Introduction: Why Maintain TPO Waterproofing Systems?

According to NRCA research, the average lifespan of a TPO waterproofing system that is not regularly maintained is only 15-20 years, while scientific maintenance can extend it to more than 30 years. A supermarket chain neglected maintenance, resulting in damage to cold storage equipment due to roof leakage within 5 years, with cumulative losses exceeding 3 million yuan.

Tips to Maintain TPO Waterproofing

Tip 1: Regular Cleaning & Debris Removal

• Soft brush (avoid scratching the surface)
• Low-pressure water gun (pressure < 50 bar)
• Cleaning agent

• Quarterly inspection: remove hard objects such as gravel and branches.
• Annual deep cleaning: Use a neutral detergent with a pH value of 6-8 to scrub the surface.

• Strong acid/alkaline solvents (such as hydrochloric acid and sodium hydroxide) are prohibited.
• Avoid high-pressure water guns directly hitting the joints.

Tip 2: Inspect Seams & Damage Points

4-Step Self-Check

1. Visual Check (sunny days):

• Look for bulges, wrinkles, and discolored areas.
• Use drones for large areas.

2. Manual Check:

• Feel along the seam to check for warping or looseness.
• Press the suspected area to feel for hollows underneath.

3. Water Test:

Pour 5 liters of water on the suspected area and observe for 2 minutes to see if it penetrates.

4. Professional Tools:

Infrared thermal imaging camera locates hidden leaks.

Tip 3: UV & Thermal Stress Management

Science of Thermal Stress

The thermal expansion and contraction experienced by TPO membranes can reach 2%-3% every day, and long-term accumulation can lead to fatigue cracking of the joints.

3-Layer Protection

1. Reflective Coating: Apply nano-reflective paint every 3 years.

2. Shading Systems: Retractable shades reduce surface temp by 20℃.

3. Drainage Optimization: Ensure the slope is ≥2% and the drainage outlet is not blocked.