Summer Humidity Problems Nobody Talks About

Every summer, homeowners start noticing strange things around the house: foggy windows, musty basement smells, peeling paint, damp air vents, or condensation showing up where it shouldn’t. It’s not your imagination. Your house is sweating.

Connecticut summers create the perfect conditions for humidity problems, especially in basements. When warm, moisture-filled air comes into contact with cooler surfaces, condensation forms on windows, pipes, vents, walls, and floors. Left unchecked, that excess moisture can lead to mold, water damage, poor air quality, and expensive repairs over time.

Basements are often the biggest trouble spot because they naturally stay cooler than the upper floors of a home. During humid weather, outdoor air sneaks inside through doors, windows, foundation gaps, and poorly sealed areas. Once that humid air hits cool basement surfaces, moisture forms quickly.

One of the biggest misconceptions is that basements simply “feel damp because they’re basements.” In reality, excessive moisture should not be ignored. Over time, high humidity levels can contribute to mold growth, warped materials, peeling paint, mildew, and damage to stored belongings.

Another common mistake homeowners make is opening basement windows during extremely humid weather in an attempt to “air things out.” Ironically, this often makes the problem worse by allowing even more moisture-heavy air inside.

In many homes, a properly sized dehumidifier can make a dramatic difference. Ideally, homeowners want indoor humidity levels to stay somewhere around 40–50 percent during the summer months. Anything consistently higher can start causing issues throughout the home.

Air conditioning also plays a major role in humidity control. Many people think of air conditioners as simply cooling systems, but they also remove moisture from the air. If a home feels cool but still sticky or damp, it may indicate that the system is oversized, not running properly, or struggling to remove humidity effectively.

Sometimes homeowners unknowingly create humidity issues themselves through simple daily habits. Long hot showers without proper ventilation, drying laundry indoors, poor bathroom fan use, and cooking without exhaust ventilation can all add moisture into the air.

Bathroom exhaust fans are another overlooked issue. Many older homes either have undersized fans or fans that simply vent into attics instead of fully outside the home, which can create an entirely different set of moisture problems over time.

Condensation around air conditioning vents is another frequent summer complaint. In many cases, this happens when humid air meets very cold ductwork or vents. While some minor condensation can be normal during extremely humid weather, excessive dripping or staining may indicate insulation issues around ductwork or poor airflow.

Homeowners should also pay attention to signs of exterior moisture intrusion during summer storms. Clogged gutters, poor grading, and improperly directed downspouts can allow water to collect around foundations, increasing humidity problems inside the home.

The good news is that many humidity-related problems are manageable once identified early. Proper ventilation, dehumidification, drainage improvements, and regular HVAC maintenance can go a long way toward keeping homes more comfortable and preventing bigger issues down the road.

Because while nobody wants their house to feel like a Florida greenhouse in July, your basement also shouldn’t smell like a forgotten beach towel by mid-August.

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.

A Power Washing Problem

This time of year, you can spot it all over town. The first warm weekend hits, someone drags out a power washer, and suddenly every surface around the house is getting blasted.

On the surface, it feels productive. The house looks cleaner and the grime disappears. You stand back and think, great, my spring cleaning is done. The problem is, power washing is one of the easiest ways to accidentally damage your home if you don’t know what you’re doing.

I see it every spring. The biggest misconception is that more pressure equals a better clean. But it really means you’re forcing water into places it shouldn’t go or stripping away materials that are supposed to protect your home.

Take siding, for example. Vinyl siding is designed to shed water, not withstand high-pressure spray at close range. Aim a pressure washer upward or get too close, and you can drive water behind the panels. That moisture gets trapped and over time it can lead to mold, mildew, and even rot in the structure underneath.

Wood is even less forgiving. We’ve seen plenty of decks and trim that looked fine before a weekend cleaning and came out rough, splintered, and permanently damaged. Once you tear up the surface fibers of wood, you can’t undo it. You’re sanding, repairing, or replacing it entirely.

Then there are windows. High-pressure water can break seals, force moisture into frames, and shorten the lifespan of the window itself. Again, it might not show up immediately, but it’s the kind of damage that creeps in over time.

And don’t forget about paint. A pressure washer in the wrong hands can strip paint right off siding and trim. Sometimes people think they’re “prepping” a surface and end up creating a much bigger project than they planned for.

So what’s the right way to do it?

First, understand that most homes don’t need high pressure at all. What they need is the right cleaning solution and a controlled rinse. A soft wash with low pressure, combined with a cleaner that breaks down dirt, algae, and mildew is usually far more effective and a lot safer. One of my favorite products is Wet It and Forget it which doesn’t require any pressure washing at all and is great at removing common outdoor stains and grime.

Second, distance matters. Standing too close is where most of the damage happens. If you’re using a pressure washer, keep your distance and let the water do the work gradually instead of trying to blast everything off in one pass.

Third, know what you’re cleaning. Concrete can handle pressure. Your siding, trim, windows, and deck? Not in the same way. Treating everything the same is where people get into trouble.

Lastly, timing matters. Early spring is a great time to clean up your home’s exterior but it’s also when materials are still coming off a long winter. They’re not always in their strongest condition, which makes aggressive cleaning even riskier.

The goal here isn’t to scare you off from cleaning your house. It’s to do it in a way that actually helps instead of quietly creating problems you won’t notice until later. If you’re going to power wash this spring, ease up on the trigger. Your house will thank you for it.

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.

Spring Moisture and Mold Season

Every spring, Connecticut homes go through a quiet transition, and it is not just the obvious one happening outside. While we are noticing greener grass and warmer days, our homes are dealing with something else entirely: moisture buildup.

When that moisture finds its way into your home, even in small amounts, it can create the perfect conditions for mold to take hold. Here is the problem: mold does not need a flood or a major leak. It simply needs a little dampness and a place to sit undisturbed. That could be inside a wall, beneath a floor, or up in an attic with poor airflow. Once it starts, it spreads quietly.

A lot of homeowners assume mold is easy to spot. Sometimes it is, but more often, it remains hidden. It might show up as a faint stain overhead, a patch of peeling paint, or a room that always smells a little off, no matter how much you clean it.

In my line of work, we see it all the time. We frequently open up a wall during a project and find mold that has clearly been there for years, completely unnoticed. It is much more common than people think, especially in older homes or spaces that lack proper ventilation.

Contrary to popular belief, it is not just about the health of your home. Mold affects indoor air quality, which means it can impact how you feel day to day, especially if you are already dealing with allergies or respiratory issues.

So, what actually helps? In most cases, it comes down to managing moisture before it becomes a major problem.

A few things worth paying attention to this time of year include:

• Check your grading: Ensure water always moves away from your house by verifying that your yard is graded properly.

• Clear your gutters: Keep gutters and downspouts free of debris, and make sure they extend far enough from the foundation.

• Fix the roof: Address small roof issues early and thoroughly, as they rarely stay small.

• Check ventilation: Verify that bathroom fans vent outside rather than into the attic, where moisture easily gets trapped.

• Inspect for leaks: Take a closer look at any new signs of water on your ceilings or walls.

• Dry it out: Dry or remove wet materials quickly, particularly carpets.

• Use a dehumidifier: Run a dehumidifier in your basement, as these spaces tend to hold moisture longer during the spring.

• Monitor appliances: Place simple trays under your appliances to catch slow leaks and identify issues early.

One of the biggest mistakes we see is treating mold like a surface problem. If it keeps coming back after cleaning or painting, it means the source has not been addressed. Until the underlying moisture is fixed, the mold will keep returning.

That is when it is worth digging deeper, sometimes literally, and getting a professional involved. They can help figure out where the moisture is coming from and how to stop it permanently.

Spring is the time when a lot of homeowners shift into "fix-it" mode, which is a great thing. If you can stay ahead of moisture now, you will avoid much bigger headaches later in terms of both repairs and air quality.

Ultimately, when it comes to mold, it is rarely about one big event. It is the small, consistent moisture issues that do the most damage over time.

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.” Questions may be considered for publication. To learn more, call (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.