Comparing the Options: Choosing the Right Waterproofing System for LEED Buildings in Metro Manila

Joanna Fungo
Oct 11
2 min read

Compare waterproofing systems for LEED projects. Discover which system offers the best balance of durability, maintenance, and sustainability with Everdry Waterproofing.

Building Green Starts from the Top — Literally.

When it comes to LEED-certified construction, every material choice affects your building’s sustainability score and long-term performance — including your roof waterproofing system.

In Metro Manila’s unpredictable climate of extreme sun and monsoon rains, the right waterproofing system ensures not only leak protection but also energy efficiency, reduced heat absorption, and compliance with LEED standards.

Below is a practical comparison of the most common systems used in the Philippines — from traditional cementitious coatings to advanced TPO membranes — highlighting their durability, maintenance needs, and sustainability potential.

Comparing the Options Choosing the Right Waterproofing System for LEED Buildings

System Type	Durability	Maintenance	LEED Potential	Ideal For
Cementitious	Moderate	Regular re-inspection	Low VOC	Light projects, minor retrofits
Bituminous Membrane	High	Periodic seam checks	Low–Moderate	Standard commercial decks
Liquid-Applied Membrane	High	Easy re-coating	Medium–High	Irregular or detailed roofs
TPO Membrane	Very High	Minimal	High (cool roof, recyclable)	LEED-oriented and long-term builds

1️⃣ Cementitious Waterproofing Systems — Economical and Practical

These polymer-modified coatings are ideal for basements, bathrooms, or retrofits. They use low-VOC materials and simple application methods. However, they require regular inspection and are less flexible for exposed decks.

✅ Best for small projects or internal waterproofing where LEED “Low-Emitting Material” credits apply.

2️⃣ Bituminous Membranes — Proven Strength for Commercial Roofs

Torch-applied membranes remain a trusted solution for flat roofs and podium decks. Their excellent water resistance makes them ideal for heavy rainfall exposure. To align with LEED goals, pair them with reflective coatings to reduce heat gain and qualify for Heat Island Reduction credits.

3️⃣ Liquid-Applied Membranes — Seamless, Sustainable, and Smart

Applied like paint, these systems form a joint-free waterproof layer ideal for complex shapes and detailed roofs. Modern formulations are low-VOC, UV-resistant, and re-coatable, providing both flexibility and sustainability.

✅ Recommended for LEED projects requiring energy-efficient and low-emission materials.

4️⃣ TPO Membranes — The Gold Standard for LEED Projects

TPO (Thermoplastic Polyolefin) membranes are the leading choice for green and energy-efficient roofs. They reflect sunlight, resist UV damage, and are fully recyclable. A TPO “cool roof” can reduce surface temperature by up to 30°C, cutting energy use and enhancing occupant comfort.

✅ Earns LEED credits under “Heat Island Reduction,” “Energy Optimization,” and “Material Reuse.”

Making the Right Decision

Selecting a waterproofing system isn’t just about cost — it’s about lifecycle value, maintenance savings, and LEED compliance.

At Everdry Waterproofing, we help architects, builders, and property owners choose systems that meet both technical performance and sustainability goals. Our team provides LEED documentation support, VOC data sheets, and technical specifications to ensure compliance from procurement to installation. Choosing the Right Waterproofing System for LEED Buildings