Flexible White Waterproofing Liquid Membrane System

Terrace Waterproofing System Using BS MoistureZero FPU

This section helps customers understand how BS MoistureZero FPU is used as a complete terrace waterproofing system. It is suitable for exposed concrete terraces, podium slabs, balconies, and non-garden roof areas. The system creates a seamless UV-stable waterproof membrane capable of bridging micro-cracks and protecting the slab from water penetration.

Typical Waterproofing Layer Build-Up

Concrete Roof Slab
↓ Surface Cleaning & Crack Repairs
↓ Primer Coat (BS SmartPrimer WB EP or MoistureZero FPU diluted 1:1 with water)
↓ 1st Waterproofing Coat – BS MoistureZero FPU
↓ Optional Fiber Mesh Reinforcement at joints, cracks, drains
↓ 2nd Waterproofing Coat – BS MoistureZero FPU
↓ 3rd Protective Coat – BS MoistureZero FPU
↓ Seamless Flexible Waterproof Membrane
Final thickness: 900 microns – 1.5 mm

Step-by-Step Application System

Step 1 – Surface Preparation

Surface must be:

• Clean and structurally sound
• Free from dust, oil and loose particles
• Properly repaired at cracks and joints

Hairline cracks should be filled before coating.

Step 2 – Primer Coat

Apply primer to improve adhesion. Two options:

Option A – Recommended
Use BS SmartPrimer WB EP

Option B – Economical
Dilute MoistureZero FPU with water in 1:1 ratio
Allow 4–5 hours drying time.

Step 3 – First Waterproofing Coat

Apply BS MoistureZero FPU diluted up to 10% water. Use:

• roller
• brush
• airless spray

Ensure uniform coverage.

Step 4 – Reinforcement Layer (Critical Areas)

Embed fiberglass mesh or polyester fabric at drainage outlets, construction joints, pipe penetrations, and crack-prone areas. This improves long-term durability.

Step 5 – Second Coat

Apply second coat perpendicular to the first coat. Dilution: up to 5% water. Allow 5–8 hours drying time.

Step 6 – Third Coat (Recommended for Terraces)

Apply third coat to achieve required membrane thickness. Final membrane thickness: 900 microns – 1.5 mm

System Advantages

• Seamless waterproof coating without joints
• Flexible membrane with ≥300% elongation
• UV resistant – suitable for exposed terraces
• Crack-bridging performance
• Durable coating for light pedestrian maintenance traffic

Typical Consumption

Consumption may vary depending on surface texture and film thickness.

Best Use Cases

This system is ideal for:

• exposed terrace slabs
• podium slabs
• balconies
• metal roofs
• maintenance waterproofing of old roofs

Contractor Tip

For maximum durability:

• Ensure minimum 3 coats on terraces
• Reinforce joints, corners and drainage outlets
• Maintain uniform film thickness

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