Illustration of Bathroom Leak Analysis

Toilets are prone to leaks. Over time, with the use of the toilet, domestic water can seep through the toilet floor and internal plumbing, accumulating in the sump pit instead of being drained. Once the sump is full, water can easily leak through cracks, along the walls of the pipes, down to the floor below and seep under the threshold stone into the living room. The water then spreads across the cement mortar layer beneath the tiles, flooding the area. Relying solely on the drain in the toilet's tiled surface does not solve the internal leakage issue. If the toilet is not properly waterproofed and leaks occur, it not only wastes time but also costs more money.
Bathroom Waterproofing Construction Diagram

Toilets feature combined waterproofing with both prevention and drainage.
The toilet sump can be understood as a storage space for water within a bathroom. The bathroom is combined with a waterproofing layer and a drainage layer, allowing domestic water to seep through the bathroom's decorative layer into the sump. It is then directly drained out through the anti-drainage layer and the drain outlet, ensuring a combination of prevention and drainage without any water accumulation, thereby eliminating the risk of leaks.
Features of Waterproofing for Kitchen, Bathroom, and Balcony
Moisture and dampness can lead to water accumulation at the bottom of the sediment pond.
2. Many pipe root nodes, diverse interfaces.
3. Waterproofing treatment for odd-shaped corners, irregular bases, blind spots, and other special areas can be quite challenging.
Principles for Waterproofing Materials in Kitchen, Bathroom, and Balconies
1. Waterproofing in kitchen and bathroom areas, as well as balconies, is challenging to repair later, is costly, and requires uncovering all structural layers, redoing the waterproofing, and then restoring them. Repair costs can be 5-10 times the initial investment. Waterproofing is a one-time opportunity; it requires a strong and reliable bonding of the waterproof layer and a sealing layer.
2. Flexible material, conquer cracks with flexibility.
3. Features excellent matching sealing materials, capable of effectively sealing multiple interfaces such as plastic, rebar, concrete, as well as various structures like pipe ends and right-angle corners.
4. Moisture and humidity are suitable for construction.
5. Waterproofing is a comprehensive engineering system that requires close collaboration between engineering management and materials engineering. Neglecting any aspect can lead to failure in waterproofing. Therefore, it is crucial to coordinate the design, material selection, construction, and maintenance processes. Ensure a thorough design review from the outset, select appropriate waterproofing materials based on fundamental principles, choose a professional waterproofing contractor, and execute meticulous construction and management.
Detailed construction drawing of combined waste and drainage in toilet

A sunken toilet room, also known as a sunken bathroom, refers to a bathroom structure that is partially or fully sunken to a certain height (usually 35-40cm below the corresponding floor) during the main construction. This allows the horizontal drainage pipes of the bathroom to be buried within it. Then, lightweight materials are backfilled or prefabricated boards are suspended, with the sunken structure only requiring waterproof and drainage measures at the bottom. This ensures that any leakage in the bathroom flows into the sunken compartment, where it is then drained out, preventing water accumulation in the bathroom. Waterproofing the bathroom walls up to 2.4 meters high is not only for防水 purposes but also to block moisture. Most households would have a wardrobe on the opposite side of the bathroom wall, and waterproofing can prevent moisture from seeping through the walls into the wardrobe, thus avoiding dampness, mold, and deformation. Areas requiring waterproofing include not only the bathroom but also the kitchen and balcony.































