Rule your attic, save on energy costs

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Measuring Attic Energy Efficiency
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Cold winds are here as winter settles in, but is your attic insulation up to the challenge?

Now is a good time to double-check your rafters and attic space to ensure they are properly insulated against energy leakage.

>> Download this PDF how-to guide <<

In 9 out of 10 American homes, under-insulated attics are wasting money by increasing utility bills. By adding insulation or sealing air leaks, you can save up to 10 percent on your home’s annual energy bills – and keep your family more comfortable.

Here’s how to “rule your attic” this year:

        1. Measure. Go into your attic space and measure the insulation level.

          EE_Attic Insulation_2018_measuring insulation
          Source: Energy Star
        2. Get solutions. If you find low insulation levels, get advice on how to seal and insulate your attic for comfort and savings. Here’s a video showing you some tips.
        3. Fix and save. Take steps to fix your attic insulation level by hiring a contractor or doing it yourself. If you make the fixes yourself, make sure you have the right safety equipment on hand. Some of the equipment you will need: gloves, dust mask, tape measure, eye protection, caulk and caulk gun and spray foam.

In addition to energy savings, other benefits of sealing and insulating your home include: reduced noise from outside; less pollen, dust and pests entering the home; better humidity control.

Finding air leaks

More than any other time of year, you notice air leaks in your home in winter. You may feel these drafts around windows and doors, leading you to think these leaks are a major source of wasted energy. But in most homes, the most significant air leaks are hidden in the attic or basement.

In cold weather, warm air rises in your house. If it goes up into your attic, it is wasted energy, and will suck cold air in all around your home’s windows and doors.

Even if you have adequate attic insulation, sealing attic air leaks will enhance its performance and make your home more comfortable.

Common sources of air leaks:

  • Behind kneewalls
  • Attic entry hatch
  • Wiring holes
  • Plumbing vents
  • Open soffit (the boxes that house recessed lighting)
  • Recessed lights
  • Furnace flue or duct chaseways (the hollow box or wall feature that hides ducts)
  • Basement rim joists (where the foundation meets the wood framing)
  • Windows and doors
EE_Attic Insulation_2018_common air leaks
Source: Energy Star
Work smart and safe

If you choose to seal air leaks yourself, it’s important to keep a few key things in mind.

First, have a plan in place by gathering all your tools and supplies before you go into the attic to minimize trips in and out of the space. Be sure the areas is well-lit, as well.

You should also prepare to get dirty. The process of sealing your attic will be easier if you take the time to wear the right gear, including knee pads, disposable coveralls, gloves and a hat. This clothing will keep itchy insulation off your skin.

Finally, and above all, be safe. The attic can be a dangerous working environment. Remember to watch your step. Walk on joists or truss chords, not exposed ceiling drywall or insulation. Also be on the look out for sharp nails sticking through the roof deck.

Energy Star offers a comprehensive website with videos, checklists and guidelines for insulating your attic and sealing air leaks. They also offer a YouTube page with additional resources.

Laura King-Homan

About Laura King-Homan

Laura King-Homan is the managing editor of The Wire and a communications specialist at the Omaha Public Power District. She has nearly 20 years of print journalism and design experience, including the Omaha World-Herald.

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