they add a hugely dramatic visual flourish to the roof structure….. my favourite bit of the frame.
If you're considering an oak framed building (or larch, or douglas fir), let's talk. We'll gladly put together an outline quote (completely free, with no strings attached). And we need very little information from you to do so.
Equally, we're always here, at the end of the phone, to talk through your ideas.