The secret to a flawless paint finish is not just in the colour or brand of paint. It is in how you prepare your walls. One of the most common questions homeowners ask is: Which comes first, putty or primer? The right answer is primer first, then putty, and primer again. These 3 steps can make all the difference.

In this guide, we will walk you through each step, explain why primer matters, and show you how to use it correctly to get vibrant and long-lasting walls. Whether it is for interior wall primer or exterior wall primer, following these steps ensures your walls look perfect every time.

Why is Primer Important Before Painting?

If you are wondering: What does primer do for painting? The answer is that the primer acts as a base coat that improves adhesion between the wall and paint. It covers minor surface imperfections, enhances paint coverage, and ensures the colour looks uniform and bright. Birla White ActivCoat Primer is a white cement-based primer that offers better opacity and whiteness than regular acrylic primers. This means your primer paint layer ensures the true tone of your topcoat comes through beautifully.

Step-by-Step Guide: Perfect Wall Preparation

Step 1: Surface Preparation

A clean and smooth surface is the foundation of good painting.

• Sand the wall with emery paper no. 180.
• Wipe off dust and ensure the surface is clean and dry.
• Remove any loosely adhered material, dirt, or grease.

This step ensures the primer on wall adheres properly, whether for primer outdoor or indoor use.

Step 2: First Coat of Primer

Before applying putty, the first coat of primer ensures better bonding.

• Mix Birla White ActivCoat Primer with water in a 1:1 ratio.
• Apply a single coat using a brush or roller.
• Allow it to dry for 3–4 hours.

Using a primer for painting before putty improves the surface grip and stops excessive absorption of moisture from putty. This gives it a better finish.

Step 3: Putty Application

Once the primer dries, it is time to smoothen the surface.

• Apply two coats of Birla White Wall Putty.
• Let each coat dry for 10–12 hours.
• Sand the surface with emery paper no. 320 for a smooth finish.

This step ensures your walls are even and ready to reflect the colour vibrantly.

Step 4: Second Coat of Primer

After putty, a second primer layer acts as a sealant and prepares the wall for painting.

• Apply the second coat of Birla White ActivCoat Primer.
• Let it dry for 3–4 hours.
• Sand lightly with emery paper no. 320 if needed.

This is a crucial step before applying the topcoat. A primer with paint ensures longer life, better finish, and enhanced waterproofing performance.

Frequently Asked Questions (FAQs)

Which comes first, putty or primer?
Primer comes first, followed by putty, then another coat of primer.

Can I paint directly without primer (interior application)?
It is not recommended. Skipping primer can cause uneven absorption, patchy colour, and reduced paint durability.

What is primer for waterproofing?

A good quality primer acts as a protective base layer, helping resist moisture seepage and increasing the lifespan of the paint.

Do’s and Don’ts of Primer Application

Do’s:

• Ensure a clean, dust-free surface before application.
• Stir the primer well before use.
• Store in a cool and dry place.

Don’ts:

• Avoid applying when the temperature is below 10°C or expected to drop within 4 hours.
• Don’t over-thin or over-extend the brush.

• Don’t use stainers or other colourants with primer.

   

Also Read: Interior vs. Exterior Primers: Understanding the Key Differences