Which Fiber Mesh Is Best for Plastering?
The best fiber mesh for plastering is alkali-resistant fiberglass mesh, as it is specifically designed to work with cement-based plasters. It effectively controls shrinkage cracks, improves surface strength, and ensures long-lasting plaster performance on both interior and exterior walls.
Why Fiber Mesh Is Important in Plastering
Plaster surfaces are highly prone to cracking due to drying, shrinkage, and surface movement.
- Reduces hairline and shrinkage cracks
- Improves bonding of plaster to substrates
- Enhances durability of finished surfaces
Best Type of Fiber Mesh for Plastering
Alkali-resistant fiberglass mesh is the most suitable choice.
- Resists alkaline attack from cement
- Maintains strength over time
- Provides uniform reinforcement across walls
Why Alkali Resistance Matters
Cement-based plasters are highly alkaline in nature.
- Non-alkali-resistant mesh can deteriorate
- Loss of strength leads to surface cracks
- Alkali-resistant mesh ensures long-term stability
Recommended Mesh Specifications for Plastering
Choosing the right specifications improves performance.
- Mesh weight typically between 110–160 GSM
- Standard mesh opening for smooth plaster finish
- Flexible structure for easy embedding
Applications of Fiber Mesh in Plastering
Fiber mesh is widely used in various plastering situations.
- Internal wall plastering
- External façade plastering
- Crack-prone junctions and joints
- Repair and renovation works
Benefits of Using Fiber Mesh for Plastering
Proper mesh selection delivers multiple advantages.
- Improves crack resistance
- Enhances plaster strength
- Reduces future repair costs
- Improves surface uniformity
Fiber Mesh vs Chicken Wire in Plastering
Fiber mesh offers clear advantages over traditional wire.
- Non-corrosive and lightweight
- Easier and faster installation
- No rust-related plaster damage
Installation Tips for Best Results
Correct installation is critical for effective crack control.
- Embed mesh fully into the plaster layer
- Ensure sufficient overlap between mesh sheets
- Avoid placing mesh too close to the surface
Common Site Mistakes
Avoid these mistakes to ensure long-lasting plaster.
- Using non-alkali-resistant mesh
- Insufficient mesh overlap
- Skipping mesh at joints and corners
- Improper curing after plastering
Frequently Asked Questions (FAQ)
1. Is fiber mesh necessary for plastering?
It is highly recommended to control cracks and improve durability.
2. Which mesh weight is best for plaster?
Mesh between 110–160 GSM is commonly used for plastering.
3. Can fiber mesh be used on external walls?
Yes, alkali-resistant fiberglass mesh is ideal for exterior plaster.
4. Can fiber mesh replace metal lath?
For crack control and surface reinforcement, yes, but not for structural support.
5. Does fiber mesh affect plaster finish?
No, when embedded correctly, it improves finish quality.
Raltro
Raltro is a construction knowledge platform focused on practical site solutions and correct material selection. By explaining which fiber mesh is best for plastering and how to use it correctly, Raltro supports builders and applicators in achieving crack-resistant, high-quality plaster finishes.