Achieving a pristine concrete finish is no longer a multi-step chore. When surface imperfections like gravel clusters or pour lines interrupt an otherwise solid pour, the need for a seamless, paint-ready surface is immediate. Planitop Fine Finish delivers that uniform, ultra-fine aesthetic in a single application, allowing for a high-quality finish without the need for additional bonding promoters.

Why this product exists

Planitop Fine Finish is an ultra fine-textured, cementitious skimming mortar specifically engineered for concrete surfaces. Developed by MAPEI, it uses a unique blend of binders, selected aggregates, and polymers to create a rapid-hardening, single-component compound. This formulation allows for feather-edge skimming up to 3 mm thick without needing a bonding promoter, streamlining preparation for subsequent coatings. Unlike coarser patching compounds, its ultra-fine aggregate (0.2 mm) ensures a smooth finish, ready for painting or simply to enhance the concrete's natural appearance.

The numbers that matter

• Maximum aggregate size: 0.2 mm. This ultra-fine particle size is crucial. It’s what allows for the feather-edge finish and the smooth surface quality needed for painting, eliminating the visible texture that coarser renders leave behind.
• Maximum application thickness: 3 mm. This range is engineered for smoothing defects and achieving a uniform surface, not for structural build-up. It confirms its role as a finishing layer.
• Pot life: approximately 45 minutes. This provides a comfortable working window for mixing and application, particularly when covering larger surfaces, before the material begins to set.
• Adhesion to concrete: ≥1 MPa after 28 days (EN 1542). This ensures the skim coat forms a durable bond with the concrete, resisting delamination even under thermal cycling, essential for long-term performance in exposed conditions.

What it's like to use

This mortar mixes easily with water to a thixotropic, trowellable consistency, making it simple to spread with a rubber or metal spreader. Mechanical mixing at low speed is recommended to ensure a lump-free blend and prevent air entrainment. The approximately 45-minute pot life allows ample time to apply and then finish the surface with a damp sponge float a few minutes later, achieving the desired smooth finish. For powdery substrates that lack cohesion after cleaning, a MAPEI primer may be required to consolidate the surface before application.

During curing, especially in hot or windy conditions, keep the surface moist by spraying water as it begins to set. This prevents rapid drying and plastic shrinkage cracks, critical for the final finish integrity. Clean tools with water immediately after use, before the material hardens.

Where this product excels

• Smoothing concrete walls before painting: This product provides the uniform, ultra-fine surface essential for a flawless paint finish. It conceals minor imperfections, ensuring paint does not highlight surface irregularities.
• Levelling surface defects in cast concrete: For issues like gravel clusters, pour lines, or other surface inconsistencies, Planitop Fine Finish offers a monolithic appearance, creating a consistent substrate for subsequent treatments.
• Skimming precast concrete elements: Whether for buffer panels, beams, or pillars, it delivers a high-quality, durable finish that is ready for installation or further decorative treatments.

Choose this when

• When you need an ultra fine, smooth finish on concrete surfaces, ready for painting or left exposed.
• When levelling minor surface defects on cast or precast concrete is the primary job.
• When a single-component, rapid-hardening product is preferred for efficiency, without requiring a bonding promoter for thin applications.
• When working in temperatures between +5°C and +35°C.

Don't use this when

• Not for: Structural repair. This product is a finishing mortar, not designed for load-bearing or structural concrete repairs.
• Not for: Hydraulic structures or surfaces subjected to significant abrasion. For these applications, use Mapefinish or Mapefinish HD.
• Not for: Substrates with rising damp, or if applied in layers thicker than 3 mm. Adhere to the specified thickness and substrate moisture conditions for optimal performance.
• Not for: Application during strong winds, direct sunlight, or if temperatures are below +5°C. These conditions compromise proper curing and final product performance.