No matter where you live, your attic
space should be insulated, but this is an even more important factor
in areas that experience cool winters, and most especially those
who actually receive snow throughout. While most people are unaware
of it, a home should have at least 9 inches of fiberglass
insulation in order to save heat and money on heating energy bills,
even in milder climates. For fiberglass insulation in northern states,
12 inches or more of insulation is the norm.
There are several different types
of insulation, from fiberglass rolls to loose-fill insulation that
blows on with a special blower. However, many homeowners take one
look at those large rolls of pink or yellow insulation and shake
their heads, thinking it really isn't necessary to deal with. Many
are intimidated at the thought of installing insulation, but if
you take proper safety measures, there really is nothing to worry
about.
Depending on the size of your attic,
an insulation job can take anywhere from a few hours to most of
the day. Thicker insulation will take longer to apply than thinner,
but purchase the R-value of insulation that is suggested for your
area. The higher the R-value, the better the insulation. Keep in
mind that a minimum of R-19 is recommended for exterior walls. Your
local hardware store should have a guide that suggests R-values
for your area.
Before purchasing, measure the area
between joists in your attic so that you buy the right width of
insulation materials. If nothing matches, get the closest you can
find and then prepare to trim insulation with a utility knife.
After you've purchased your insulation
rolls, and before you start unwrapping, take a few precautions.
No matter how hot it is in your attic, wear long pants, shoes, socks,
and long sleeved shirts. Insulation fibers can itch, and
feel like slivers imbedded into your skin. After you're down a cold
shower will flush any fibers off your body. Hotter water opens up
your pores and the fibers will lodge in them. Then, you will have
a mild jellyfish sting sensation on your body. Gloves and a facemask
are equally important. You do not want to inhale insulation fibers
if it can be avoided. Then:
- Measure and cut insulation to fit
in-between joists, starting on an exterior wall at one end of
the attic. Work toward the attic entry. Insulation material is
spongy, so you'll need to press firmly to cut it.
- Gently set the piece of insulation
into the space and tap into place with your hand. You do not need
to nail, staple or otherwise fasten the insulation into place.
- Leave a 3-inch gap around electrical
boxes, fixtures and lights. Make sure that insulation fibers will
not float toward the fixture, by framing with pieces of 2x4 if
necessary.
You may also wish to cover the first
layer of insulation that is now placed between the joists with another
layer of rolled insulation, but that is a personal preference and
in most climes, is not necessary.
