I. System Selection & Application Scope
Q1: Where can ZM06 Polyaspartic Topcoat be used? Is it suitable for areas in long-term contact with water?
ZM06 is a high-solids polyaspartic coating suitable for swimming pools, roofs, bathrooms, balconies, and exterior walls that require long-term waterproofing and UV resistance. It can be applied to permanently wet areas such as pools, fountains, and water features, provided the substrate is dry and properly prepared. Curing for at least 7 days before water immersion is recommended, along with a sample test for adhesion and impermeability.
Q2: How do I choose the right primer?
Select primer based on the substrate type:
- Cement/screed substrate: ST400 (strong sealing, high moisture resistance).
- Tile/marble/stone surfaces: ST300 (designed for dense substrates).
- Metal surfaces: Use a metal-compatible anti-rust primer.
Applying primer helps prevent bubbling, delamination, and peeling.
Q3: Which products can be combined with ZM06?
Recommended system combinations:
- ST400 + ZM06 + QT03 → Waterproof & weather-resistant system (roofs, terraces, bathrooms).
- ST300 + HL36 + QT03 → Decorative waterproof system (exterior walls, pools, landscape structures).
II. Construction & Application
Q4: What is the mixing ratio and pot life of ZM06?
ZM06 is a two-component system (A:B = 8:4 kg/set). Mix slowly for at least 2 minutes, let stand for 2–3 minutes for air release, and use within 30–60 minutes after mixing.
⚠Do not add water or solvent to extend pot life.
Incorrect mixing ratios or insufficient stirring may cause soft film, incomplete curing, or gloss loss.
Q5: What is the recommended thickness and theoretical consumption?
Each coat: wet film 0.15–0.2 mm, dry film 0.12–0.15 mm; two coats total 0.25–0.35 mm.
Theoretical consumption: 0.25–0.3 kg/m² per coat, depending on surface flatness and absorption.
Q6: How long should I wait between coats? What if I exceed the interval?
At 25°C: surface dry in 1–2 hours, recoating after 4–6 hours.
If over 24 hours, lightly sand and clean before recoating to avoid interlayer separation.
Q7: What are the environmental and weather requirements during application?
- Temperature: 5–35°C, humidity ≤ 85%, substrate moisture ≤ 8%.
- Avoid rain, dew, and high humidity during application.
- Substrate temperature must be 3°C above dew point to prevent whitening or gloss loss.
- For winter construction (<10°C), extend curing time (up to 48–72 hours) and prevent condensation.
- Store and transport above 0°C — protect from freezing.
Q8: What application methods are recommended?
Apply by roller, trowel, or airless spray.
For vertical surfaces, roller or trowel is preferred; for horizontal surfaces, spraying is efficient. Avoid dust contamination within 2 hours after application.
Q9: How soon can the surface be walked on or filled with water?
At 25°C: surface dry in 2 hours, fully cured in 24 hours.
For heavy traffic or water immersion, wait ≥7 days to ensure complete curing and adhesion.
Q10: What surface preparation is required before coating?
Clean off oil, dust, and residues; ensure the surface is clean and dry.
If the substrate is powdery or hollow, repair and grind before coating. Contamination is a major cause of poor adhesion.
Q11: Can ZM06 be used for recoating over existing waterproof layers?
Yes, provided the existing layer is firm, non-powdery, and oil-free.
Perform a compatibility test, apply a primer if necessary, and lightly sand before recoating.
Q12: Can ZM06 be tinted or used with matte / anti-slip effects?
Yes. Custom colors can be made per RAL or Pantone charts.
For matte or anti-slip effects, use matte clear coats or add fine sand / microbeads after testing the desired texture.
III. Performance & Durability
Q13: What are the key performance properties of ZM06?
According to lab tests:
- Adhesion: Grade 0–1
- Shore hardness (D): ≈70
- Flexibility: ≤2 mm
- Water resistance (168 h): no blistering or peeling
- Alkali resistance (48 h): no abnormality
- Impact strength: 50 kg·cm
- Gloss (60°): 50–70°
All data comply with GB/T, ASTM, and ISO standards, with third-party or VOC certification available.
Q14: Is ZM06 resistant to chlorine and pool chemicals?
Yes. It withstands ≤5 ppm chlorine and neutral or mildly alkaline cleaners.
Avoid long exposure to strong acids, alkalis, or concentrated chlorine, which may cause surface dulling or aging.
Q15: What is the expected service life of the system?
When properly applied and maintained, service life is 8–10 years.
A surface inspection every 2–3 years, followed by a QT03 clear coat refresh, is recommended.
Q16: How can the system be renewed after 8–10 years?
If the old film remains sound, sand lightly and reapply QT03.
If aging or peeling occurs, recoat with the full ZM06 + QT03 system.
Inspect and maintain every 5 years for best long-term performance.
IV. Maintenance & Repair
Q17: What should I do if minor cracks or dullness appear?
Small cracks from thermal expansion are harmless. Lightly sand and recoat locally, or apply a new QT03 layer for enhanced gloss and protection.
Q18: How to handle bubbling or whitening issues?
- Bubbling: Caused by substrate moisture or thick coating. Cut, vent, sand, and recoat.
- Whitening: Usually from condensation or rain. Dry and reapply a thin coat after ventilation.
Q19: How to avoid surface contamination or color variation?
Purchase all materials in one batch for a single project.
Avoid high humidity during application and ensure clean tools to prevent dust contamination and uneven color.
V. Warranty & Technical Service
Q20: What is the warranty period and coverage?
Huacheng offers a 12-month material warranty covering product quality issues.
Warranty excludes defects caused by weak substrates, improper mixing, incompatible materials, or extreme conditions.
Labor and auxiliary materials are not included.
Q21: How does Huacheng handle on-site issues?
The company will analyze samples and site conditions, provide rectification guidance, and, if necessary, dispatch technical engineers for on-site support.
Q22: Is technical assistance available for contractors?
Yes. We provide application manuals, training videos, and remote support.
For large-scale projects, on-site technical training can be arranged.
VI. Environmental, Safety & Export Compliance
Q23: Is ZM06 classified as hazardous material? Can it be exported?
ZM06 is non-hazardous, compliant with IMDG Class shipping regulations, and safe for both sea and air freight.
Q24: What about VOC content and environmental performance?
ZM06 is a high-solids, low-VOC polyurea system with minimal odor.
Third-party VOC and environmental reports are available upon request.
Primers and topcoats are waterborne and eco-friendly.
Q25: How should tools be cleaned after use?
Before curing: clean with water.
After curing: remove mechanically.
Dispose of waste properly — do not discharge into storm drains.
VII. Common Misunderstandings & Clarifications
Q26: Does polyurea always require special spray equipment?
No. ZM06 uses a modified polyaspartic polyurea formulation that can be rolled or sprayed manually, without high-pressure dual-component machines.
Q27: Is ZM06 a waterborne coating?
No. It’s a high-solids polyurea (non-waterborne) system with low VOC and low odor, safe for humans and the environment.
It is fully compatible with waterborne primers and clear coats.
Q28: Can ZM06 be used in potable water tanks?
Not recommended. For drinking water applications, use certified potable-water-safe waterproof systems.
Q29: Will different batches have color variation?
Minor differences may occur between batches.
Order sufficient material at once or apply batch transitions at natural boundaries to maintain uniform color.