When adding attic insulation, homeowners commonly have two choices: fiberglass batts or blown-in cellulose. It’s an important decision because the attic is an important target area for effective insulation. In winter, rising heat in rooms conducts through the ceiling into the attic, causing your furnace to run longer to compensate, raising heating costs. In summer, concentrated heat in the attic radiates down into living spaces and overworks your A/C. Adding attic insulation of the right type and quantity makes a difference in indoor comfort and efficiency year-round. Here’s why blown-in is often the best choice.
Fiberglass batts roll out between ceiling joists and must be cut and patched in an attempt to fill the many odd-shaped nooks and crannies in a typical attic. Cellulose is a loose-fill product composed of millions of bits of pulverized paper treated with fire retardant. Blown into your attic under air pressure, cellulose effectively fills every void of any shape, large or small, for comprehensive coverage to fully inhibit heat transfer. Once installed, cellulose has the coverage density and appearance of a layer of new-fallen snow.
The efficiency of an insulating material is rated by its R value. “R” stands for resistance and the numeral assigned indicates the material’s effectiveness at inhibiting heat transfer. Fiberglass insulation has an R value averaging 3.2 per inch of depth. Cellulose offers an R value of 3.8 per inch—a significant improvement indicating greater heat resistance than fiberglass.
Reduced Air Leakage
No form of insulation is an adequate replacement for proper air sealing to prevent air leakage. However, a layer of cellulose does slow air moving in and out of the attic, while fiberglass insulation has no effect at all.
Fiberglass insulation is made from new raw materials. High-temperature gas-fired furnaces are required to melt and spin the mineral fibers into the finished product. Cellulose is 75 percent recycled paper and cloth and the manufacturing process is far less energy-intensive.
Thinking about adding attic insulation to increase energy efficiency and indoor comfort? Contact the professionals at Apollo Home Heating, Cooling and Plumbing.
"Ernie & Mike did a superb job on my new furnace and A/C installation. Despite having more than a day’s work to do, they came in and stayed until the job was done. They were organized, efficient, and protected the rest of the house well. Got both furnace and A/C installed the same day. Ernie was courteous, informative, and clearly knew his job better than anyone I’ve encountered before. The units look so good guests now get The Tour of our new system. Apollo is clearly not a fly-by-night company. I would recommend them to anyone in need of a new furnace and/or A/C."
- Jerry A.
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"The team at Apollo exceeded my expectations. As a business owner, my attention to the details and commitment to providing excellent service is high. From the sales rep. to the installation team, everyone’s performance was outstanding. For example, the installation team went to great lengths to protect our floors, placing floor runners and across the wood floors and up the stairs. They even were spot washing walls upon their departure. I highly recommend this company."
- Randy B.
"We scheduled an estimate AND a tune-up. We knew something was wrong with our furnace, but hoped we could make it through the rest of the season. Upon telling Bill what our furnace was doing, he warned us immediately what the possible outcome was going to be; a cracked heat exchanger. He watched the flames roll backward, tested carbon monoxide levels, which were so high they meter’s last reading was 5,600 before saying “high”. He immediately shut it down, tagged it, and explained that with levels that high and children in our home he wanted off right away. He continued his inspection and showed us via a camera that not only was it cracked in multiple places, but had holes all over it. He gave us a few options for repairing it; his knowledge as well as genuine concern was beneficial and refreshing. Luckily we also scheduled an estimator, Micah, to come too and we were able to get costs between repairing and replacing (with several options). We decided to replace with a much higher efficiency furnace and one sized properly to our home. Hands down, not only did they both provide us great service and knowledge, but without sounding dramatic, they may have saved our lives. This was our first time calling Apollo, but it won’t be our last."
- Sarah B.
"Apollo is an excellent company. I always receive great service. Alex A. was professional and friendly. He kept me informed during the process of checking my furnace and heat pump to make sure they were working properly. The company makes sure you are notified who is coming and when they are on the way. All my interactions with the company have been wonderful."
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