Airflow in the Attic, What Insurers Don't Want You To Know

If you’re a regular reader, you know that roof insulation, ventilation, and airflow are my favorite topics to talk about. The reason I tend to focus on these areas is that, in nearly 50 years of business, I still cannot tell you how many homes in our area suffer from mold, mildew, and moisture problems. A house that can’t breathe is one that harbors bacteria, so not only are people living less comfortably than they should, they are also subjecting themselves to long term health problems like asthma, allergies, and lung function. 

No homeowner actually wants to believe their home is allowing moisture to thrive and many are intimidating by taking the proper steps to fix the problem. What’s worse is that many insurance companies won’t cover the cost for attic ventilation, which means that homeowners are skipping a crucial step in the re-roofing process. So let’s make this simple to understand. Here are five reasons why attic ventilation is absolutely necessary:

1. It’s the only way a roof will meet its life expectancy.

2. A shingle warranty will be void without it. 

3. It keeps a building up to code.

4. It ensures that the vents themselves are sufficient. 

5. It helps to guarantee that a replacement roof will be worth the thousands you’ll spend on it. 

In addition to the financial and structural benefits, there are also health and comfort reasons too. Proper attic ventilation fights summer heat build-up and reduces the risk of ice dams and moisture in the winter. It keeps a house warmer in cold months and cooler in hot months so energy bills are lower and heating and air conditioning systems don’t have to work as hard. Plus, as I mentioned before, you’re lowering your risk of mold and mildew taking a stronghold in your attic, which can then spread into your living space and affect the air that you breathe every single day. 

According to a poll conducted by Roofing Contractor Magazine last spring, 77% of North American homes today have improper attic ventilation, including not enough or incorrect ventilation. So why are insurance companies shying away from covering ventilation? Good question!

As a professional, I can tell you that if insurers do cover proper attic ventilation, it will actually save insurance companies a ton of money in future claims. Proper ventilation keeps a roof healthy and stable which means it’s much less likely to be damaged during a storm. This week’s wind was a perfect example of what can happen. Of the 20 calls that I received about roof damage, at least 15 homeowners will be eligible to make an insurance claim. If just a few shingles come off because of the weather, it’s probable that insurance will cover it. 

Dealing with insurance can often be prickly so my word of advice for homeowners is to make sure you deal with a roofing company that’s reputable and knows what they are doing. If there is no mention of insulation and ventilation in an initial conversation about replacing your roof, you’re better off looking elsewhere. How you replace your roof is your choice, but you deserve to know and understand all the options available. 

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.

Keep a Close Eye On Those Ceiling Cracks

I’ve been in the remodeling business for nearly 50 years and I’ve had my fair share of hair-raising discoveries inside of people’s homes. I’ll never forget one warm autumn afternoon when I got a call from a woman in Bristol who told me her roof was leaking. You wouldn’t think this seemed odd considering that I am a roof remodeler, but it hadn’t rained in a month. I mentioned this to the caller and she said, “Well I can’t be sure where the water is coming from, but my dining room ceiling just caved in.” 

I hung up the phone and immediately made my way over to her house. Sure enough, when I arrived, a pile of sheetrock and plaster had already been hauled onto the front lawn. Upon entering the house, I found that the ceiling had completely crumbled, leaving a soggy mess of remnants all over her dining room set. 

I first asked to see the bathroom on the second floor and I was told there wasn’t one. So I climbed into the attic and gasped when intense heat hit me in the face. I also noted two air conditioning units in the dining room - one in each window. I asked the homeowner about the air conditioners and how often they were used. It turned out that she had them on full power all summer long to try and regulate the temperature since the top floor of the house was so hot. 

It was easy for me to see why the homeowner’s ceiling fell in. A lack of insulation and ventilation in the attic was causing the house to heat up to an uncomfortable level during the summer months. The homeowner tried to combat this problem by cranking up her A/C. By doing so, she was creating major condensation in the walls and ceiling of the home. 

When hot and cold air collides it causes moisture which gets into plaster, sheetrock, and even wood. That moisture then generates mold spores that literally eat away at the ceiling and walls. Her 1950s Cape Cod home was like most in our area, constructed with such poor insulation and ventilation that they are susceptible to rot. A surefire sign of trouble for this homeowner was cracking in the ceiling. Instead of calling me when the problem first reared its head, her husband tried to mask the problem using those 12x12 ceiling panels that you often see in doctor’s offices. He meant well but the attempt at a cosmetic repair only added another layer of material for the moisture to seep into. 

The moral of the story is this. If your home has temperature issues, do not ignore the problem. By not addressing the humidity and moisture in your home, you could end up with major structural damage or worse. If that’s not enough to convince you, mold and mildew are leading causes of asthma and breathing problems, especially in young children and the elderly. Is saving money really worth putting your family’s health at risk?

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.

Roof Damage Isn't Just What's on the Outside

I recently did work for a homeowner who was shocked to see black, rotten plywood underneath her roof. She never had a leak and wondered how there could be so much damage without any signs, other than an old roof that was deteriorating and needed to be replaced.

I see this problem a lot more often then you might think. In our area of Connecticut, 90 percent of attics don’t have enough insulation and aren’t properly ventilated. I meet people who need a new roof and want me to just replace the shingles to save money. What they don’t realize is how much deterioration exists where they can’t see. Once the plywood is exposed, warping, delamination, and rot from moisture usually come as quite a shock. 

So why does this happen? The issue is actually airflow. Attic ventilation allows your house to “breathe” by taking air in from the outside and letting air out from the inside. Too many homes that I work in aren’t properly ventilated and most have their bathroom and even dryer vents exhausting 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 1950s and 1960s 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 inferior 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 put 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, insulation is just as susceptible to moisture and deterioration as plywood.

My customer never went up into her attic, so she didn’t notice 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 and laying new shingles over the existing plywood 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, saving on energy costs and making you much more comfortable for years to come.

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.