Microcement has gained significant traction across the construction and interior design sectors due to its seamless finish, aesthetic versatility, and compatibility with various surfaces. However, like any building material, microcement has limitations that industry professionals should understand before recommending or specifying it for a project.
This blog provides a clear, balanced, and practical breakdown of the disadvantages of microcement, aimed at manufacturers, contractors, designers, and specifiers. Understanding these drawbacks allows for better decision-making, improved risk management, and ultimately more successful project outcomes.
What Is Microcement?
Before diving into the limitations, it’s important to define the material. Microcement is a cement-based coating mixed with polymers, pigments, and additives. It’s applied in thin layers (typically 2–3 mm) over surfaces like concrete, plasterboard, tiles, or wood to create a continuous, grout-free finish. It’s widely used in contemporary design for floors, walls, bathrooms, and even furniture.
The Main Disadvantages of Microcement
1. Susceptibility to Cracking Without Proper Installation
One of the most commonly cited concerns with microcement is surface cracking. While microcement is engineered to be more flexible than traditional cement-based coatings, it is still rigid and can crack if:
- The substrate is unstable or improperly prepared.
- Movement joints are not respected.
- There is excessive vibration, structural movement, or thermal expansion.
Professional Tip: Always assess substrate condition and ensure crack isolation membranes are used where necessary. Expansion joints should be incorporated in larger areas.
2. Requires Highly Skilled Application
Unlike paint or vinyl, microcement is not a DIY-friendly product. The application involves multiple steps—priming, applying base coats, smoothing, sanding, sealing—and each layer requires technical precision.
- Inconsistent trowel pressure or timing can lead to visible trowel marks, discoloration, or uneven texture.
- Poor sealing can result in moisture ingress or staining.
Industry Insight: Labour should be performed by trained microcement applicators. Misapplication is one of the leading causes of client dissatisfaction and product failure.
3. Time-Intensive Application and Curing
Although microcement is applied in thin layers, it is a labour- and time-intensive process. Each layer must dry before the next is applied, and curing times vary based on environmental conditions.
- A typical project may take 3–5 days for a medium-sized room, which may be longer than conventional alternatives like tiles or vinyl.
- Post-application sealing requires additional drying time before the surface is ready for use.
Practical Advice: Build application and curing time into project schedules to avoid delays, especially in commercial builds where downtime can be costly.
4. Vulnerability to Scratches and Stains
Despite its sealed surface, microcement is still softer than ceramic tile or natural stone. This means:
- It can be scratched by abrasive materials, especially in high-traffic areas.
- Acidic or aggressive cleaners can degrade the sealer, making the surface vulnerable to staining.
Mitigation Strategy: Specify high-quality sealers with stain and abrasion resistance, and educate clients on appropriate cleaning protocols.
5. Higher Initial Cost Compared to Traditional Finishes
While microcement can reduce long-term maintenance costs, the upfront cost per square metre is higher than common materials like tiles or vinyl.
- Costs reflect the skilled labour and multi-step process involved.
- Material prices also vary based on pigmentation, finish, and system quality.
Budgeting Tip: Use microcement strategically—for high-impact areas or feature zones—rather than across every surface, especially when managing costs in larger-scale commercial projects.
6. Moisture Sensitivity in Poorly Sealed Areas
Microcement is water-resistant but not waterproof. If the final sealant layer is compromised or applied improperly:
- Water can penetrate and cause staining, delamination, or mildew growth underneath.
- Wet areas like showers and wet rooms require meticulous sealing and membrane preparation.
Specification Tip: Always include a waterproofing system underneath microcement in high-moisture areas. Use certified sealers designed for bathrooms and kitchens.
Summary Table: Microcement Drawbacks at a Glance
| Disadvantage | Description | Mitigation/Advice |
|---|---|---|
| Cracking Risk | Occurs if substrate is unstable or joints are ignored | Use proper substrate prep and crack isolation systems |
| Skilled Labour Required | Poor application affects aesthetics and performance | Hire trained, experienced applicators |
| Time-Intensive | Multi-layer process with drying/curing time | Factor into project timelines |
| Prone to Scratches and Stains | Softer than tiles; vulnerable to cleaners and abrasive wear | Use high-grade sealers and train end users on maintenance |
| Higher Initial Cost | Labour-intensive and requires premium materials | Use selectively in key visual or design areas |
| Moisture Sensitivity | Needs proper sealing to prevent water damage | Always use waterproofing systems and top-quality sealers |
Final Thoughts: When Microcement Is the Right Choice
While microcement has limitations, most of its disadvantages stem from improper application or misaligned expectations. When installed correctly by qualified professionals, microcement offers a highly aesthetic, durable, and contemporary finish that performs well in both residential and commercial settings.
For manufacturers and industry professionals, education is key. Ensure that specifiers, installers, and clients understand where microcement excels—and where extra care is needed—to maximise its benefits and minimise risk.