Anti-Crack Fiber for Architectural Coatings
Anti-crack fibers for architectural coatings are short polypropylene or polyvinyl alcohol (PVA) fibers incorporated into render, plaster, and masonry coating systems to reinforce the dried film and prevent shrinkage cracking. The randomly oriented fiber network distributes stress uniformly throughout the coating matrix, significantly reducing crack propagation and improving impact resistance. These fibers are essential additives in thick-film texture coatings, external insulation systems, and repair mortars.
Technical Specifications
| material | Polypropylene or PVA |
| appearance | White short-cut fibers |
| fiberLength | 3–12 mm |
| fiberDiameter | 12–30 μm |
| recommendedDosage | 0.1–0.3 kg per 100 kg mix |
Applications
- Exterior render and plaster systems
- EIFS/ETICS thin-coat finishes
- Repair mortar formulations
- Thick-film texture coatings
- Cementitious waterproofing coatings
Key Features
- Prevents shrinkage cracking in render and plaster
- Uniform stress distribution in coating matrix
- Improves impact and abrasion resistance
- Easy to disperse in wet mortar systems
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