Uneven Surface After Waterproof Coating Application? Chemi Tech Defoamer Solution

Uneven surfaces after waterproof coating application often result from trapped bubbles, improper mixing, or incorrect techniques. Chemi Tech defoamers effectively address these issues, ensuring uniform coating adhesion.  

Key Causes:  

1. Bubble Trapping: Air introduced during mixing or application forms micro-bubbles, leaving pits after drying.  

2. Viscosity Issues: High viscosity hinders bubble escape; low viscosity causes sagging, both affecting smoothness.  

3. Substrate Problems: Uneven substrate absorption or contamination leads to localized shrinkage or bubbling.  

Chemi Tech Defoamer Benefits:  

- Rapid Bubble Breaking: Advanced formulations eliminate micro-foam promptly, minimizing surface defects.  

- Broad Compatibility: Works with solvent-based, water-based, and other coating systems without compromising film formation.  

- High Stability: Maintains performance under high-temperature or high-shear conditions, preventing re-foaming.  

Application Tips:  

1. Add defoamer at 0.1%-0.5% dosage, mix at low speed to avoid new bubbles.  

2. Inspect substrate flatness; sand or seal if necessary before coating.  

3. Control thickness and drying speed for roller/spray applications.  

Chemi Tech defoamers are widely used in waterproofing projects to enhance coating aesthetics. Contact our experts for technical support.