How to Tell if Your Walls Need Patching Before Painting

There’s a particular kind of hope that comes with deciding to repaint a room. You can already picture it: the fresh colour, the lifted feeling, the way the space will finally look the way you imagined it. At Dunbar Painting, we see that excitement in homeowners every day, and we want to help protect it. One of the most common things that gets between a homeowner and a result they love is painting over walls that weren’t quite ready. Knowing how to tell if your walls need patching before painting means you go into the project with clear eyes and come out the other side genuinely proud of every room.

Why Wall Prep Matters More Than Most People Expect

Fresh paint doesn’t hide imperfections; it highlights them. This is especially true under certain lighting conditions and with higher-sheen finishes like satin or semi-gloss. What looked like a faint dent in dim light becomes unmistakably obvious once a crisp new colour is behind it. Taking the time to assess your walls before painting is what separates a result that looks truly transformed from one that just looks repainted.

Find out how different paint finishes impact your walls.

Signs Your Walls Need Patching

Nail Holes and Small Surface Damage

These are the most common culprits, and the good news is they’re completely normal. Every home accumulates them from hanging artwork, bumping furniture, and general everyday living. Anything larger than a small nail hole will read through paint. Walk your walls in good light and look for:

• Nail holes from removed frames or shelving
• Small dents or gouges from furniture contact
• Chips along door frames or baseboards
• Screw anchors that were pulled and left open

These are straightforward to address during prep, but skipping them means they’ll show up in your finished walls.

Nail Pops

Nail pops are those small circular bumps where a drywall screw or nail has pushed back through the surface. They’re particularly common in homes that have been through several seasons of Vancouver’s humidity cycles, since wood framing naturally expands, contracts, and settles over time. They’re not a structural concern, but they are very visible once painted, and they require more than just spackling over the bump to fix properly.

Cracks

Not all cracks are equal, and knowing the difference matters:

• Hairline cracks around door frames and window casings are typically the result of normal house settling and seasonal movement. These need to be filled and feathered before painting.
• Wider cracks (roughly 1/8 inch or more) or cracks that have reappeared after a previous repair deserve a closer look. Recurring cracks may indicate ongoing movement and should be assessed before you invest in a fresh paint job over them.
• Cracks in plaster walls, which are common in Vancouver’s older and heritage homes, often behave differently than drywall cracks and benefit from a professional eye during the walkthrough.

Previous Patch Jobs That Didn’t Hold

A poorly done patch from a previous paint project can be just as noticeable as the original damage. Signs to look for include:

• Slightly sunken areas where compound has shrunk
• Patches with a different texture than the surrounding wall
• Smooth spots in a textured wall, or rough spots in a smooth one

Texture matching is one of those things that sounds simple but makes an enormous difference in how cohesive the finished surface looks. When we prep walls as part of our interior painting process, priming over patched drywall is a standard part of the sequence, not an afterthought.

Water Stains and Discolouration

Yellowing or brownish staining on your walls is a signal to stop and investigate before reaching for a paintbrush. Standard paint will not block water stains; they will bleed through, often within weeks. More importantly, staining can indicate a moisture issue that needs to be resolved at the source before any surface work happens. If the drywall itself feels soft or is visibly bubbling, it needs more than a patch.

Where moisture exposure has occurred, mildew-resistant primer is part of the right solution, which is something we factor into our process in bathrooms and other affected areas.

Learn some simple tips for painting high-moisture rooms in your home.

The Hands-On Assessment

Before calling anyone, do your own walkthrough. Two techniques reveal a lot:

1. The lighting test: hold a flashlight nearly parallel to the wall surface and move it slowly across the wall. This low-angle light casts shadows that reveal dents, ridges, and texture inconsistencies that flat overhead lighting completely misses.
2. The touch test: run your palm flat along the wall. If you can feel a ridge, bump, or depression, it will show through paint. Your hand is more sensitive than you might expect, and paint won’t fill what you can feel.

Do this in every room you’re planning to paint, including near windows where natural light will do the same work your flashlight does and where visitors will naturally look.

What This Means for Your Project

Most walls need some level of patching before painting. That’s not a problem. It’s just the reality of a lived-in home, and it’s something we genuinely enjoy getting right. The goal is always a result you’ll fall in love with, and that starts with surfaces that are properly prepared before colour ever goes on.

If you’re planning an interior paint project and want a set of experienced eyes on your walls, we’d love to walk through the space with you. Give us a call at 604-788-3382. We’ll talk through what we’re seeing, what needs attention, and what your home is really capable of looking like.