A few simple compost bays.

Just a quick post showing a few compost bays we built this week and a bit of a simple guide of how we constructed them. We are now starting to build quite a few more of these lately. They are very simple to construct, and relatively cheap considering the size of they bays that are a possibility. These 3 bays are 2m x 2m per bay, although 1.2m x 1.2m is usually a better option, as the timber we use is commonly 3.6m, and this then gives no wastage.

First thing to do is to decide on the location, size, and how many you want to build. We usually build 3 as it seams to be the most practical. The aim is to chose a size so that once the 3rd bay is full, the 1st bay has rotted down enough to use on your beds. So it’s all down to the client or gardener to make the decision on size, as they will have a better idea of the quantity’s generated. The construction starts with the 4 fence posts to dig into the corners. We usually dig a hole 18” (450mm) deep, and concrete the post into position. Making sure that they are the correct distance apart, in this case 2m, and all square to each other. We usually use postcrete to fix them into the ground, as it sets in less than 10 minutes, and then we can carry on the rest of the build straight away. You can uses standard concrete if you wish, but you will need to wait overnight for them to dry. Next step is to fix the boards on the side. We used 6” x 1” timbers as these are commonly used as fencing gravel boards, which are plentiful, and relatively cheap. When fixing the boards on, always screw them on rather than nail them. This is because nails can push out if you fill one of the bays up, and it applies pressure to side panels. It is also important to leave a 1” (25mm) gap between the boards, as this allows the compost to breath, and rot more efficiently, and evenly. Once the back and side boards are on, we fix 2 buttons to the front posts so we can slide the front boards In and out, rather than fix them permanently. This allows access for a wheel barrow into the bays, and then you can build the front panels up, as the bays fill up.

All in all, it’s a simple and effective way to build compost bays. 2 people built these in just over a day, and they will last for a couple of decades or more of maintained well.

Thank you for your interest, and if you have any questions, feel free to ask.