90% of Leaks Come from 1% of the Surface — Here’s Why

Megan Chua
Sep 23
2 min read

Waterproofing Philippines | Stop Leaks Before They Start | Everdry

In the Philippines, where heavy rains and typhoons are common, water leaks can be a nightmare for both residential and commercial property owners. What most people don’t realize is that leaks rarely start in the middle of a roof or wall. They creep in through the smallest details—joints, terminations, and transitions.

Industry studies confirm it: 90% of leaks come from just 1% of the building surface. That means the real risks lie in the details, not the open surfaces.

Common Sources of Leaks

At Everdry Waterproofing Philippines, we’ve inspected countless buildings—residential and commercial—and the same culprits keep showing up:

1. Roof Decks & Flat Surfaces

Poor slope that causes ponding water.
Clogged drains and scuppers.
Cracks in concrete topping and failed sealant at penetrations.

💡Pro tip: The ideal slope is 1/4 in./ft., which ensures faster drainage during heavy rains.

2. Walls & Vertical Surfaces

Hairline cracks or structural cracks.
Failed sealant joints at expansion or control joints.
Porous finishes and deteriorated mortar joints.

3. Windows, Doors & Openings

Brittle or defective sealants around frames.
Blocked or missing weep holes.
Missing sill flashings or frame misalignments.

4. Parapets, Balconies & Planters

Poorly sealed parapet caps and coping joints.
Cracks and ponding in balcony slabs.
Planter penetrations for pipes or lighting that break waterproofing layers.

5. Below-Grade Areas (Basements, Tanks, Retaining Walls)

Poor grading directing water toward foundations.
Hydrostatic pressure pushing water through wall-to-floor joints.
Damaged or clogged sub-drains and sump pumps.

6. Transition Weak Points

Roof-to-wall junctions.
Window-to-wall transitions.
Wall-to-floor joints.
Changes in material (e.g., concrete to curtain wall).

Everdry’s Proven Approach to Waterproofing

At Everdry Waterproofing, we follow a three-step process trusted by commercial developers and now available to homeowners:

Start with the Problem – Inspect and identify the real sources of leaks.
Design Solutions Based on the Problem – Recommend the right systems and materials, not shortcuts.
Finalize with Proper Detailing – Ensure every termination, joint, and transition is sealed for long-term performance.

Why Work with Everdry Waterproofing Philippines?

🏢 Commercial Expertise, Residential Care – Our team has handled high-rise towers, commercial complexes, and critical facilities. That same level of expertise goes into every project, big or small.
💧 Holistic Waterproofing Systems – We don’t just patch leaks. We create systems that prevent them from coming back.
✅ Peace of Mind – Protect your property, reduce maintenance costs, and ensure long-term durability.

📞 Contact us today at Everdry Waterproofing Philippines to schedule a professional leak inspection and consultation.