Leakage of Mobile Toilet on Roof Terrace

Leakage of mobile toilets on roof terraces may be caused by issues with the waterproof layer, piping system, drainage system, equipment seals, building structure or installation problems, clogging of the top drainage outlet, aging of door seals, or脱落 (peeling off) of sealant at connections, requiring targeted investigation and resolution.

Common Cause Analysis

1. Waterproof Layer Issues
   After prolonged use, the waterproof layer of mobile toilets may experience leakage due to aging, cracking, or poor construction quality. If secondary waterproofing is not properly done, such as unsealed floor drains or pipe joints, moisture can penetrate through weak points. Additionally, building structure issues (such as wall cracks or ground settlement) or inadequate protection of finished products during installation may also damage the waterproof layer.

2. Piping System Issues
   Water pipes may suffer from leakage due to long-term exposure to water pressure, water quality erosion, or loose or broken joints, especially in winter when they are prone to freezing and cracking. Poor sealing or inadequate embedding at connections of toilets, water tanks, and other equipment can also cause leakage. Improper handling of pipe sleeves passing through floor slabs (such as failure to fill with sealing material) increases the risk of leakage.

3. Drainage System Issues
   Leakage can occur when drainage pipes are blocked by foreign objects or when the drainage slope is insufficient, preventing water from being discharged promptly and leading to water accumulation. Improper installation of floor drains (such as loose joints or inappropriate equipment elevation) can cause backflow. When the top drainage outlet is clogged, rainwater cannot be discharged and may back up into the toilet interior.

4. Aging of Equipment Seals
   The seals or rubber gaskets of toilets, water tanks, and other equipment may gradually age and lose elasticity due to long-term exposure to moisture, resulting in seal failure. Aging door seals can also allow rainwater to seep in through door gaps.

5. Peeling Off of Sealant at Connections
   If the sealant at connections between the toilet and walls, floors, or other components peels off, gaps can form, allowing water to penetrate through these gaps.

Targeted Solutions

1. Regular Inspection and Maintenance
   Regularly inspect pipes, seals, and the waterproof layer, clear foreign objects from drainage pipes, and repair aged or damaged components. If leakage is severe, contact professional maintenance personnel to investigate structural issues (such as wall cracks or ground settlement).

2. Address Piping and Drainage Issues
   Check water pipe joints for looseness or breakage and promptly replace damaged components. Clear debris from the top drainage outlet to ensure smooth drainage. Adjust the installation position of floor drains to ensure tight joints and appropriate elevation for drainage needs.

3. Replace Aged Components
   Replace aged door seals, seals, or rubber gaskets, and use waterproof glue to repair gaps. Reapply sealant at connections to ensure a tight seal.

4. Professional Repair and Reinforcement
   If leakage is caused by building structure issues (such as wall cracks or ground settlement) or improper installation, contact professionals to reinforce the structure or reinstall equipment, and ensure proper protection of finished products.