[Case study - 47] Installing a basement WC without floor cutting using the Sanitoilet solution
A 6-story renovation project in Nguyen Trai needed to add a basement WC despite having no existing drainage system. Discover how SFA Pumps solved this challenge.

When renovating a property for rental purposes, optimizing functionality often comes with complex technical challenges. In particular, basement areas—where no drainage system is available—are typically considered unsuitable for installing a toilet using conventional methods.
This was exactly the situation faced by a property owner in Nguyen Trai, who wanted to upgrade the amenities of her 6-story building during its conversion into rental units.
Key highlights
- Situation: Renovating a 6-story building, requiring a new toilet in the basement
- Problem: No existing drainage system and limited ability to modify the structure
- Solution: Use Sanitop to collect and pump wastewater to the existing drainage system
- Result: A fully functional WC installed without drilling, ensuring stable operation
Problem
Basement areas are typically located below the main drainage system of a building, making gravity-based drainage nearly impossible. In this case, installing new pipework or drilling into the floor to modify the existing system was not a viable option due to structural constraints and cost concerns.
Additionally, renovation projects in completed buildings require minimizing construction impact to maintain timelines and avoid unnecessary expenses.
Solution
To address this challenge, SFA Pumps Vietnam recommended Sanitop—an integrated wastewater lifting unit that enables toilet installation in locations without direct access to a drainage system.
Sanitop collects wastewater from the toilet and pumps it up to the existing drainage pipes at a higher level. This allows the owner to install a fully functional WC in the basement without altering the building structure.
This solution is especially suitable for renovation projects where flexibility and minimal construction are key priorities.
Read more: Sanitoilet solution – install a toilet wherever you want!
Result
The basement WC was completed quickly without any floor drilling or structural modifications. The system operates reliably, with wastewater effectively collected and discharged, meeting the daily usage needs of tenants.
This solution also helped reduce renovation costs and shorten installation time, while enhancing the overall value and usability of the property.
Conclusion
Adding a toilet in challenging locations like basements is no longer a major obstacle when the right solution is applied. With Sanitop from SFA Pumps Vietnam, property owners can flexibly optimize their layouts without complex construction work. This makes it an ideal solution for renovation projects, rental properties, and commercial spaces.
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Any questions ?
Yes. With Sanitop, wastewater can be collected and pumped to an existing drainage system located at a higher level.
No. Sanitop is designed for quick installation without the need to modify floors or existing structures.
Sanitop is typically used for toilets and can also connect to a wash basin, making it suitable for basic bathroom setups.
Absolutely. Sanitop helps optimize space, improve convenience, and increase the value of rental properties.
Yes. With Sanitop, wastewater can be collected and pumped to an existing drainage system located at a higher level.
Sanitop is typically used for toilets and can also connect to a wash basin, making it suitable for basic bathroom setups.
No. Sanitop is designed for quick installation without the need to modify floors or existing structures.
Absolutely. Sanitop helps optimize space, improve convenience, and increase the value of rental properties.