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.

Tackling Summer Window Condensation

You’ve probably noticed those pesky water droplets forming on your windows as summer humidity rises. It’s not just an eyesore—it can also be a sign of underlying issues within the home. 

Condensation occurs when warm, humid air comes into contact with a cooler surface—like your window glass. During summer, the air inside your home is usually cooler (thanks to your trusty air conditioner) while the air outside is hot and humid. This temperature difference causes moisture to condense on the cooler inside surface of your windows. Here are a few reasons why you might see more condensation:

1. High Humidity Levels: Summer air can hold a lot more moisture, especially in places like Connecticut where it's humid in the summer and dry in the winter.

2. Poor Ventilation: Without proper airflow, moisture has nowhere to go, leading to higher humidity inside your home.

3. Inefficient Windows: Older or single-pane windows might not provide the best insulation, causing the inside surface of the glass to get cool enough for condensation to form.

Why is condensation a problem? While a bit of condensation might seem harmless, it can actually lead to a few issues, such as:

• Mold and Mildew: Excess moisture can create the perfect environment for mold and mildew, which can damage your home and harm your health.

• Damage to Windows and Frames: Prolonged exposure to moisture can warp or rot wooden frames, damage seals, and reduce the lifespan of your windows.

• Reduced Visibility: Condensation can make it difficult to see clearly through your windows, affecting your view and natural light.

Now that we know what’s causing the problem, let’s dive into some solutions. Here’s how you can reduce and even prevent condensation on your windows:

1. Improve Ventilation: Make sure your home has good airflow. Use exhaust fans in kitchens and bathrooms, and consider a dehumidifier if humidity is a persistent problem. Opening windows when it’s not too humid outside can also help.

2. Upgrade Your Windows: If you’re still dealing with single-pane windows, it might be time to upgrade. Double or triple-pane windows with insulating gas between the panes can significantly reduce temperature differences and condensation.

3. Seal Leaks: Check for and seal any leaks around your windows and doors. This can help keep humid air outside where it belongs.

4. Use Blinds and Drapes Wisely: While it’s tempting to keep blinds and drapes closed to block out the sun, this can actually trap heat and humidity. Try to keep them open when possible to allow air to circulate.

5. Maintain Indoor Plants: Houseplants are great, but they can add to indoor humidity. If you have a lot of plants, consider moving some outside or to a well-ventilated area.

6. Regular Maintenance: Keep your windows in good shape by regularly checking seals, cleaning them, and ensuring there’s no damage to the frames or glass.

Remember, a little attention goes a long way in keeping your windows—and your home—in great shape. Stay cool and dry this summer!

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.

What to Know About Ice Dams

This winter has been fairly mild but the season is still in full swing and it won’t be long until we get another storm to remind us that we live in New England. Before that happens, I always like to talk about the dangers of ice dams and the reason why so many homes in our area get damaged by them. 

An ice dam is a solid mass that forms when heavy snow blankets the roof, creating an extra layer of unwanted insulation. As warm air rises from your house and up through your attic, it causes the snow to melt and the water to slide down into the gutters. This would typically be just fine, but because so many homes in our area aren’t properly insulated, the melting ice will often make contact with the cold eaves of the roof and freeze again instead of draining off through the gutters. This forms a large ice mass at the gutter line, which will grow if not taken care of.

Solid ice is heavy and can easily pull gutters loose. The dam can even get strong enough to lift up your roof shingles, creating gaps that let the water through and into the attic. This is when people start to see leaks in their ceilings and walls. 

The only way to prevent ice dams from forming is to have your home properly insulated and ventilated. More than 75% of homes in our area are under-insulated which causes the heat from your home to shoot right through the roof. Because insulation and ventilation weren’t regulated when most of the homes were built in this area, a lot of us have houses that are better suited for Florida winters than our cold Connecticut climate. 

Having appropriate insulation and ventilation will not only keep your home free from ice dams but will also keep you much more comfortable in both the winter and the summer. You’ll feel the difference immediately, and you’ll see the benefit in your energy bills too. A house that can breathe and can properly regulate its own temperature will also be less like to accumulate mold and mildew which is not only damaging to your house but also to your health. It’s a simple solution to keep your family, your home, and your wallet healthy. 

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.