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Ply-Foil is a multi layer, reflective insulation which comes in
rolls consisting of a variety of widths and lengths for use in both
specialty and standard construction projects. Two outer layers of
aluminum foil reflect 97% of the radiant heat. Each layer of foil
is bonded to a tough layer of polyethylene for strength. The inner
layers of bubble-pack resist conductive heat flow while a center
layer of polyethylene gives Ply-Foil additional strength. (See Illustration)
Ply-Foil provides nominal 3/16" thick
Single Bubble, nominal 5/16" thick Double Bubble, Standard
Edge and Staple Tab product lines for both Metal and Post Frame
Construction. Perfect for New Construction or Retrofit of existing
structures.
Radiant
energy, the major source of heat flow, is energy in the form of
infrared waves. It travels at the speed of light, even through a
vacuum; and is either transmitted through, absorbed into, or reflected
by any material it contacts. Air, water, and glass, for example,
transmit visible light in varying degrees. A white surface, such
as snow, reflects it; and a black surface absorbs it.
Infrared waves work in the same way as visible
light; heat is generated when its energy is absorbed. Common insulation
products, like most building materials, tend to absorb a large percentage
of the radiant energy they encounter as heat. However, tests have
shown that one sheet of aluminum in the center of an airspace reflects
97% of radiant heat. This means that heat rays pass through it at
a rate of only 3%. Properly installed Ply-Foil takes full advantage
of this by using two or more such surfaces separated by encapsulated
air.
There
are a lot of logical reasons to use Ply-foil, including:
Plyfoil comes in large, light weight, easy to handle rolls
that will not blow away or break up in the
wind.
Installers will like working with the product because there
are no fibers to cause skin itch or make
breathing difficult.
Ply-Foil, properly installed and taped, provides an excellent
vapor barrier, assists in limiting condensation
and has shown through testing to offer the top classification of
burn and flame spread ratings.
It will not absorb water if left outside at the job site or
if it is left partially uncovered during
installation.
It will typically not mildew or allow fungus growth and it
is resistant to mice, birds, and insects.
Ply-Foil will give an attractive finished building interior.
Over the years, Ply-Foil has collected and continues
to collect test data on applications
using its insulation products. The following downloadable document
contains information about applications for post frame and metal
buildings including benefits and installation procedures:
 
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