ABOUT RADIANT
SHIELD™Radiant Shield™ is a
cross-woven polyethylene material with an aluminum layer that
reflects up to 94% of radiant energy. It is lightweight, easy to
use and engineered to withstand tough jobsite conditions.
Non-perforated Radiant Shield™ has a very low perm rating
and qualifies as a vapor barrier.
Radiant Shield™ comes in 18", 26" and 48" widths for
easy installation in a variety of applications. Radiant
Shield™ is most commonly used as a radiant barrier in
residential or commercial attics and post frame buildings,
although it can be used anywhere that a radiant or vapor
retarder is needed. It is often used in conjunction with mass
insulation to create a more efficient insulating system.
How do radiant barriers block heat
transfer?
In every building, heat transfer occurs across walls, floors
and ceilings in three ways: conduction, convection and
radiation. Because most mass insulations are aimed at reducing
conductive and convective heat flow, radiation typically goes
unaddressed.
Aluminum foil, the operative material in Radiant Shield™,
reflects thermal radiation very well. In fact, when facing an
air space, the foil surface can reflect up 94% of the radiant
heat energy that it encounters. Installing Radiant Shield™
results in a more complete insulation system that addresses
all three modes of heat transfer.
Recommendations - Foil surface should be
installed facing a minimum 3/4” air space. If air space will be
present on both sides of the material, install the foil side in
the direction where dust accumulation is least likely to occur
(i.e. facing down or toward an enclosed space). Dust
accumulation on foil surfaces has been known to decrease
reflectivity and increase the emmisivity of a radiant barrier
material.
|
*The temperatures depicted here are for
illustration purposes only and are not based on any one test or
study. Actual temperature reduction will vary.
Product
Specs
Composition
Cross-woven polyethylene with aluminum laminated to one
side. Available with or without micro-perforations.
Emissivity (Reflectivity)
.06-.07 (93% - 94%)
Roll Sizes
18" x 250'
26" x 250'
48" x 250'
Applications
● Residential & Commercial Attics
● Pole Barns
● Metal Buildings
● Pallet Covers & Lumber Wrap
|
