J&R
Mama Doe
Hi all, I had a response from them, the guy basically said he doesn't know why it might have gone mildew like this and has used the same batch for lots of other runs with no problems.
Apparently the timber is dipped in preservative.
He has offered to send me some more preservative so that I can apply another coat, which I guess is better than nothing.
I'm going to work out a way to securely reattach the small run so that Doris and Pepper can still have a bit of space, and i can scrub the new one and let it dry indoors for a couple of days before I paint it. Hopefully the preservative will arrive in time for my couple of days off, otherwise I'll have to go ahead and use what I have in the shed.
I wouldn't be happy with a 'none of the others have had a problem' response. It's not been sold as advertised, I'd be telling them to take it back and replace it.