Why Painters Recommend Primer Before Painting
When clients ask us, “Do I really need primer before painting?” the honest answer is: it depends. Primer isn’t always required—but when it is, skipping it can cost you in the long run. As professional painters in Kitchener-Waterloo, we’ve seen both sides: jobs that hold up beautifully for years, and rushed DIY jobs that peel within months or don’t properly cover. Here’s the lowdown on when primer is a must—and when you can safely go without it.
🎯 What Is Primer and What Does It Do?
Primer is essentially the foundation coat that prepares surfaces for paint. It helps paint adhere better, evens out porous or patched surfaces, and prevents stains or dark colours from bleeding through. Think of it as insurance for your paint job—especially on surfaces that have never been painted before or are undergoing a major colour change.
✅ When Primer Is Absolutely Needed
Here are the scenarios where primer is non-negotiable:
- New drywall or bare wood – These surfaces soak up paint like a sponge. Primer seals them so your finish coat applies evenly and lasts longer.
- Stains or water damage – Primer locks in smoke, water stains, and discoloration that would otherwise bleed through your paint.
- Going from dark to light colours – If you’re covering navy blue walls with white paint, primer helps you avoid doing 4+ coats.
- Glossy or oil-based surfaces – Regular latex paint won’t adhere well to high-gloss or oil-based finishes without a bonding primer.
- Patching or repairs – Primed patches blend better with surrounding areas and won’t flash (look dull or different).
🚫 When You Might Be Able to Skip Primer
Primer isn’t always necessary—especially when:
- You’re repainting a well-prepped surface in a similar colour.
- Using modern paint-and-primer-in-one products on low-traffic interior walls.
- The surface is in excellent condition and already has a solid, matte base coat.
Even then, a test patch is a smart move—just to see how it covers and adheres before committing.
🧠 Pro Tip from the JJMFG Crew:
If you’re ever unsure whether to prime, ask yourself: Is the surface porous, stained, glossy, patched, or drastically different in colour? If yes, prime it. Otherwise, a high-quality paint might be enough. Check out some primers from Dulux!
🛠️ Our Professional Process
At JJMFG Contracting, we inspect every surface first and use primer only when it adds value to the finished product. We’re not about cutting corners—but we are about working efficiently and cost-effectively. That means knowing when primer will help—and when it’s just overkill.
🏡 Book a Quote in Kitchener-Waterloo
If you’re planning a painting project and want it done right the first time, we’re here to help. Whether it’s walls, cabinets, or exterior surfaces—we know the prep work that makes paint last.
Contact us for a free quote today or check out our recent work on Instagram.
