S-Trap vs. P-Trap: Which One is Right for Your Bathroom?
What Are S-Trap and P-Trap?
A toilet trap is designed to prevent sewer gases from escaping into your bathroom while ensuring efficient wastewater drainage. The main difference between an S-Trap and a P-Trap is how the waste exits the toilet.
- S-Trap: The waste pipe goes downward into the floor before curving back up in an “S” shape.
- P-Trap: The waste pipe extends horizontally into the wall in a “P” shape before draining away.
Differences Between S-Trap and P-Trap
How to Choose Between S-Trap and P-Trap?
A. Check Your Existing Plumbing
If your bathroom has a floor drain, you’ll need an S-Trap toilet.
If your bathroom has a wall drain, a P-Trap toilet is the right choice.
B. Think About Cleaning & Maintenance
P-Trap and S-Trap toilets have different cleaning needs. Wall-mounted P-Trap toilets make floor cleaning easier since there’s no base in the way. However, floor-standing models of both P-Trap and S-Trap toilets may require more frequent cleaning around the base due to water exposure from mopping.
C. Consider Your Bathroom Layout
- S-Trap works well for various renovation needs and is easy to install in bathrooms with existing floor drainage.
- P-Trap is designed for wall drainage systems, and some wall-mounted P-Trap toilets can hide plumbing within the wall, helping to optimize space.
Understanding Trap Distance: S-Trap & P-Trap Dimensions
📌 S-Trap Trap Distance (Floor Drainage)
S-Trap toilets have their waste outlet on the floor, so the trap distance is measured from the wall to the center of the outlet. Tesvila offers:
- 150mm (Standard for many bathrooms)
- 250mm (For larger clearance or specific plumbing setups)
📌 P-Trap Trap Distance (Wall Drainage)
P-Trap toilets have their waste outlet on the wall, so the trap distance is measured from the floor to the center of the outlet. Tesvila offers:
- 180mm (A common standard for wall-mounted systems)
📌 Why Does Trap Distance Matter?
- Choosing the correct trap distance prevents misalignment during installation.
- Incorrect sizing may require additional plumbing modifications, increasing costs.
- Checking your existing plumbing setup before purchasing ensures a hassle-free installation.
Conclusion: Which is right for you?
✔ S-Trap is designed for floor-outlet drainage, making it a versatile choice for various bathroom layouts and compatible with floor-mounted toilets.
✔ P-Trap is suited for wall-outlet drainage and works with both floor-mounted and wall-hung toilets, offering a concealed pipe setup for different design preferences.
✔ The key factor in choosing between them is your bathroom’s drainage system. If you have a floor drain, S-Trap is the ideal choice. If your setup features a wall drain, P-Trap is required.
