Why does my flat roof leak again after being repaired?

Flat roofs often leak again due to poor workmanship, improper repair materials, or failure to address the root cause of the leak. Quick fixes like silicone patches can crack or peel, especially if the roof wasn't cleaned or primed correctly.

Is it worth coating a flat roof with silicone?

Silicone coatings can be effective if the roof is in decent condition and prepped properly. However, they are not a miracle solution. If there are saturated areas, trapped moisture, or poor slope, the coating may fail prematurely.

How do I know if my flat roof has trapped moisture?

Signs of trapped moisture include bubbling, blistering, or a spongy feel when walking on the roof. A proper inspection with an infrared scan or moisture probe is often needed to confirm hidden saturation.

What’s better — repairing or replacing a flat roof?

If your flat roof has been repaired multiple times and still leaks, it’s often more cost-effective to replace it with a modern 2-ply or single-ply system. Repairs are only a short-term fix when the underlying issues are not addressed.

What is the best long-term repair for a flat roof?

The best long-term fix usually involves removing saturated insulation, repairing the substrate, and overlaying with a proper system like SBS or TPO. A warranty-backed, professional repair with proper drainage design is key.

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