The fading black I have seen has been on manufactured plywood type cladding. It does not look good as looks uneven and patchy. When building we changed from the cheaper cladding to solid recycled hardwood shiplap. So glad we did, as it is now greying off beautifully.

are you planning on filling in above the left han d side of the fridge as well. The other cladding worked well because the beams were running in a different direction. Above the fridge and to the left you will have to cut in around the white beams which should still look great. Other option is just plain white with white beams a bit like the photo cheers

Delta Millworks in Texas has a really great selection. I'm quite partial to their gator texture. https://deltamillworks.com/collections/shou-sugi-ban/ Yes, it's more expensive due to the added labor costs to control burn the wood, but it's such a unique look and has numerous benefits (termites and pests don't like eating burnt wood, burnt wood is harder to catch fire again, etc), but the main benefit is the unique aesthetic. It truly is a special material. Reach out to Delta and ask for some samples!

I am undertaking a Reno in Baulkham Hills. will require structural timber and cladding (JH Scyon or equivalent) i am guessing Bunnings is not cheapest! thoughts on auctions? other options?