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Products:

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COMPUS TWIN Full Access

COMPUS Components

COMPUS Compact

Bespoke Installations

Technical Notes

PRICES!

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COMPUS TWIN Full Access

The COMPact, COMPosting, Urine Separating toilet. Click here for:  Advantages Click here for:  Planning drawings & statutory reg's The COMPUS TWIN Full Access is a wheelchair accessible toilet with a floor level only 120mm above surrounding ground level. A ramp of approximately 1.5 metres length is required to give wheelchair access which complies with Building Regulations. The toilet has two vaults being used alternately on an annual cycle ensuring thorough processing of solid wastes. The vaults, which are preformed, extend 800mm below ground level.
We can supply two types of prefabricated building. A timber framed, timber clad version with full plywood lining and a metal framed, metal clad building with ply lining. We can also design above ground masonry vaults to be constructed on site if this is more appropriate but in most cases this would make disabled access more difficult. See Bespoke Installations If you purchase a COMPUS TWIN you will get a full support package including help with statutory permissions, installation and management guidance and customer care following commissioning of the toilet. We are happy to have significant lead-up discussions without obligation.
The toilet pedestal is designed to minimise cleaning requirements. It separates urine from seated users by means of a stainless steel urine separator. We supply a conventional ceramic urinal for male use.
A view inside the wheelchair accessible cubicle showing the toilet pedestal, ventilation duct, male urinal, hand disinfectant facility and grab rail fittings. These consist of a hinged bar for the rear wall and a set of handrails. If you do not have any disabled users at the time of purchase you could save by not having the rails and bar. They could be added later if required. Due to the remote siting of many of these installations we do not supply an alarm system usually required under building regulations. We strongly recommend the hand gel disinfectant system which avoids the need for a water supply and hand-basins which carry a risk of freezing and flood damage.
The two nearest floor hatches facilitate emptying of the finished compost and the rear right hand hatch provides the alternative pedestal position. The standard ventilation system is passive. The dustbin contains soak for putting down the toilet - see Technical Notes. This could be positioned elsewhere so as not to obstruct wheelchair users, or soak can be introduced by a manager at the end of the day.

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COMPUS Components

Without a building We can offer components for the COMPUS TWIN Full Access for those wishing to design and construct their own buildings. We would supply the twin vault chamber and lid [which serves as the floor of the building], pedestal, urine separator, vent and all specialist components. The pedestal can be seen under COMPUS TWIN . If you purchase vaults and associated components from us you will get support including help with statutory permissions, installation and management guidance and customer care following commissioning of the toilet. We are happy to have lead-up discussions without obligation.

Above ground

We can assist self builders who want to construct above ground toilets. We have generic designs which we can assist in tailoring to your particular needs. We then supply appropriate components and can provide telephone support during the construction process..

Small components

We have available a range of small components including toilet fans, directional cowls, soak storage boxes etc.

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COMPUS Compact

We now have available a new compact toilet, the COMPUS Compact.

This toilet is urine separating and can have either a fan driven or passive vent depending on circumstances. Wood shavings, or similar material, are added to the toilet after "Number Twos" and these solids are emptied into an outdoor dedicated composting chamber to complete composting.

It's a good toilet for a private summer house, garden studio or other fairly low use situation.

We will shortly display photographs.

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Bespoke Installations

NatSol has designed bespoke systems for many situations. Due to current demands for standard products we are being selective about bespoke design requests but may be able to assist you. If you are thinking of designing a building and fitting composting toilets it is essential you contact us at an early stage - they are not like WCs! The examples shown here are a privately owned garden pavilion with above ground vaults and a domestic single vault toilet.

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Technical notes

"Soak" - and the composting process. Whenever the toilet is used for defecation a small amount of soak material is added to the vault. Alternatively a suitable amount can be added at the end of the day by a manager. The purpose of soak is to [i] prevent the pile from becoming anaerobic by maintaining an open structure and soaking up excess moisture, [ii] adjust the carbon-nitrogen ratio by adding more carbon [iii] cover the wastes. We will advise on a suitable soak if you install a COMPUS TWIN toilet.

Using the compost
Before coming back into use the vault which has been resting for a year is emptied leaving a small layer of compost in the bottom to supply decomposing organisms for the next cycle. The finished compost should be used or disposed of in accordance with Environment Agency and/or Local Authority guidelines. If required, further composting can be carried out in a dedicated composting facility on site before eventual use or disposal. As a general precautionary principle we advise against using finished compost on food crops, especially those where the edible part of the plant grows in contact with the ground.

Urine separation.
The toilets are urine separating. This is beneficial as it reduces the amount of soak material required and makes it possible to reduce vault size. It also avoids the need to drain the vaults and virtually eliminates any risk of ammonia smells. Urine is a very useful fertiliser since it contains an almost perfect balance of plant nutrients. We usually advise on disposal of urine to ground, subject to any statutory requirements.

Ventilation.
Passive or fan driven ventilation options are available. In the case of fully enclosed cubicles we recommend fan driven ventilation using a 1W fan and this supplies the cubicle ventilation required under building regulations. With remote toilets on, for instance, allotment sites we have never known a case where passive ventilation was not wholly adequate.

Statutory regulations
It is often necessary to have planning and building control approval from the local authority before installing composting toilets. Although the responsibility for acquiring these consents rests with you, the client, we are happy to assist in acquiring them and have considerable experience in so doing. No local authority has so far refused. Representatives from the Building Research Establishment have inspected several NatSol toilets to assist them in determining appropriate standards and regulations for composting toilet installations.

For further technical information try  Faqs.

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Prices

We don't put prices on our website. This is because most enquirers are not very familiar with composting toilet systems and may find it difficult to assess which product they require. Some of our systems are well suited to multi-user applications, such as allotment sites, and some only for low use, private applications. We prefer to discuss your requirements first and will only sell you a toilet if we consider it to be suited to your particular needs. In some cases it may be necessary to design a bespoke system.

We usually arrange carriage for our toilet systems and charge this at cost. We do not mark up carriage charges. Consequently, if the cost rises after the quotation we have no option but to pass this on.

Prices for our products are normally held for 3 months from the date of quotation.

If you are purchasing a wheelchair accessible toilet it should be possible to get a zero rating for VAT if more than 20% of your users are disabled or if you are a registered charity or registered with the Inland Revenue for charitable purposes. Under some circumstances this can be back-dated for up to 3 years after purchase.

Please call us on 0845 223 5371 to get a price estimate or use the email form on the Contact page. Thanks!