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Interior Wall Primer vs Exterior Primer: What’s the Difference

Choosing the right wall primer is essential for long-lasting paint and flawless finishes.

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2 months ago

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After years of moving from one rented apartment to another, Vikrant and Pooja finally moved into their own home. It was a dream they had waited for since their first job together. They had lived with all kinds of walls. Some were patchy and damp, while others had paint that peeled at the corners and refused to stay. This time, they had a choice to decorate their home exactly the way they wanted. From colour palettes to finishes, every decision mattered.
When their painter suggested using a wall primer before painting, they were curious. Wasn’t paint enough? Why an extra coat underneath? That’s when they learned that a primer is not just an extra layer; it is what decides how long your paint lasts and how beautiful your walls look.
Why a wall primer matters
A wall primer paint is the first coat applied before the actual paint. It prepares the surface, covers minor imperfections, and ensures that the paint adheres properly. Without it, walls absorb paint unevenly, making the colour look patchy and dull.
It creates the perfect base, so the paint looks rich, smooth, and even. Primer also helps paint stick better, making your walls last longer between repaints. Whether you are painting the inside or outside of your home, the primer is the foundation of a flawless finish.
Interior wall primer: For smoothness and lasting finish

Inside your home, the walls face a different kind of challenge. They deal with dust, humidity, cooking fumes, and daily wear and tear. An interior wall primer is designed to handle these exact conditions.
The Birla White ActivCoat Interior Primer offers the perfect base for all interior paints. It smoothens the surface and seals porous areas, ensuring your paint spreads evenly and adheres better. With excellent coverage and opacity, it reduces paint consumption while enhancing brightness. Every shade will look more vibrant and last much longer.
Powered by Birla White’s superior white cement base, this primer forms a strong, smooth, and bright undercoat that enhances the true colour of your paint. It ensures long-lasting adhesion, minimizes peeling, and delivers a flawless finish that makes every wall look refined and beautiful for years.
Exterior wall primer: Built for durability
Step outside, and your walls face an entirely different test. The exterior walls face harsh sunlight, rain, dust, and pollution. Ordinary paint alone cannot stand up to such exposure. You need an exterior wall primer that offers strength, protection, and durability.
Formulated with Birla White’s white cement technology, the ActivCoat Exterior Primer offers superior opacity and whiteness, creating a bright, uniform base that enhances the appearance of your topcoat. It bonds strongly with cement plaster, POP, putty, and gypsum surfaces. This primer ensures excellent adhesion and a smooth, consistent finish.
ActivCoat primer not only improves the topcoat’s performance but also reduces overall paint consumption by increasing coverage and brightness. Its high opacity ensures that colours appear richer and more vibrant, even after exposure to sunlight and outdoor conditions.
Interior vs exterior primer: The key differences
While both primers serve the same purpose, preparing your walls, they are built for different needs. The interior wall primer focuses on smoothness, brightness, and easy application. The exterior wall primer focuses on protection, endurance, and weather resistance.
Feature Interior Wall Primer Exterior Wall Primer
Purpose Smooth base and enhanced finish Long-lasting outdoor protection
Finish Smooth and bright Tough and durable
Best for Bedrooms, living rooms, kitchens Exterior walls, balconies, facades
Using the right primer ensures that your wall paint performs the way it’s meant to. Birla White ActivCoat keeps your walls bright inside and strong outside.
What happens when you skip primer
Skipping primer may save you a few hours, but it shortens the life of your paint. Without a primer, walls absorb paint unevenly. The colour fades faster and the surface starts peeling or cracking. You will end up repainting much sooner than expected. A wall primer paint ensures that every layer of paint adheres properly. In short, a primer saves both time and money while giving your walls a professional and long-lasting finish.
For Vikrant and Pooja, the learning was simple; a good paint job starts with the right base. Their interior wall primer gave their rooms a bright and polished finish. Their exterior wall primer protected their home against moisture and sunlight. Today, when they step into their living room, they see walls that look just as fresh as day one. Their dream home finally feels complete. It is strong on the outside and beautiful on the inside. 
For more information, visit www.birlawhite.com

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SAIL Posts Highest-Ever December Sales, FY26 Growth Strong

December volumes jump 37 per cent, momentum continues through April–December.

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4 weeks ago

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January 6, 2026

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Steel Authority of India (SAIL), a Maharatna central public sector enterprise and one of India’s largest steel producers, has recorded its highest-ever sales for the month of December, reflecting strong demand and improved operational performance.
According to provisional data, SAIL clocked sales of 2.1 million tonnes (MT) in December 2025, registering a robust growth of around 37 per cent compared with 1.5 MT sold in December 2024. This marks the company’s best performance for the month of December to date, with strong growth reported across product categories and sales channels, alongside a significant reduction in inventory levels.
The strong monthly performance was driven by a sharp focus on timely customer deliveries and enhanced market engagement. SAIL has also stepped up its branding and outreach initiatives in recent months, contributing to improved visibility and stronger customer connect in both retail and institutional segments.
The December showing helped SAIL sustain its growth momentum during the current financial year. Cumulative sales for the April–December 2025 period stood at 14.7 MT (provisional), reflecting a growth of about 17 per cent compared with 12.6 MT recorded during the corresponding period of the previous year.
In addition to solid performance in the domestic market, SAIL’s export volumes have also witnessed a significant increase, highlighting the company’s expanding global footprint and competitiveness in international markets. The improved export performance comes amid volatile global steel market conditions, underscoring SAIL’s ability to adapt and capitalise on emerging opportunities.
The sustained improvement in sales volumes reflects SAIL’s strengthened market presence, customer-centric approach and operational efficiencies. The record-breaking achievements across domestic and overseas markets reinforce the company’s position among India’s leading steel producers and are expected to further enhance its standing among major global steel players in the coming years.

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Ministry of Steel Invites Media Partners for Bharat Steel 2026

Global steel conference to be held in New Delhi in April 2026.

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4 weeks ago

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January 6, 2026

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The Ministry of Steel, Government of India, has invited media organisations to partner with Bharat Steel 2026, an international conference-cum-exhibition scheduled to be held on April 16–17, 2026, at Bharat Mandapam in New Delhi. Envisioned as a premier global platform, the event will bring together policymakers, industry leaders, investors, technology providers and international stakeholders to discuss the future of the steel sector in India and worldwide.
Bharat Steel 2026 aims to showcase India’s steel vision, policy roadmap and investment opportunities, while fostering structured engagement between the Government of India and the global steel ecosystem. The conference is expected to see high-level participation from senior government leadership, key central ministries, state governments, chief executives of leading Indian and international steel and mining companies, global technology players, financial institutions, trade bodies and international delegations.
The two-day event is likely to feature key policy deliberations, industry announcements, business collaborations and knowledge-sharing sessions, with a strong focus on sustainability, innovation and long-term growth of the steel industry. Given its scale and international participation, Bharat Steel 2026 is expected to attract significant national and global attention.
In this context, the Ministry of Steel proposes to collaborate with leading media organisations to ensure wide-ranging and impactful coverage of the conference. Media partners are being invited across categories, including digital media, print media (magazines and newspapers), and electronic and television platforms.
The tentative scope of collaboration includes digital promotions through dedicated web banners and social media posts, publication of advertisements and editorial content in print, and broadcast of promotional material, interviews, panel discussions and event highlights on electronic and television channels. Coverage is envisaged across pre-event, event and post-event phases to ensure sustained visibility.
Partnering media organisations will gain enhanced visibility, access to senior government and industry leaders, exclusive content opportunities, press briefings and on-ground coverage during the event, enabling close engagement with one of the most significant government-led platforms in the steel sector.

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India Imposes Three-Year Tariff on Select Steel Imports

New duties aim to curb surge of low-priced steel from China

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1 month ago

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December 31, 2025

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India has recently imposed import tariffs for a three-year period on select steel products, targeting a sharp rise in low-priced shipments from China that regulators say are hurting domestic producers.

The tariff has been set at 12 per cent in the first year, easing to 11.5 per cent in the second year and further tapering to 11 per cent in the third year. The measure follows concerns flagged by trade authorities over increasing imports at prices below prevailing domestic levels.

As the world’s second-largest crude steel producer, India has been grappling with sustained inflows of cheaper steel, particularly from China, raising anti-dumping concerns and putting pressure on local steelmakers’ margins and capacity utilisation.

The move is expected to provide near-term relief to domestic producers while allowing a gradual adjustment as duties are phased down over the three-year period.

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