Vapor Barrier is a material that will prevent moisture from penetrating and collecting in a
particular area.
particular area.
R-value is the resistance to heat flow. As the insulation's R value increases, the better the
material resists the transfer of heat. Some common R values are R11, R19 and R30
material resists the transfer of heat. Some common R values are R11, R19 and R30
a brand name of Dow Chemical. The styrofoam normally come in panels and is attached on
Insulation Batts are precut fiberglass or rock wool insulation. These batts can either be
faced or unfaced. Faced batts have paper or foil on one side of the batt. Normally faced batts
are used in the exterior walls and in the interior walls.
faced or unfaced. Faced batts have paper or foil on one side of the batt. Normally faced batts
are used in the exterior walls and in the interior walls.
Cellulose insulation is a form of blown in insulation. This insulation is normally blown in loose.
Another process adds a liquid adhesive and is blown in wet. The insulation has to be allowed
to dry before covering with drywall.
Another process adds a liquid adhesive and is blown in wet. The insulation has to be allowed
to dry before covering with drywall.
Insulation
Batt Thickness varies with the R value of the insulation. The higher the R value the greater
the thickness. An insulation batt with a R value of 11 will measure 3 1/2 inches and fit in a 2x4
wall cavity. A value of R19 will fit in a 2x6 wall cavity.
the thickness. An insulation batt with a R value of 11 will measure 3 1/2 inches and fit in a 2x4
wall cavity. A value of R19 will fit in a 2x6 wall cavity.
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Insulation Baffles are used to allow air to flow from the eave of the house into the attic and
out the roof vents. The baffles are attached the bottom of the roof decking between the rafters.
out the roof vents. The baffles are attached the bottom of the roof decking between the rafters.
Blown Insulation is a process in which loose insulation is blown into the attic instead of using
batts to produce a insulation blanket. Blown insulation is normally a cellulose, fiberglass, or
rock wool material.
batts to produce a insulation blanket. Blown insulation is normally a cellulose, fiberglass, or
rock wool material.
Construction Jargon
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Construction Jargon
Faced Insulation
Un-Faced Insulation