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GL 90
Batch composting toilet
$1,190.00 – $1,590.00
Discover waterless sanitation with the GL series. Our innovative GL 90 model offers a sophisticated, split-system design that separates the composting unit from the toilet. This design not only simplifies the service of the toilet but also significantly enhances both user experience and compost quality.
Each GL unit features a stylish porcelain pedestal that adds elegance to any bathroom space. The GL 90 is perfect for families of 1-4 people. It is ideal for regular use in holiday homes, cabins and tiny houses with limited space below bathroom floor level. The GL 90 package comes with two GL 90 composting containers that the service of the system a breeze.
Year-End Deal: Save Up to $200 on Shipping – Discount Applied at Checkout!*
18" Below clearance required
2 x Batch composting bins
GL 90
The GL 90 is a composting toilet that does not require water or electricity to function. Unlike traditional flush toilets, the GL 90 doesn't require flushing. All waste simply falls into and composts within a sub-floor GL 90 composting unit.
This split-system toilet features a stylish porcelain pedestal in the bathroom. It connects to a composting container located below floor level. When full, you simply swap the container with a spare one. This design is perfect for houses with limited space beneath the toilet.
All maintenance is done outdoors, keeping your indoor spaces clean. Using batch composting, servicing the GL 90 is straightforward and clean. When a container fills up, you seal it and leave it to compost. Then, replace it with a fresh one. Once the other container is also full, the compost from the first container is ready humus-like compost that can be reused in gardens or safely disposed of.
You can expand the system's capacity by adding more containers as needed.
Use of the GL 90
The GL 90 composting toilet operates like a conventional toilet but without the need for flushing. All waste and toilet paper falls directly into the composting container below.
Inside the container, darkness conceals the waste, ensuring no visibility. Additionally, the built-in ventilation system in the composting container eliminates any odors, maintaining a fresh environment above.
After each use, it’s advisable to sprinkle a cupful of covering material, like hemp, over the waste through the toilet seat. You can also opt to add a larger quantity of covering material less often, such as weekly. To enhance the composting process, occasionally stir and level the compost to facilitate a more efficient breakdown.
Please remember not to dispose of plastic items, like sanitary towels, in the composting container. These should be thrown into a separate bin as they are non-compostable.
Installation of the GL 90
There are two main ways to install and service the GL 90 composting toilet. In general the GL 90 composting container has to be installed directly below the toilet pedestal. Depending on clearance height below the floor-level, the toilet can be installed and serviced either in such a way that the container is pulled out all together with the lid and the waste shaft (Option 1), or by leaving the waste shaft and the lid in place (Option 2). The option number 2 is generally more common.
For more information, please refer to the Installation and user manual GL 90
Installation option 1
Installation option 2
Service of the GL 90
When the GL 90 composting container is finally full of solid waste, the full container is pulled out below the bathroom. The full container is then sealed with a closed lid and left outside to undergo further composting process.
The empty(ied) spare container is then put into use, replacing the full container. The use of the toilet can continue right away.
The service can be done in matter of minutes without the need for tools.
Leveling the compost inside with the GL Compost Maximizer
There are two models of the GL 90 composting toilet available. You have the option to choose the GL 90 with or without ‘compost maximizer’.
Generally with all composting toilets, solid waste tends to pile up forming a cone shape. To use the full volume of the composting toilet, the pile should be manually rolled over. For this purpose, we offer the option of GL 90 with compost maximizer. The compost maximizer is essentially a metal leveler that is manually operated by pushing and pulling it outside the GL 90 container.
The compost maximizer is an optional feature. The pile may also be leveled using virtually any stick, shovel or fork, though this may require you to pull the GL 90 container out first. Therefore, the compost maximizer is a handy feature for leveling the compost inside the GL 90 composting container.
Frequently Asked Questions of GL 90 composting toilet
Can I throw toilet paper into the composting container of the GL 90?
Yes, you can safely dispose of toilet paper in the GL 90.
How often do I need to empty the composting container of the GL 90, and how quickly does it fill up?
The frequency at which the composting container fills up varies based on the number of users and other factors such as climate. Generally, the GL 90 supports 2 to 3 people full-time or 4 to 5 people part-time comfortably.
If the usage is higher, it may be advisable to consider obtaining an additional spare container or opting for a system with larger capacity.
How much space is required below the floor for installation of the GL 90?
The GL 90 requires a minimum clearance of 13 inches below the toilet to accommodate the composting container. The GL 90 is one of the most low-profile split-system composting toilets in the market.
If you do not have the space below, please consider our self-contained waterless toilets.
Not seeing your question?
Let us hear it! There are others probably as well pondering the same.
📱(702) 328 0689
✉ info@waterlesstoiletshop.com
Dimensions and Specifications of GL 90 composting toilet
| Feature | GL 90 Specifications |
|---|---|
| Width | 24 inches |
| Depth | 24 inches |
| Height | 18 inches |
| Chute Extension | Up to 22 inches extra |
| Capacity | 2 – 3 people full time |
| Average Daily Visits | 10 visits |
| Annual Visits (Approximately) | 3,650 visits |
| Volume per Container | 90 liters (Approximately 24 gallons) |
| Total Volume | 180 liters (Approximately 48 gallons) |
| Country of Origin | Made in Australia by Green Loo |
Delivery Contents
- White porcelain pedestal, non-separating, incl. soft-close seat and fixtures
- GL 90 composting container with a waste chute (21.6″)
- GL 90 Spare composting container with a closed lid
- Electrical duct fan
- Ventilation pipe fittings*
- Excess liquids drainage hose & fittings*
- Liquid enzyme cleaner
- Hemp dry material bale
- Instructions for installation and use
*To ensure a seamless installation, you will need to source ventilation pipes from your local hardware store. We have chosen not to include these pipes in our package to avoid the additional shipping costs associated with transporting long, rigid items, allowing us to keep our product prices competitive for you. Additionally, you might find it necessary to have a standard canister or container on hand for any excess liquids. We appreciate your understanding and are here to assist you should you have any questions about acquiring the right materials.
GL 90
The GL 90 is a composting toilet that does not require water or electricity to function. Unlike traditional flush toilets, the GL 90 doesn't require flushing. All waste simply falls into and composts within a sub-floor GL 90 composting unit.
This split-system toilet features a stylish porcelain pedestal in the bathroom. It connects to a composting container located below floor level. When full, you simply swap the container with a spare one. This design is perfect for houses with limited space beneath the toilet.
All maintenance is done outdoors, keeping your indoor spaces clean. Using batch composting, servicing the GL 90 is straightforward and clean. When a container fills up, you seal it and leave it to compost. Then, replace it with a fresh one. Once the other container is also full, the compost from the first container is ready humus-like compost that can be reused in gardens or safely disposed of.
You can expand the system's capacity by adding more containers as needed.
Use of the GL 90
The GL 90 composting toilet operates like a conventional toilet but without the need for flushing. All waste and toilet paper falls directly into the composting container below.
Inside the container, darkness conceals the waste, ensuring no visibility. Additionally, the built-in ventilation system in the composting container eliminates any odors, maintaining a fresh environment above.
After each use, it’s advisable to sprinkle a cupful of covering material, like hemp, over the waste through the toilet seat. You can also opt to add a larger quantity of covering material less often, such as weekly. To enhance the composting process, occasionally stir and level the compost to facilitate a more efficient breakdown.
Please remember not to dispose of plastic items, like sanitary towels, in the composting container. These should be thrown into a separate bin as they are non-compostable.
Installation of the GL 90
There are two main ways to install and service the GL 90 composting toilet. In general the GL 90 composting container has to be installed directly below the toilet pedestal. Depending on clearance height below the floor-level, the toilet can be installed and serviced either in such a way that the container is pulled out all together with the lid and the waste shaft (Option 1), or by leaving the waste shaft and the lid in place (Option 2). The option number 2 is generally more common.
For more information, please refer to the Installation and user manual GL 90
Installation option 1
Installation option 2
Service of the GL 90
When the GL 90 composting container is finally full of solid waste, the full container is pulled out below the bathroom. The full container is then sealed with a closed lid and left outside to undergo further composting process.
The empty(ied) spare container is then put into use, replacing the full container. The use of the toilet can continue right away.
The service can be done in matter of minutes without the need for tools.
Leveling the compost inside with the GL Compost Maximizer
There are two models of the GL 90 composting toilet available. You have the option to choose the GL 90 with or without ‘compost maximizer’.
Generally with all composting toilets, solid waste tends to pile up forming a cone shape. To use the full volume of the composting toilet, the pile should be manually rolled over. For this purpose, we offer the option of GL 90 with compost maximizer. The compost maximizer is essentially a metal leveler that is manually operated by pushing and pulling it outside the GL 90 container.
The compost maximizer is an optional feature. The pile may also be leveled using virtually any stick, shovel or fork, though this may require you to pull the GL 90 container out first. Therefore, the compost maximizer is a handy feature for leveling the compost inside the GL 90 composting container.
Frequently Asked Questions of GL 90 composting toilet
Can I throw toilet paper into the composting container of the GL 90?
Yes, you can safely dispose of toilet paper in the GL 90.
How often do I need to empty the composting container of the GL 90, and how quickly does it fill up?
The frequency at which the composting container fills up varies based on the number of users and other factors such as climate. Generally, the GL 90 supports 2 to 3 people full-time or 4 to 5 people part-time comfortably.
If the usage is higher, it may be advisable to consider obtaining an additional spare container or opting for a system with larger capacity.
How much space is required below the floor for installation of the GL 90?
The GL 90 requires a minimum clearance of 13 inches below the toilet to accommodate the composting container. The GL 90 is one of the most low-profile split-system composting toilets in the market.
If you do not have the space below, please consider our self-contained waterless toilets.
Not seeing your question?
Let us hear it! There are others probably as well pondering the same.
📱(702) 328 0689
✉ info@waterlesstoiletshop.com
Dimensions and Specifications of GL 90 composting toilet
| Feature | GL 90 Specifications |
|---|---|
| Width | 24 inches |
| Depth | 24 inches |
| Height | 18 inches |
| Chute Extension | Up to 22 inches extra |
| Capacity | 2 – 3 people full time |
| Average Daily Visits | 10 visits |
| Annual Visits (Approximately) | 3,650 visits |
| Volume per Container | 90 liters (Approximately 24 gallons) |
| Total Volume | 180 liters (Approximately 48 gallons) |
| Country of Origin | Made in Australia by Green Loo |
Delivery Contents
- White porcelain pedestal, non-separating, incl. soft-close seat and fixtures
- GL 90 composting container with a waste chute (21.6″)
- GL 90 Spare composting container with a closed lid
- Electrical duct fan
- Ventilation pipe fittings*
- Excess liquids drainage hose & fittings*
- Liquid enzyme cleaner
- Hemp dry material bale
- Instructions for installation and use
*To ensure a seamless installation, you will need to source ventilation pipes from your local hardware store. We have chosen not to include these pipes in our package to avoid the additional shipping costs associated with transporting long, rigid items, allowing us to keep our product prices competitive for you. Additionally, you might find it necessary to have a standard canister or container on hand for any excess liquids. We appreciate your understanding and are here to assist you should you have any questions about acquiring the right materials.
Aesthetically Pleasing
The GL 90 composting toilet features a porcelain pedestal that looks just like any modern flush toilet. This makes it suitable for any bathroom decor from modern tiny house to more traditional mountain cabin.
Split System Design
The GL 90 falls into the category of split-system composting toilets which means that the toilet inside is separate from the composting unit located under the floor level. This design brings a number of advantages:
- Aesthetically pleasing, familiar looking porcelain pedestal inside the bathroom. Everyone can use without any special how-to-use instructions. Also, nobody can break the system simply by using it.
- Service of the toilet is always done outside, keeping the indoors space always clean.
- Relatively large capacity. GL 90 composting toilet will go months in use without the need for service (in family-use).
Adaptable Capacity
The GL 90 is not only a split-system composting toilet, it is also a batch composting toilet.
This means that you can always extend the capacity of the system according to the number of toilet users. The standard package comes with two GL 90 composting containers fit for 1-4 persons’ seasonal family use. If there are more people using the toilet or the toilet is used year-around it may be worth to buy a third GL 90 composting container.
Efficient Moisture and Odor Control
The GL 90 features containers designed with a double base and a capillary tray. This setup separates excess liquid from solid waste, maintaining optimal moisture for composting (= not too wet nor too dry) and ensuring an odorless experience.
Customer Reviews
We have been building a small, off grid hut/cabin on our Utah mountain property. We were looking to build something small, simple and low maintenance. Our power is all 12 volt solar and we carry in water. This cabin will be seasonal (no septic)so the toilet had to be simple too. Other composting toilets have too many moving parts and a low capacity. After much research we decided on the GreenLoo GL90. I love the low profile composting bins. We decided to build an attached mechanical room/outhouse/shower room and built it to suit the toilet specifically. The GL90 porcelain toilet is tall and easy to keep clean. I ordered the 12v vent fan with my kit and it works perfectly NO smell at all! I turn off the solar when we leave so I was concerned it would smell upon our returns. So far so good! We are going to install a “whirlybird” wind activated vent cap to vent in addition to the electric fan while we are away from the cabin. Install of the GL90 was a breeze and it looks great! Big thanks to the good folks at The Waterless Toilet Shop for their friendly support and expertise.. and a full line of supplies and accessories! I’m adding some photos of the Toilet and build so far!
Jim M.
Salt Lake City, UT
We built a short term rental cabin on our homestead to creat another income stream in an environmentally sustainable way. After growing up off the grid, and traveling/camping around the world, my wife and I have tried just about every composting toilet system on the market. We have even owned a few of the nicer brands, but never found one like The Green Loo. This system far exceeds the competition, and has everything we want in a composting toilet system. Most notably, it is easy and straightforward to use, easy to clean/service, and is made of quality components that are meant to last. I am a carpenter, but the installation process is simple and can be done with basic carpentry knowledge and tools. The instructions that come with the toilet are also very Clear and helpful. Ordering from the waterless toilet shop was great, Eemeli is very responsive and communicative. Eemeli helped me with my custom chute order, and when the shipping company damaged, then lost the chute, Eemeli immediately sent me a replacement. I highly recommend ordering from the Waterless Toilet Shop, they offer quality products at competitive prices and customer service and support that goes above and beyond what is customary.
We are pleased to hear of Greenloo’s expansion to Canada/US markets. We are very happy with our GL 90 maximizer composting toilet. Instructions followed make a comfortable and sophisticated toilet situation. The unit was well received (exception whirlybird fan option was slightly damaged - not Greenloo fault - aside from shipping damage we needed to remove and reinstall the fan’s interior veins as they were upside down? Just so you know).
We live in a rural area, off grid and the two of us provide the Greenloo continuous use as we live here full time. It is an excellent unit overall particularly when compared with competitor models of strange or potentially messy maintenance no one wants for sure. We dug a big hole and filled with compost from toilet for our lovely maple tree (not edible and ornamental) and it is doing great. Thank you for a great product.
The toilet I have bought 5 years ago is great. Easy to install. Easy to change storage.
Feels wonderful to sit on. Awesome having no smell in bathroom.
Good price also.
