Details
Primo Base Coat 380 – High Performance Floor Screed Solution
Base Coat 380 is a high-quality cement-based plaster formulated with selected graded fillers and special additives. It is designed as a base leveling coat for internal and external walls and ceilings before the application of skim coats or decorative finishes. The product provides excellent adhesion to concrete and masonry substrates, creating a durable and smooth surface.
Features
- Water resistant
- Weather resistant
- High bond strength
- Strong & durable
Advantages
- Pre-packed, consistent quality, easy to mix and apply.
- Excellent adhesion.
- Good workability, water retentivity, and good bonding strength, promoting surface improvement prior to top coat.
- High compressive strength and durability.
- Reduced cracking and shrinkage.
- Cost-effective, time-saving, suitable for thin to moderate thickness applications.
Uses
- As a base leveling coat on concrete, blockwork, lightweight blocks, or brick walls.
- For internal and external plastering prior to skim coat or decorative finishing.
- Ideal for repairing uneven surfaces and filling surface imperfections.
- Should not be used on painted surfaces.
Technical Data
| Appearance | Grey Powder |
| Binder | Portland cement & selected additives |
| Filler | Graded silica sand and calcium carbonate powder |
| Water/Powder Ratio | 0.25 - 0.27 |
| Pot Life | Approx. 2 hours |
| Thickness per Coat | 5-15mm |
| Compressive Strength (28 Days) | ≥ 10 MPa |
| Adhesion Strength | ≥ 3 MPa |
| Dry Bulk Density | 1400-1500 kg/m³ |
| Capillary Water Absorption | ≤ 1 kg/m.min² 0.5 |
| Coverage | Approx. 0.70 m² per kg (1mm thick) |
Application & Usage
- Surface Preparation: Substrate must be clean, sound, and free from dust, oil, grease, and loose particles. Pre-wet to SSD (saturated surface dry) condition. Use Primo Render for patching surface defects >5mm.
- Mixing: Use a clean container and potable water. Add Base Coat 380 into water while mixing with a mechanical paddle mixer at low speed. Mix for 3–5 minutes until smooth and lump-free. Allow to rest 2 minutes, then remix before application.
- Application: Apply using a steel trowel or suitable spray machine. For thickness >15mm, apply in two layers with light keying between coats. Finish with straight edge or trowel. Allow sufficient curing before skim coat or decorative finishes.
- Packaging: 40kg moisture-resistant laminated paper bag.
- Storage: Store in cool, dry place on pallets, away from direct sunlight and moisture. Shelf life: 6–9 months (unopened bag).
- Safety & Health: Contains cement. Avoid contact with skin and eyes; wear gloves, mask, and goggles. Wash immediately if contact occurs. Avoid inhalation of dust. Ensure adequate ventilation. Keep out of reach of children. Refer to MSDS.
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