Storing wood outside in the rain

It depends very much how long "an extended period" is, it also, of course, depends on how wet your climate is.

I'd not worry about it for a few weeks (especially here in East Anglia), for more than a month or two I'd consider putting it on some pallets or something.

Best to try and slip something under it to take the ground contact, but even so should be OK

Despite being treated I'll bet that it will discolour with black mould if it is left in a bundle where air cannot get to it to dry out for any length of extended time.

Not only would I raise it off the ground but also provide some air gaps within the pile.

I'd be more worried about damage to the grass than anything else.

Unless you left it for a couple of years or so it shouldn't affect properly treated timber. The top ones will protect the others.

Or untreated opepe which is practically indestructible. ~50 year lifetime. Nothing in the UK knows how to rot it! (not cheap)

The only reason I would raise wood above ground level to store is for burning so that it doesn't end up sat in a puddle of water. I'm about to do something similar for my neighbour. Mine sits on scrap palletes

If you look at companies which store and sell wood all seem to use palettes for it, and do noot store it on grass, its usually gravel areas or concrete or tarmac.

Considering the cost of wood these days, I think it pays to look after it. Brian

Brian Gaff snipped-for-privacy@gmail.com wrote

But that's for a different reason, no need to mow the grass etc.

Not when it is going to be used for a fence.