I don't know, but I am using decking boards for a sturdy fence (laid horizontally) and for the Bank Holiday weekend the budget range are 3 for the price of 2 at Wickes. They have two qualities and various lengths. The Value range are relatively light. http://www.wickes.co.uk/Products/Gardens/Decking/Timber-Deckboards/c/1000707
The grooves facing out look quite attractive. As I won't be walking on them I don't need the better range.
There is a delivery charge so it is worth buying plenty rather than having small deliveries. Doesn't matter if you collect.
The ones I put up last year have just shrunk in the dry weather and opened up noticeable gaps as they have no overlap. For a shed you can use tiler's felt behind, to keep the rain and wind out. You have to allow an expansion gap. You have to use a single screw or nail on each stud or post to avoid cracking, and preferably pre-drill. I treated mine before fixing for all-round coverage and have used coach screws with a large stainless washer under the hex head otherwise it sinks in. With a cordless drill/driver and a level it is quick work.
The grooves facing out look quite attractive. As I won't be walking on them I don't need the better range.
There is a delivery charge so it is worth buying plenty rather than having small deliveries. Doesn't matter if you collect.
The ones I put up last year have just shrunk in the dry weather and opened up noticeable gaps as they have no overlap. For a shed you can use tiler's felt behind, to keep the rain and wind out. You have to allow an expansion gap. You have to use a single screw or nail on each stud or post to avoid cracking, and preferably pre-drill. I treated mine before fixing for all-round coverage and have used coach screws with a large stainless washer under the hex head otherwise it sinks in. With a cordless drill/driver and a level it is quick work.