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Birla White Activcoat Exterior Primer, 20 Litre Bucket
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Birla White Activcoat Exterior Primer is a white cement-based liquid exterior primer, designed for preparing exterior plaster/putty-finished walls before exterior paint with improved adhesion, enhanced opacity and whiteness, and weather-resistant protection.
Birla White Activcoat Exterior Primer is a premium white cement-based liquid primer formulated specifically for exterior plaster and putty-finished walls, providing superior adhesion and weather resistance for exterior paint applications. The advanced formula boosts opacity and whiteness, ensuring vibrant, long-lasting color while reducing patchiness.
Designed to withstand harsh exterior conditions including rain, humidity, UV exposure, and temperature fluctuations, this primer helps exterior paint perform better and last longer. Ideal for new exterior walls, repainting projects, boundary walls, and building facades. Dilute with clean water as per manufacturer guidance for optimal application.
| Specification | Details |
|---|---|
| Brand | Birla White (UltraTech Cement Limited) |
| Type | White cement-based liquid exterior primer |
| Pack Size | 20 Litre bucket |
| Application | Exterior plaster/putty-finished walls |
| Weather Resistance | Yes, suitable for harsh exterior conditions |
| Dilution | With clean water as per manufacturer guidance |
| Best For | New exterior walls, repainting, boundary walls, facades |
Activcoat Exterior Primer is formulated for outdoor conditions with enhanced weather resistance, UV protection, and durability against rain, humidity, and temperature fluctuations. Interior primer lacks these protective features. Always use exterior-specific primer for outdoor applications.
Yes, exterior primer works on interior walls but is more expensive than interior-specific primers. For cost-effectiveness, use Birla White Activcoat Interior Primer indoors and reserve exterior primer for outdoor applications where weather resistance is essential.
No, Activcoat Exterior Primer works with all putty brands (cement-based and waterproof). While formulated for Birla White putty, it provides excellent adhesion and sealing on any properly prepared exterior putty surface.
Wait for complete drying as per product label instructions (typically 4-6 hours minimum). In humid conditions or thick applications, allow longer drying time. Ensure primer is fully dry before applying exterior paint for optimal adhesion.
Not recommended. Apply primer only when weather is dry and no rain is expected for 24-48 hours. Rain on fresh primer washes it away and causes uneven coverage. Plan exterior painting during dry season for best results.
Common causes: (1) Skipping primer or using low-quality primer, (2) Using interior paint outdoors, (3) Poor surface preparation, (4) Excessive UV exposure without UV-resistant topcoat. Always use quality exterior primer and UV-resistant exterior paint.
Coverage depends on surface condition and dilution ratio. For typical exterior walls, estimate 120-150 sqft per litre. The 20L bucket covers approximately 2400-3000 sqft. Add 10-15% extra for wastage and rough surfaces.

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