Mainly CLS, OSB and wrinkly tin/plastic.
Where is open and where's a good price?
Wickes is my default usually...
Wickes isn't actually that bad usually, but you're usually much better off at a builders merchants. Open an account.
It'll be cheaper and arguably better quality so I've found.
Make sure that when you ask for say 2 by 4, you say '2 be 4' else they'll be mean to you. Also be prepared to have absolutely no idea how much anything costs until you come to pay for it 😐
Some probably won't have corrugated roofing in stock. There's quite a few options for it online or I've found it at reclamation yards before, sometimes used and sometimes new.
Local sawmill or builders merchant.
Most builders merchants are only open to trade customers at the moment though.
That is the issue it seems perchy.
I've a local sawmill but it's all landscape and gardening timbers...
I've bought building materials from Buildbase (Whitburn) think there is one in Falkirk.
Also Orchard Timber in Livingston.
Both phone up, place your order and go pick it up at the designated time.
Be warned though you might not be able to get a slot the following day!
Stewart timber in cumbernauld sell all shed build your own stuff, and are good.
Try Thornbridge in Stirling for OSB and CLS - they might be operating on a call a collect basis
or try MKM as a more general merchant that might also have the roofing- they’ve also got a branch in Stirling and..... now hold onto your chair because this is crazy talk... they have a website with prices on it.
ive got 4 sheets of onduline getting in the way at the moment if you want it.
Stewart timber in cumbernauld sell all shed build your own stuff, and are good.
I have a pile of posts and joists on my drive from them at the moment. They have a notice on their website that orders are taking 10 days but ours came in 2 🙂