Painting Over Mold? The Truth About ‘Quick Fixes’

Mold is unsightly, and I understand that nobody wants to stare at a dark, blotchy patch on their bathroom ceiling or basement wall. Sure, a quick coat of paint seems like an easy way to make the problem disappear. But here’s the thing about “quick fixes”: they’re rarely fixes at all. Especially when it comes to mold.

Painting over mold is one of those home myths that just won’t die. It looks better for a little while, sure. But underneath that shiny new layer of paint, the problem is still there and it’s growing, spreading, and getting ready to bubble its way back to the surface.

Let’s talk about why this happens, what it means for your home, and the right way to deal with it (so you’re not repainting again next month).

Why Paint and Mold Don’t Mix

Mold is a living organism, not a stain. It feeds on organic material like drywall paper, wood, dust, and anything else it can digest. It also thrives in damp, humid environments. When you paint over mold, you’re basically trapping that living organism under a layer of latex and giving it a warm, dark place to multiply.

Even paints labeled as “mold-resistant” don’t kill existing mold; they simply make it harder for new spores to take hold. Think of them as preventive, not curative. Once mold has already started to grow, those spores will continue doing what they do best - eating, spreading, and eventually breaking through the surface again.

That’s why the dark spots you “covered up” always seem to come back, no matter how many coats you roll on. You didn’t solve the problem. You just hid it temporarily.

The Real Risk Isn’t Just Cosmetic

Mold isn’t just an eyesore. Prolonged exposure to mold spores can aggravate allergies, trigger asthma, and cause respiratory irritation, especially in kids, older adults, and anyone with a compromised immune system. Even if your home’s air feels fine, hidden mold can create ongoing air quality problems that only get worse over time. And if it spreads into insulation, behind drywall, or under flooring, you’re looking at a much bigger repair bill later.

So no, it’s not “just a little spot.” It’s a sign of a deeper moisture issue that needs your attention.

How to Fix It the Right Way

Before you paint, you have to address two things: the mold itself and the source of the moisture that caused it. Here’s the right order of operations:

1. Find the moisture source. Is there a roof leak, poor ventilation, a plumbing issue, or a condensation problem? Fix that first. Otherwise, the mold will just come back.

2. Kill the mold. For small areas (less than 10 square feet), you can usually handle it yourself. Wear gloves, a mask, and goggles, and use a cleaner designed to kill mold, not just bleach. Bleach can discolor mold, making it look gone when it isn’t.

3. Remove damaged material. If the mold has eaten into drywall, insulation, or wood, those materials need to go. Scraping and cleaning won’t cut it if the spores have taken root inside porous surfaces.

4. Dry the area completely. Fans and dehumidifiers are your friends. Moisture left behind is an open invitation for mold to start over.

5. Seal and repaint. Once the area is clean, dry, and sound, use a high-quality primer made for problem areas before painting. Products designed for bathrooms or basements help prevent future issues.

Prevent, Don’t Patch

Once you’ve done the hard work, prevention is your best defense. That means improving ventilation, keeping humidity below 50%, and addressing leaks immediately. It also means thinking long-term. Proper insulation, vapor barriers, and routine roof and gutter maintenance all play a role in keeping moisture (and mold) out.

Final Thoughts

Painting over mold might make things look better for a while, but it’s the home-improvement equivalent of spraying air freshener in a garbage can. The only real solution is to stop the problem at the source.

So, before you pick up that roller, step back, figure out what’s causing the moisture, and deal with the mold properly. It’ll save you time, money, and maybe even your lungs.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.

Put a Roof Check on Your Fall Maintenance List

When it comes to protecting your home, your roof is the unsung hero. It shields you from rain, wind, snow, and sun every single day. Yet most homeowners don’t think twice about it until a problem pops up. By then, it’s usually more than just a minor inconvenience. That’s why fall is the perfect time to give your roof some attention. Taking a little time now can save you a lot of stress and money once winter sets in.

Take a Quick Look

Start simple. Stand back in your yard and scan your roof from the ground. Do the shingles look flat and uniform? Or do you see sagging areas, dark streaks, or patches that just don’t look right? Those could be early warning signs of bigger problems.

Don’t forget the inside of your home either. Water stains on the ceiling, peeling paint, or small cracks in your walls can all signal that moisture is making its way in. Even if you don’t see active dripping, these issues usually start small and then spread. Catching them early is the key.

Remember the Roof’s Birthday

Age is one of the biggest factors in how your roof performs. Most roofs last about 20 years, but that number isn’t set in stone. The quality of the installation, insulation, and ventilation all make a difference. A roof that’s well-installed and properly ventilated can easily last a few extra years, while a poorly maintained one can wear out much sooner.

If your roof is pushing the two-decade mark - or if you’re not sure how old it is - it’s time to start planning ahead. This is especially important if you’ve recently bought your home. Knowing when your roof was last replaced can help you budget and avoid surprises down the road.

Check Those Shingles

Shingles are your roof’s first line of defense, and they’re also one of the easiest things to inspect. Look for shingles that are curling at the edges, splitting down the middle, or missing altogether. These issues often happen as roofs age and are exposed to the elements year after year.

While you’re at it, take a peek at your gutters and downspouts. If you notice piles of shingle granules collecting there, it’s a sign that the protective coating on your shingles is wearing away. Once that happens, your roof is much more vulnerable to leaks.

Don’t Brush Off Moss or Mold

It’s not unusual to see a little moss or dark staining on a roof, but don’t ignore it. Moss and mold thrive in damp, shaded areas, and they can signal that moisture is getting trapped under your shingles. Left unchecked, that moisture can lead to rotting plywood and costly structural damage.

Sometimes, the fix is as simple as cleaning the roof and improving ventilation. Other times, it may require replacing damaged areas. If you’re not sure which it is, calling in a professional is the safest route.

Look Inside, Too

Your ceilings and walls can often tell you what your roof can’t. Yellowish-brown stains, bubbling paint, or cracked drywall are all signs of water damage. Even if the issue looks small, it’s best not to wait. Roof leaks don’t heal themselves - they only get worse. Acting quickly can prevent a small drip from becoming a major repair job.

Call in the Pros

If you’re not comfortable judging the condition of your roof - or just want peace of mind - bring in an expert. Many roofing companies, ours included, offer free inspections. A roofer can tell you how much life your roof has left, point out any problem areas, and recommend the best next steps.

One of the most common reasons roofs fail before their time is poor ventilation and insulation. These issues can cause shingles to age faster, trap moisture, and even lead to rot. A good roofer won’t just look at the surface - they’ll check what’s going on underneath, too.

A little preventative maintenance this fall can make all the difference. Your roof protects everything beneath it. Giving it a checkup now means fewer surprises, fewer headaches, and fewer bills later on.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. For questions, email info@odonnellbros.com with the subject line “Ask the Pro.” Questions may be selected for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit www.odonnellbros.com. Advice is for guidance only.

Ceiling Cracks: When to Worry and When to Relax

Noticing a crack in your ceiling can be unsettling. Is it a simple cosmetic issue or a sign that something more serious is going on above your head?

The truth is, not all ceiling cracks are created equal. Some are harmless, the result of your home settling or seasonal changes. Others may point to structural problems, water damage, or something worse. Knowing the difference can save you time, money, and a whole lot of stress.

The Harmless Kind

Let’s start with the good news: most ceiling cracks are minor and purely cosmetic. These are often hairline cracks that appear in older homes or around joints where drywall meets. They’re usually caused by:

• Normal settling as your house ages

• Temperature and humidity fluctuations

• Drying or shrinking plaster or drywall compound

These cracks are usually thin, less than 1/16 of an inch wide, and don’t change much over time. You might see them in corners, near windows or doors, or in ceilings that haven’t been repainted in a while. They’re rarely a cause for concern.

If the crack hasn’t grown in size, isn’t discolored, and your ceiling is otherwise solid, it’s likely just a visual issue. A quick patch and paint job can take care of it.

The Concerning Kind

Now, the cracks that deserve a closer look. Here are some warning signs that what you’re seeing might be more than cosmetic:

• Cracks wider than 1/8 inch

• Cracks that run across the entire ceiling or extend down a wall

• Multiple cracks appearing suddenly

• Cracks accompanied by sagging, bowing, or soft spots

• Discoloration or staining around the crack

Any of these could indicate a structural issue, such as shifting foundations, water damage, or even a failing ceiling joist. If the ceiling feels soft to the touch or is visibly sagging, it’s time to call in a professional.

One common culprit is water. A roof leak, plumbing issue, or overflowing bathtub on an upper floor can all lead to water pooling in the ceiling. This can cause the material to weaken, crack, and eventually collapse if ignored.

Even more subtle signs, like a ceiling crack that grows over time or changes shape, can point to movement in your home’s framing. That’s not something a coat of paint can fix.

If you’re unsure whether a crack is harmless or serious, don’t guess. Take a photo and monitor it over a few weeks. Has it changed? Is there new discoloration or softness?

When in doubt, have a licensed contractor or home inspector take a look. An early opinion is usually cheaper, and safer, than waiting until a repair becomes urgent.

Ceiling cracks are common. Many are nothing to worry about. But some aren’t. The key is knowing what to look for and acting quickly when the signs point to something more. Your ceiling might be trying to tell you something. Make sure you’re listening.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Have a question? Email info@odonnellbros.com with the subject line “Ask the Pro.” To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.