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GL 90
Batch composting toilet
$1,349.00
Discover waterless sanitation with the GL series. Our innovative GL 90 model offers a sophisticated, split-system design that includes a ceramic toilet and external compost bins. This design not only simplifies the service of the toilet but also significantly enhances user experience.
Each GL unit features a stylish porcelain pedestal that adds elegance to any bathroom space. The GL 90 is perfect for full-time use of 1-3 individuals or part-time use of up to 4 people. The system’s capacity can easily be extended with additional GL 90 composting containers. Each optional spare container purchased adds 1 – 3 people extra to this capacity. This makes the GL 90 ideal for regular use in holiday homes, cabins and tiny houses with limited space below bathroom floor level. The standard package includes two GL 90 composting containers that make the service of the system a breeze.
18" Below clearance required
Shipping from Nevada
Certified Product
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.
The system's capacity can easily be expanded with additional spare containers.
The GL 90 is a certified product Manufactured to: AS/NZS 1546.2:2008 - On-site domestic wastewater treatment units – Waterless composting toilets.
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
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 an optional accessory called Compost Maximizer for the GL 90 . 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.
Can the pipe to the batch container be extended to a lower level?
Yes, the pipe can easily be extended to allow a drop of up to 10 feet. Even longer drops are possible, depending on the specific situation. We offer waste pipe extensions by the foot in our online store. You’re also welcome to contact us for more details about extending the waste pipe. Click here to see a photo of how the pipe can be extended using our green waste pipe extension.
How much space do the toilet and containers require?
You can find the exact dimensions of the porcelain toilet [click here]. The GL 90 composting bin measures 24″ x 24″ x 18″, which means you’ll need a minimum of 18″ of underfloor space beneath the building. Additionally, the access to underneath must be at least 24″ wide.
If you do not have the space below, please consider our self-contained waterless toilets.
📱(702) 328 0689
✉ info@waterlesstoiletshop.com
Specifications
| Feature | Specification |
|---|---|
| Product | GL 90 |
| Recommended For | – |
| Capacity | 1-3 People Full-Time Use |
| Average Daily Visits | 10 |
| Container Length | – |
| Container Width | 24″ |
| Container Height | 18″ + Up To 22″ Chute Extension |
| Container Depth | 24″ |
| Minimum Under Floor Space Requirement | 18″ |
| Volume Per Container | 24 Gallons |
| Container Weight (Empty) | – |
| Toilet Weight | 60 lbs |
| Total System Shipping Weight | 118 lbs |
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 finish installation, you will need to source ventilation pipes from your local hardware store. Alternatively, you may purchase a ventilation pipe package separately from us.
Optional accessories
- Ventilation Pipe Package
- Extra Spare Container
- Whirlybird
- Solar Panel fan
- Hemp Dry Material Packages
- Fan Replacement*
*Recommended for off-grid installations without electricity. Use the coupon code “DROP FAN” at checkout to remove the electric 12V fan from the basic package and receive a discount for its exclusion.
*We recommend considering the purchase of a replacement fan along with your toilet, so you’ll have one on hand in case the original fan eventually needs replacing after year(s) of use.
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.
The system's capacity can easily be expanded with additional spare containers.
The GL 90 is a certified product Manufactured to: AS/NZS 1546.2:2008 - On-site domestic wastewater treatment units – Waterless composting toilets.
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
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 an optional accessory called Compost Maximizer for the GL 90 . 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.
Can the pipe to the batch container be extended to a lower level?
Yes, the pipe can easily be extended to allow a drop of up to 10 feet. Even longer drops are possible, depending on the specific situation. We offer waste pipe extensions by the foot in our online store. You’re also welcome to contact us for more details about extending the waste pipe. Click here to see a photo of how the pipe can be extended using our green waste pipe extension.
How much space do the toilet and containers require?
You can find the exact dimensions of the porcelain toilet [click here]. The GL 90 composting bin measures 24″ x 24″ x 18″, which means you’ll need a minimum of 18″ of underfloor space beneath the building. Additionally, the access to underneath must be at least 24″ wide.
If you do not have the space below, please consider our self-contained waterless toilets.
📱(702) 328 0689
✉ info@waterlesstoiletshop.com
Specifications
| Feature | Specification |
|---|---|
| Product | GL 90 |
| Recommended For | – |
| Capacity | 1-3 People Full-Time Use |
| Average Daily Visits | 10 |
| Container Length | – |
| Container Width | 24″ |
| Container Height | 18″ + Up To 22″ Chute Extension |
| Container Depth | 24″ |
| Minimum Under Floor Space Requirement | 18″ |
| Volume Per Container | 24 Gallons |
| Container Weight (Empty) | – |
| Toilet Weight | 60 lbs |
| Total System Shipping Weight | 118 lbs |
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 finish installation, you will need to source ventilation pipes from your local hardware store. Alternatively, you may purchase a ventilation pipe package separately from us.
Optional accessories
- Ventilation Pipe Package
- Extra Spare Container
- Whirlybird
- Solar Panel fan
- Hemp Dry Material Packages
- Fan Replacement*
*Recommended for off-grid installations without electricity. Use the coupon code “DROP FAN” at checkout to remove the electric 12V fan from the basic package and receive a discount for its exclusion.
*We recommend considering the purchase of a replacement fan along with your toilet, so you’ll have one on hand in case the original fan eventually needs replacing after year(s) of use.
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).
Extendable 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.
Option: Upgrade to Urine-Separating Porcelain Pedestal
By default, all our split-system composting toilets, including the GL 90, come with a high-quality non-separating porcelain pedestal. For those who prefer, we offer the option to upgrade to a urine-diverting porcelain pedestal. This design separates urine from solids at the the toilet seat, reducing odors and need for additional bulking agents.
Customer Reviews
GL 90
| 5 star | 100% | |
| 4 star | 0% | |
| 3 star | 0% | |
| 2 star | 0% | |
| 1 star | 0% |
Customer Images
I have not purchased yet but I plan to come next summer. I just wanted to give some recognition to your customer service employee Nicholas who answered my call he was very kind patient and helpful to me he was able to help me decide on the gl 90 system for my off grid ranch. Thank you for your help it means a lot
Enjoying the GL 90 We bought a property with a small cabin on it with a composting toilet. It was terrible! Lots of trouble, stinky etc. So I went on the hunt for a new one and found the GL90. I had my handyman install it. Actually we added a separate room on to the cabin. It turned out really cute. And the GL90 fits right in. Looks sleek and NO TROUBLE and no stink!!
A Game Changer We bought a 100 year old cabin with no running water and needed and indoor solution. Wife said she wouldn’t stay there until she didn’t have to make her way to the privy in the middle of the night.
So, after tons of research on all sorts of composting toilet models, we settled on the GL90. Since we are able to access the crawlspace below, it made sense to choose a model that gets the “mixing tub” out of the bathroom and down below. We went with installation option #2 (only seemed appropriate since it is a toilet!).The result is a toilet that looks like a toilet. And, the porcelain pedestal feels just like a traditional toilet.
Installation was straightforward and simple with the exception of the plastic tabs that the bowl gets screwed into to lock it in place. Took a few times to get it all lined up and did end up taking the oscillating tool the tabs, but it all came together and is nice a secure.
To power the fan, I added a dedicated switch powered outlet so there’s never a doubt if the fan is on or not. Mounted the outlet out of the weather underneath the cabin.
Top notch company and service! To anyone wanting to get more sustainable by using composting toilets, you will not regret working with Eemeli Palo at Waterless. He has the best customer service in a private company. I would put his customer service right up there with Costco. Not only are their products and prices SUPERIOR, his work ethic is top notch. Do yourself a favor and buy through him. You will save money, time, effort, and any headaches with Eemeli and his company. If I could give him 6 stars I would. This is my first time using this type of product and I look forward to it. I bought the GL-90. Have a great day.
Off Grid waterless toilet. We are off grid and wanted a composting toilet so we could use use huminor for our gardens. The installation was very easy and it works great. The toilet looks great in our bathroom, we are still finishing our cabin but we love this composting toilet. I did some research before purchasing and we are definitely not disappointed. Thank you Waterless toilet.