Mold in the Home: Why Spring is Prime Time for Growth in Connecticut

When spring rolls into Connecticut, we welcome warmer temps, blooming flowers—and unfortunately, the perfect storm for mold. With all that spring rain and lingering moisture, mold growth becomes a common (and sneaky) issue for homeowners this time of year.

Mold thrives in damp, dark spaces, and once it finds a cozy spot in your home, it doesn’t need an invitation to stick around. Whether it’s behind walls, under flooring, or up in the attic, mold can quietly spread while you’re none the wiser—and it’s not just your home at risk. Mold spores in the air can also wreak havoc on your health.

Most people associate mold with the usual suspects: the shower tiles, the bathroom grout, or that old sponge you really should toss. But mold problems often lurk in much less visible places. If you’ve ever had a roof leak, a damp basement, or a poorly ventilated attic, odds are you’ve had mold—even if you never saw it.

In fact, at least half the homes I visit for remodeling projects have mold problems hiding beneath the surface. It’s not always dramatic black splotches on walls; sometimes, it’s the faint discoloration on a ceiling or that musty smell in a room that never quite dries out.

So, what can you do to stop mold before it becomes a serious (and costly) problem? Start by keeping moisture at bay—especially during the wet spring season. Here are my top prevention tips:

• Keep gutters and downspouts clear so water drains away from your foundation.

• Grade your yard properly. The ground should slope away from your home, not toward it.

• Fix roof leaks immediately, and have your contractor check for any mold during repairs.

• Watch your ceilings for discoloration or bubbling paint—these are red flags.

• Install quality ventilation in bathrooms, and make sure fans vent outside, not into the attic.

• Don’t let carpets stay damp. Mold can begin forming within 48 hours of water exposure.

• Place trays under large appliances like washing machines and refrigerators to catch leaks.

• Use a dehumidifier in basements or any area prone to excess humidity.

And here’s the kicker—if you’ve already tried cleaning or painting over mold and it keeps coming back, that’s a big red flag. Surface fixes won’t solve a deeper issue. If mold returns, it’s time to bring in the pros before it spreads further or impacts your indoor air quality.

Spring is beautiful in Connecticut—but it’s also wet. Don’t let mold sneak in with the season. A little prevention now can save you a big headache (and an even bigger repair bill) later.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob 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.

Tackling Mold on Your Roof

Mold is a type of fungi that thrives in damp and humid conditions, making your roof a potential spot for growth. While roof mold might not be as noticeable as the mold you see inside your home, it can lead to some serious issues if ignored. Here are a few things to keep in mind about the risks associated with mold on your roof:

Structural Integrity: Mold can weaken your roof’s structure. It can damage shingles, deteriorate wood, and affect the overall stability of your roofing system.

Health Concerns: Mold spores can become airborne and make their way into your home, potentially causing respiratory problems, allergies, and skin irritations.

Energy Efficiency: Mold can compromise your insulation, leading to higher energy bills and a less comfortable indoor environment.

Curb Appeal: A moldy roof isn’t just a concern for your home’s health; it can also impact its appearance and market value.

To keep your home and family safe from the risks of mold, it’s important to take proactive steps. Here are some friendly tips for prevention and remediation:

1. Schedule Regular Roof Inspections: Aim for annual inspections to catch mold early. Professionals can spot potential issues before they become serious.

2. Ensure Proper Ventilation: Good airflow in your attic and roof helps keep moisture levels in check, reducing the risk of mold. Consider adding roof vents or attic fans if needed.

3. Clean Your Gutters and Downspouts: Clogged gutters can lead to water pooling on your roof. Regular cleaning can help prevent this and reduce mold growth.

4. Repair Any Leaks Promptly: Address signs of water infiltration as soon as you notice them. A leaking roof is a prime spot for mold to thrive.

5. Act Quickly on Mold Removal: If you discover mold, it’s important to take action. Hiring professionals experienced in mold removal is the safest way to ensure thorough and effective treatment.

6. Install Zinc or Copper Strips: Consider placing these metal strips at the top of your roof. Rainwater reacts with them to release ions that can help prevent mold and algae growth.

7. Trim Overhanging Trees: Keeping tree branches away from your roof allows for better sunlight and airflow, which can deter mold growth.

8. Choose Mold-Resistant Roofing Materials: When it’s time for a roof replacement, consider materials designed to resist mold growth.

Mold on your roof is a concern that deserves attention. By taking preventive measures and addressing issues promptly, you can protect your home and your loved ones. Regular inspections, proper ventilation, and maintenance are key to keeping your roof healthy. If you find mold, don’t hesitate to seek professional help to ensure your roof stays mold-free. A well-maintained roof not only safeguards your home but also enhances its beauty and value.

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.

Attic Ventilation is Key for the Home

I recently did work for a homeowner who got the shock of her life when we removed her old roof and found sheet after sheet of black, rotten plywood. The homeowner couldn’t believe it and asked me how the plywood could be so damaged if she had never had a roof leak. 

The answer is quite simple and a lot more common than you think. In our area of Connecticut, nearly all attics don’t have enough insulation and aren’t ventilated properly. I meet people who need a new roof and want me to just lay an extra layer of shingles over top of what they already have to save money. What they don’t realize is how much deterioration exists that they simply can’t see.

With a roof, airflow is absolutely crucial. Attic ventilation allows your home to “breathe” by taking in air from the outside and letting out air from the inside. Too many homes that I work in aren’t properly ventilated, in fact, most have their bathroom and even dryer vents going into the attic instead of outside. In order to have proper ventilation, your home needs a system that includes intake ventilation through the soffit or a new product called SmartVent which is installed on top of the roof near the gutter edge. Louver vents were typically used at an exhaust vent in the 1950’s and 1960’s but now ridge vents are more common. If your house has both louver vents and ridge vents, the louver vents should remain closed, otherwise, the louver will act as an intake vent and will only cool the top third of the attic. 

In the colder months, it’s not uncommon for me to see frost on attic plywood because of subpar insulation. Insulation and ventilation work hand in hand - the ventilation controls the airflow and the insulation controls the temperature. You’re probably familiar with insulation - it’s a cotton-looking fiberglass material that often comes in pink or yellow rolls. It can also be loose-filled into tough to reach areas with a blowing machine. Remodeling professionals use insulation between walls, in attics and in basements to retain heat in the house in the winter and keep it cooler in the summer. However, without proper ventilation, the insulation is just as susceptible to moisture and deterioration as the plywood.

My customer didn’t venture into her attic, so she never noticed the problem. What she thought was a simple roof replacement ended up being a bigger job simply because after years of decay, the plywood she had was no longer strong enough to properly support the new roof. Ignoring the problem would have voided the new roof’s 30-year warranty.

The lesson for this week? If you’re going to reroof your home, make sure that the plywood is healthy and that your contractor has given you a thorough plan to ensure that your home is properly insulated and ventilated. It might cost a bit more today, but it will regulate the heat and cooling in your home for years to come, saving you on energy costs and giving you more comfort as well as peace of mind for the health of your house.

Bob O'Donnell is the owner of O'Donnell Bros, Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob 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 www.odonnellbros.com. Advice is for guidance only.