Plastering Problems and Their Solutions: A Comprehensive Guide
Plastering is a critical step in construction that not only adds a smooth finish to the walls but also provides protection against weathering, moisture, and other environmental factors. However, despite using the best techniques, plastering can often face challenges that affect the quality, durability, and appearance of the final product. These problems can arise due to poor workmanship, incorrect material choices, or environmental factors. One of the most crucial factors that determine the success of plastering is the cement for plastering. This blog will focus on common plastering problems and their solutions, with an emphasis on how using the best cement for plastering, such as Wonder Cement, can mitigate these issues and ensure long-lasting, flawless walls.
1. Problem: Cracking of Plaster
Cracks in plaster are one of the most common problems seen in construction. These cracks can occur either immediately after the plaster dries or over time due to various reasons such as improper cement mix, temperature fluctuations, or poor workmanship.
Causes:
Improper Cement Mix: Using an incorrect water-cement ratio can weaken the plaster, making it more prone to cracking.
Shrinkage: As plaster dries, it shrinks. If not applied correctly, shrinkage can lead to cracks, particularly if the plaster layer is too thick.
Thermal Movement: Variations in temperature cause expansion and contraction of materials. Poor-quality cement or an improper mix can make the plaster more susceptible to these movements.
Solution:
Use the Best Cement for Plastering: High-quality plastering cement, like Wonder Cement, provides the perfect balance of strength and flexibility, minimising shrinkage and cracking. Wonder Cement is manufactured with advanced technology that ensures superior bonding, preventing cracks that arise from poor adhesion or thermal movement.
Correct Mix Ratios: Always use the correct water-cement ratio as recommended by the manufacturer. Too much water will weaken the mix, while too little will reduce workability.
Apply in Layers: If a thick plaster layer is needed, apply it in multiple thinner coats to allow proper drying and reduce shrinkage cracks.
2. Problem: Plaster Delamination or Peeling
Delamination occurs when the plaster does not bond well to the underlying surface, causing it to peel away over time. This not only ruins the aesthetics of the wall but also compromises its protective function.
Causes:
Poor Surface Preparation: If the surface is not properly cleaned or dampened, the plaster will not adhere properly.
Use of Low-Quality Cement: Poor-quality cement often leads to weak bonding, which results in delamination.
Solution:
Surface Preparation: Before applying plaster, ensure the surface is free from dust, dirt, and oil. Dampen the surface lightly to improve bonding between the plaster and the wall.
Choose the Best Cement for Plastering: Cement like Wonder Cement, which is specifically designed for plastering, offers exceptional bonding strength. Its superior adhesion properties help the plaster stick firmly to the surface, reducing the risk of delamination or peeling.
Proper Application Techniques: Use a good bonding agent or primer if needed, especially when plastering on smooth surfaces like concrete or old walls.
3. Problem: Efflorescence on Plastered Walls
Efflorescence is the white powdery substance that appears on the surface of walls after plastering. It is caused by salts present in the cement, bricks, or mortar being dissolved by water and then brought to the surface as the moisture evaporates.
Causes:
High Salt Content in Cement or Sand: Low-quality cement can have high salt content, leading to efflorescence.
Excessive Moisture: Poor waterproofing and improper curing can introduce moisture into the plaster, leading to salt deposition.
Solution:
Use Salt-Free Cement for Plastering: Using high-quality, salt-free cement like Wonder Cement can significantly reduce the occurrence of efflorescence. Our cement is manufactured with advanced quality control processes to ensure it is free from harmful salts.
Proper Curing: Curing is essential for preventing efflorescence. Ensure that the plaster is cured properly for at least 7 to 10 days to allow complete hydration of the cement.
Waterproofing Measures: Proper waterproofing of the building structure, especially in foundations and external walls, can prevent excessive moisture from causing efflorescence.
4. Problem: Uneven Plastering Finish
An uneven finish not only affects the aesthetics but also impacts the wall’s durability. This problem is often caused by poor-quality materials or improper plastering techniques.
Causes:
Poor Workmanship: Inconsistent application of plaster leads to an uneven surface, with some areas being too thick and others too thin.
Low-Quality Cement: Using substandard cement can result in uneven texture and poor adhesion, making the plaster finish rough or wavy.
Solution:
Use the Best Cement for Plastering: Wonder Cement ensures smooth consistency and workability, making it easy to apply an even plaster layer. It is formulated to produce a fine, uniform texture that allows for flawless finishes.
Proper Techniques: Apply the plaster in even strokes, using appropriate tools like trowels and floats to level the surface. Use corner and edge tools to achieve smooth transitions.
Quality Control: Monitor the thickness of the plaster to ensure uniform application across the surface.
5. Problem: Blistering and Bubbling in Plaster
Blistering occurs when pockets of air or water get trapped under the plaster, creating raised areas on the surface. Over time, these blisters can pop, leaving unsightly holes or peeling plaster.
Causes:
Air Entrapment: Air trapped between the plaster and the wall during application can cause blistering.
Inadequate Curing: Lack of proper curing can lead to trapped moisture, which results in bubbles forming under the surface.
Solution:
Use High-Quality Cement for Plastering: The use of Wonder Cement for plastering ensures a smooth and uniform application, reducing the chances of air pockets and blistering. Its superior hydration properties allow for proper curing, preventing moisture from getting trapped in the plaster.
Proper Application Techniques: Avoid overworking the plaster, as this can trap air. Use a mechanical vibrator to remove air bubbles from the mix before application.
Adequate Curing: Ensure that the plaster is cured correctly to allow any trapped moisture to escape. Start curing after 24 hours and continue for at least 7 days.
6. Problem: Plaster Deterioration Due to Moisture
Moisture can seep into plastered walls over time, causing the plaster to weaken and deteriorate. This can lead to cracking, peeling, and even structural damage.
Causes:
Poor Waterproofing: Inadequate waterproofing in external walls or areas exposed to water (such as bathrooms and kitchens) can allow moisture to seep into the plaster.
Low-Quality Cement: Substandard cement that lacks water-resistant properties can deteriorate quickly when exposed to moisture.
Solution:
Waterproofing Additives: Add waterproofing compounds to the plaster mix to protect against moisture.
Use Moisture-Resistant Cement: Wonder Cement’s plastering cement is designed to offer superior resistance to moisture, making it ideal for damp areas like basements, bathrooms, and exterior walls.
Regular Maintenance: Inspect and repair any cracks or damage in the plaster regularly to prevent water from seeping in.
7. Conclusion
Plastering problems like cracking, peeling, efflorescence, blistering, and uneven finishes are often the result of poor material choices or improper techniques. By using the best cement for plastering, such as Wonder Cement, you can eliminate most of these issues from the start. Wonder Cement’s high-quality plastering cement ensures smooth application, excellent bonding, and long-term durability, helping you achieve flawless walls that stand the test of time. Whether you're working on interior or exterior walls, investing in premium-quality cement for plastering is the first step to ensuring a professional and lasting finish.