Making a compost bin out of treated timber

Hello,

I'm going to make a compost bin out of treated timber so just wondering if I need to line the inside with anything or is it okay just to have the compost against the treated timber?

Thanks

 

I wouldn't worry, although you could line with old compost bags or polythene if you want to.

 

Okay thanks.

Should I divide the bin into different compartments and if so how many?

 

Why would you want to do that?
Is it really big?

 

Not sure really, might have read it somewhere.

It will be about 1500mm x 700mm

 

You could put a divider down the middle and get one side filled and rotting before you fill the other side, but it mostly depends on how much stuff you get to rot down.

There would be no point in having two sections that had material in them at same same state of decomposition.

 

Okay thanks, I'll divide into two then.

 

My compost bins are each about 1 m x 1 m, height varies. One is being filled the other finishing off. In 20 years this is the second set, the first lasted about 15 years. No lining except maybe large cardboard boxes every so often.

 

We made some bins about the same size as yours with a divider in the middle.
On either end we made a section that we could just lift off as a whole piece to get at the compost easily, though you could equally use individual slotted slats.

Having two bins allows you to readily Turn the compost from one bin to the other which makes it rot down quicker, you also need to water it regulalry as it surprising how it can dry out quickly.
No need to buy in extra worms as they soon come in on their own, though if you place it on concrete do add a few spades full of soil to act as a starter.

We also lined ours with thick black plastic using either rubble bags or a sheet of dpm from toolstation etc. A staple gun makes it easy to fix.