TPUCO’s CNS 8644-Compliant Waterproof Coatings

Product Selection Cheat-Sheet
• Need maximum overall performance (the highest tensile strength, weatherability, and service life)? → CPU-49-WP101I-A/B
• Need exceptional flexibility to cope with movement? → CPU-184-UT50B-A/B
• Want a product that delivers consistent, well-balanced performance in every CNS 8644 test? → CPU-49-MF-14H-A/B
 
CNS 8644 Test Results—TPUCO High-Elongation PU Series
✅ = meets the CNS 8644 top benchmark

How to Pick the Right Grade

1. Maximum tensile strength
   CPU-49-WP101I-A/B delivers the highest values at all temperatures (up to 30 N/mm² at –20 °C).
2. Extreme temperature swing
   Again, CPU-49-WP101I-A/B offers the best strength retention from –20 °C to 60 °C.
3. High flexibility
   Both CPU-184-UT50B-A/B and CPU-49-WP101I-A/B hit 720 % elongation—ideal for roofs that move.
4. Tear resistance
   CPU-49-WP101I-A/B tops the chart at 48 N/mm. Choose it for heavy-duty, abrasion-prone areas.
5. Long-term durability
   In heat, UV, alkali, and acid aging, CPU-49-WP101I-A/B shows the best retention, making it perfect for sun-exposed roofs.

 
Material Consumption Guide
Packaging note – One “set” = 30 kg (A component 20 kg + B component 10 kg). Always round up to the next full set.
 
A. Flat surfaces (design rate = 1 mm ≈ 1.3 kg / m² per coat)


B. Vertical surfaces (design rate = 0.5 kg / m² per coat)


C. Primer / Base-coat / Top-coat (two layers each)
Design consumption:
• Primer = 0.3 kg / m² • Base-coat = 2.6 kg / m² • Top-coat = 0.6 kg / m²

* Figures exclude surface irregularities, waste, and weather-related losses. Adjust upward if the substrate is rough or highly absorbent. Actual usage varies with application method, coat thickness, and surface profile.
 
Recommended Reading Topics (Click to explore)

1. How to Choose High-Quality Waterproofing Materials
2. How CNS 8644 Helps Regulate Waterproofing Material Standards
3. Detailed Requirements of CNS 8644 — Roofing & Balcony Applications
4. TPUCO’s CNS 8644-Compliant Waterproof Coatings
5. Professional Contractors vs. DIY — Which Should You Choose?
6. Why You Need Primer, Base Coat, and Top Coat in Waterproofing
7. Real-World Waterproofing Case Studies and Success Stories

This guide combines international literature, in-house test data, and field experience. Results may vary with proprietary formulas or job-site conditions.
 
Need technical help or premium waterproofing products?
📞 Phone: +886 2229 91666
📧 Email: pu@taiwanpu.com
 
Link to TPUCO products:
Fast drying polyurethane coating:
https://www.taiwanpu.com/en/product/Fast-drying-polyurethane-coating