Asphalt Versus Metal Roofs

When thinking about a new roof, finding the right contractor, negotiating the best price, and deciding on the color and style are just a few of the options to navigate. But in the past, one thing homeowners often didn’t have to think about was the material, as asphalt roofs have been the most popular choice in our area for their cost-effectiveness and durability. But recently, metal has begun increasing in popularity. While metal roofs are more common in areas of the country with more extreme weather conditions, it’s always good to know about the different options available. So let’s take a deeper dive into the pros and cons of asphalt and metal roofs to help you make the best decision for your home.

The Asphalt Roof

Asphalt is the most popular choice with homeowners for a variety of reasons, but the single most important factor is almost always the price. The average cost to purchase the materials for an asphalt roof is nearly one-third of the cost of a metal roof. That cost differentiation gives asphalt the leg up almost every time. In addition to being the more cost-effective option of the two choices, there is a lot to love about asphalt. Individual shingles give a homeowner lots of color and design choices, and they are faster to install than a metal roof, often taking just a few days of labor. While most asphalt roofs come with a 30-year warranty, they are easy to repair if damaged, and a small section can be replaced without having to get a whole new roof. The material also performs exceptionally well in the rain, heat, sleet, and snow.

Of course, there are a few negative aspects of asphalt roofing that homeowners should be aware of. If you’re installing a new asphalt roof, I always recommend removing the old roof before installing new material, which does add to the labor cost. Another negative factor is the chance that mold, mildew, and algae will grow if a roof is shaded and stays damp for long periods of time. Also, while our Connecticut weather isn’t as severe as other parts of the country, very high winds can loosen shingles if they aren’t installed properly.

The Metal Roof

Even though they aren’t as common in our area, metal roofs have some very attractive qualities that make them worth considering. Firstly, the material is lighter than traditional asphalt roofs, and the metal sheets can often be installed right over regular asphalt as long as it doesn’t have water damage or rotten plywood underneath. Metal roofs also last longer than asphalt roofs, and maintenance is minimal. Mold and mildew cannot grow on metal so if you live in a damp area with lots of shade, this might be a worthwhile benefit. Another plus is that metal roofs are energy efficient all year round, helping to keep the house cooler in the summer and warmer in the winter. Plus they perform very well in areas with very high-level snowfall.

Of course, there are a few cons that homeowners should be aware of, and the biggest one is cost. While metal roofs do last longer, the upfront cost can be three times as much as an asphalt roof. Additionally, if a metal roof needs to be repaired, that will also cost more as metal roofs are made in sheets and need to be replaced in that way. From an aesthetic perspective, metal roofs do come in different colors, but there aren't many more options in terms of design and aesthetics. Finally, it’s important to know that without the proper plywood installation and insulation, metal roofs can be noisy, which might not be a con for people who love the sound of rainstorms.

No matter which material you use, it’s important to do your research to find the best product for your individual home. The right roof with the right contractor at the right price will ensure that you live comfortably with peace of mind for many 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 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.

Roof Mold Makes a Comeback as the Rainy Season Arrives

Spring temperatures and April showers may make for May flowers, but they also create the perfect recipe for something not nearly as pretty. Welcome to roof mold season readers. My phone rings off the hook for roof cleanings come April and May when Connecticut’s moisture and humidity levels kick into high gear, giving mold and mildew the opportunity to thrive. So what’s with the black, streaky stains popping up on everyone’s houses and what can you do to get rid of them?

Stains on a roof are generally algae, which gets carried by wind or birds from roof to roof, and may not be visible until there is enough moisture, heat, and humidity for it to grow and spread. Homes that aren’t properly insulated and ventilated are also susceptible to the problem because they retain moisture a lot more than houses with proper airflow.  

Now don’t be too alarmed, algae isn’t necessarily going to ruin your roof immediately, but it does put a damper on the curb appeal of your home. Plus, the problem could end up damaging and pulling up your shingles if not dealt with for a long period of time. 

An interesting fact is that copper, zinc, and lead are toxic to algae, and many newer roof shingles contain copper granules, which act as a barrier against any mold growth. Homes with older roofs won’t benefit from this technology, but it explains why you won’t see algae where metal flashing has been installed. If your home is susceptible to algae and you’re in the market for a new roof, be sure to inquire about this type of shingle. 

So now that you know about mold, how do you get rid of it? The easiest way to remove roof algae is a specially made cleaning solution, which can be applied to the roof by a professional who is used to working from a ladder. The cleaner can be left on and will actually work as a barrier to help the roof stay cleaner for years to come.

If your roof has major mold problems, you might need to take an additional step. As I mentioned, copper, zinc and lead-coated sheet metal are toxic to algae, so installing a strip of flashing will help stop nasty fungus in its tracks. Choose a strip that’s at least six inches wide, and have it installed at the roof peak to ensure that the metal molecules wash down with the rain and protect the roof from mold build-up. Happy Cleaning! 

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 House That Can Breathe is Crucial To Its Health and Yours

I’m not shy about educating my readers on the importance of proper insulation in a house. But even if you’re one of only 20 percent of homeowners I meet with the right amount of insulation, chances are you’re still missing a critical piece of the puzzle. The missing component is ventilation and not enough of it can be harming both your home and your personal health in more ways than you think. 

In the winter, we crank up the thermostat, sending more heat into our homes than any other time of year. We all know that heat rises, which means a lot of what we’re pumping into the house will quickly find its way through the ceiling and into the attic. Think about when you’re in a car and the windows fog up. What do you do? Usually, you’ll increase the airflow either by using the vents or just cracking a window. A house works much the same way, except that if you don’t have air flowing inside the attic, the heat and moisture just gets stuck there. If the attic is very warm, that moisture will develop into mold and mildew which can feed on your insulation and rot the wood. If the attic is cold enough, the moisture will freeze into little domes or even icicles until the temperature rises enough for the water to thaw and then be absorbed into all the places that it shouldn’t. Neither is a good scenario.

So what’s the best way to protect your home? Start by investing in a hygrometer that measures water vapor in the air. A comfortable humidity reading is 30%-60%, but 45%-55% is an ideal level to maintain. If you’re seeing higher than 60% humidity in any area of your home, it’s going to be susceptible to mold, mildew and bacteria growth.

Remember, attic ventilation allows your house to “breathe” so you want to balance your intake and exhaust to ensure that what is coming in is going out equally. The best ventilation system will include soffit vents that are installed underneath the overhang of the roof and take in the air and ridge vents that are installed at the top of the roof for the hot air to escape. For this method to work efficiently, all louvered vents must be sealed off and you have to ensure that your insulation isn’t blocking the airflow. Believe it or not, most roof manufacturers will void the warranty if a proper ventilation system is not installed. Luckily, new roofing technology enables contractors to add intake ventilation directly into the roof as opposed to using soffit vents, so if you’re in the market for a new roof, be sure to ask for that option. 

It’s important to note that homes have different characteristics and what works well for one may not work well for another. With the right balance of air, homeowners can optimize their roof and maintain the overall health of their home and their families. Remember, it’s always a good idea to get advice from a professional before taking on a big remodeling project. 

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.