how to treat wood on older shed

Real creosote.

Bought from where? I thought it was unavailable.

Is it constructed with featheredge or shiplap boards? If it's the latter, then Sadolin is very good (expensive though). I am just about to recoat my shiplap garden shed seven years after the last coat of Sadolin without having to repair it (with the exception of the roof which needs refelting after 11 years [green mineralised felt used]).

If it's featheredge sawn, then I've had good results with Ronseal on the garden fences over the years.

Cash Cash

Only to consumers: trade outlets to the agricultural trade will carry it. In serious volume.

Its shiplap, a couple of boards will need replacing but other than that the shiplap is good.

I still do DIY with my Dad who's 75. He can still manage just about everything that he used to. In fact I call him round and send him under the floor to thread cables, as he can move around under there better than me (my shoulders are too wide to allow me to turn over under my floor). There's hope for us all!

Personally, I'm looking at re-roofing our shed (it currently has a temporary plastic patch where a section of felt tore in a high wind) and I'm considering EPDM - looks to be a simple and effective system.

SteveW

Plus used engine oil?

EDPM. Anyone else got thoughts on this.