RonP and others, HI!
Hi, I realise that the deep litter needs to be a mix and it will always be a compost heap, albeit a cold one. Thanks to absolutely everyone who has read and/or commented. I'm starting to feel less alone and less that I will upset my lovely hens...
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So! Affter all your advice - and some help I've received locally, however good or random - this is where I'm at.
In a final request on this topic I'd really appreciate it if anyone reading could comment. Even if you don't think you have much to say! Who knows what piece of info you might hold, the final jigsaw piece!
So in summary... If you have time to comment... Please do, any view would be so much appreciated. Thanks.
Here's what I've managed to secure so far, for my run which is 8m2. Also note my run is against a fence and has a sloped roof, so shouldn't be particularly damp.
* 2 x 90 litre bags of bark - I know bark can get damp and mould so isn't recommended for chicken runs, but I'm thinking it will be spread quite widely and so better than nothing... I've had bags of the same stuff on my tiny garden, which broke down over time, so I don't foresee a problem as long as it's mixed in with loads of other, dry stuff. (Famous last words...)
* Wood ash - I appealed locally and was offered several bin bags full! Initially it was wanted just to mix with sand in my dust bath, but hey! Now I'll have plenty spare to provide a basic layer in my run. And I figur
* Straw - I wasn't majorly keen on straw but a kind man gave me two large bags of chopped barley straw, dust removed, ready for small animals, so that's fantastic and I'm very grateful to have it to sop up any damp in the run. I'll use that before I decide whether to use regular straw again (I'm thinking I'm more likely to use the softer bedding from the nest boxes).
* Woodchips - these are the mainstay of my run. In an ideal world, I'd place 2 inches of woodchips thru the whole 8m2. But woodchips cost money (as they have a saleable value) so... I've been able to source some quite affordably as a one-off, and will collect asap. While I'm sure I could always have more (even if I filled my entire car) I'm extremely grateful and will be making a donation to the supplier. Once I see how many woodchips I've collected, I'll know how hard it will be to populate the rest of the run with natural litter.
I'm in east London. I'll likely reproduce this post in my own blog, so it reaches people near me who can help!
But aside from wanting more help, more donations to line my run (and thank you So MUCH if you can help, no matter how little or large) I will be hoping others see this and get an idea of what's involved.
And my East London neighbours and friends, yes, there will be eggs in due course...!
Thanks again to all Backyard Chicken Folk for your help in this thread. I'm still not out of the woods and would always appreciate your kind comments and advice on getting deep litter up and running! Loads of Clucks to you all!