Compost Toilets and Natural Building

Compost toilets, such as those we sell, come with fantastic green credentials. Not only do they use no water, they use little or no electricity (depending on the model/type you choose) and can create a fabulous resource (compost) from something most people wrongly consider a waste and a problem.

It’s no surprise then, that people who undertake house construction using green and environmentally friendly/friendlier materials, often consider a compost toilet instead of a flushing toilet and the all the plumbing and pipework and septic systems that goes with it.

Eco-Loo Divert finished in optional green eggshell paint
Eco-Loo Divert finished in optional green eggshell paint.

Today, we delivered an Eco-Loo Divert to a customer in Powys, Wales. When I arrived, I asked if the house was made from hemp, and the owner was excited to tell me I was the first person to realise this without being told (I know my natural building materials!).

The building is made from a timber frame, into which a pre-mixed, slightly sloppy hemp/lime mixture is placed between shuttering. As this hardens, the shuttering is removed and re-attached further up the wall, and the next layer is put down. This creates a strong and highly insulated wall with extremely good green credentials. The waste from the wall construction was being composted- try that with brick, block or concrete!

The left-over hemp from the walls was even being composted. The ethos of building with hemp and installing/using a compost toilet fit together really well!

The recycled insulation, non-wicking underfloor layer is called Glapor which is a recycled foamed glass loose fill insulation, over which limecrete is laid (a type of concrete made from lime, mixed with recycled aggregates). The breeze blocks and concrete from the old stable was crushed in situ using a stone-crusher and the resulting rubble used on site to improve drainage and provide hardcore.

Doors and windows are ‘accoya‘ softwood that has been ‘pickled’ to prevent them shrinking and warping, yet remaining extremely durable.

The roof is a sandwich of insulating wood-fibre boards (the top layer is waterproof’ish) with sheep wool insulation in between.The outer roof and walls will be clad in local larch.

Careful attention has been paid to using as much natural light as possible, but when additional lighting is needed, low wattage LED lights have been installed.

It was an absolutely stunning building in a stunning location. The Eco-Loo Divert compost toilet will fit in a treat and only add to the buildings green credentials!

Hempcrete building in Powys

Hempcrete building in Powys


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