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A century ago it was not uncommon to
find homes built without any house insulation in them. Wood or coal was cheap
and many people simply didn’t understand or care that they were wasting energy.
There were also few house insulation solutions back then to cost effectively
insulate a home even if folks wanted to. Today, with energy costs sky high and
many home insulation products available to homeowners, house insulation is not
only a necessity, it’s a requirement in new home construction.
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According to the Department of Energy
nearly half the energy used in a home goes towards heating and cooling it.
The four major areas of house insulation that is necessary for ensuring an
adequately insulated home are the attic, walls, floors and doors/windows. The
most common type of house insulation today is rolled or batt fiberglass
insulation. It is designed to fit in between standard stud wall spacings and
comes with or without a paper facing. The paper facing is used as a vapor
barrier and is applied warm-side in. With most climate regions this means the
paper faces the interior of an insulated room.
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Attics are the chief concern in house insulation as warm air rises. Without
sufficient attic insulation much of a home’s heat is lost to the outside via the
attic. Depending upon what climate region you live in, the Department of Energy
recommends between R-30 and R-49 house insulation, 9.5 to 15.5 inches of
insulation, respectively, in the attic. The R value is a common metric for
comparing house insulation types and thicknesses, and their resistance to heat
transfer.
In regards to wall insulation, the required thickness depends on the width of
the wall studs used. |
If 2x4s were used in the wall
construction then R-11 to R-15 house insulation should be used. If 2x6s were
used in the wall construction then R-19 to R-21 insulation should be used.
For floor house insulation the Department of Energy recommends between R-11 and
R-25, 3.5 to 11.5 inch, respectively, depending upon the climate you live in.
Around doors and windows, either sprayed foam insulation or fiberglass
insulation should be installed around the door/window frames and the adjacent
wall studs.
Other common types of house insulation include blown-in fiberglass or cellulose
insulation, rigid foam insulation, sprayed polyurethane foam insulation, and
reflected insulation systems. The foam insulation types offer some of the
highest R-values per inch, however they typically require a professional to
install them and they can be quite messy during the installation phase. |
Photo By Mark Donovan |
So inspect your home this winter to make sure it has adequate house insulation.
If it doesn’t, install the required amount per the Department of Energy’s
recommendations. The cost of house insulation is fairly inexpensive and the
energy cost savings can be quite dramatic.
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