Birla White ActivCoat Exterior Primer, 20L

• Manufacturer: Birla White
• Model: ActivCoat Exterior Primer, White Cement-Based Liquid Primer
• Colour: White
• Coverage Rate: 110–130 sq ft per litre per coat (ideal smooth surfaces)
• Dilution: 1:1 with clean water by volume (1 part primer to 1 part water)
• Surface Dry Time: Approx. 30 minutes
• Recoat Time: 4–6 hours
• Pack Size: 20 Litre bucket
• Application Areas: Exterior plaster and putty-finished walls

Birla White ActivCoat Exterior Primer is a white cement-based liquid primer for exterior plaster and putty-finished walls. It improves adhesion, boosts opacity and whiteness, and reduces patchiness, so exterior paint looks vibrant and lasts longer. It is built to stand up to rain, humidity, UV exposure and temperature changes, and needs no pre-wetting of the wall. The 20 litre bucket suits large residential and commercial exteriors.

Technical Specifications

Recommended Applications

Application Guidelines

Why Buy from HomeRun?

1) What makes ActivCoat Exterior Primer different from interior primer?

It is formulated for outdoor conditions, with weather resistance and durability against rain, humidity, UV and temperature changes. An interior primer lacks these protective features, so always use an exterior-specific primer outdoors.

2) Do I need to use Birla White putty with ActivCoat Exterior Primer?

No. It works with all putty brands, cement-based and waterproof. It is formulated for Birla White putty but gives good adhesion and sealing on any properly prepared exterior putty surface.

3) How much water should I add, and how long does the mixed primer last?

Dilute 1:1 by volume with clean water — 1 part primer to 1 part water. Once mixed with water, use the primer within 24 hours, so mix only the quantity you need for the day.

4) How long should I wait before painting, and is there a deadline?

The primer is surface dry in about 30 minutes. Wait 4–6 hours before applying the topcoat, longer in humid conditions or thick applications. Apply the final exterior finishing paint within 30 days of the primer application.

5) Can I apply exterior primer in the rainy season?

Not recommended. Apply it only when the weather is dry and no rain is expected for 24–48 hours. Rain on fresh primer washes it away and causes uneven coverage.

6) How much primer do I need for my exterior project?

Coverage is 110–130 sq ft per litre per coat on ideal smooth surfaces, so the 20 litre bucket covers roughly 2,200–2,600 sq ft per coat. Rough or textured walls take more, so add 10–15% extra for wastage.

1. Return within 24 hours of delivery for:
   • Damaged or defective product
   • Wrong or missing item
2. Product cannot be returned once opened or used
3. Refer to Refund Policy for complete details