Posted
October 19, 2009 06:50
by
Robert
Tags: shades, shgc, r-value, hunter douglas, applause
Today our Hunter Douglas cordless
shades were installed by Richie Sher at Blindfolds and he did
a great job. We chose cordless, room-darkening shades, coated to increase
energy efficiency. The backing on these shades is white to help deflect heat
transfer from sunlight. The shades are GreenGuard certified, which means
they meet stringent indoor air quality guidelines.
Good shades can really contribute
to keeping your house cool in summer and warm in winter, an effect measureable
through the shade’s “R-value,” which rates resistance to heat flow. In a home
during winter, R-values indicate the ability of walls, roofs and windows to keep
heat inside. The higher the R-value, the more insulation a product provides (higher
is better). A product’s “solar heat gain coefficient” (SHGC) is a measurement
of its ability to reduce heat gain from the sun. For windows, the SHGC is the
fraction of solar energy striking a window that actually passes through to heat
the room. SHGC is expressed as a number between 0 (none) and 1 (all). The lower
a window’s SHGS, the less solar energy it transmits (lower is better).
The Applause Shades give a
combined R-value to low E glass (the most common type) of 5.78, adding 2.28 to
the glass; the solar heat coefficient is .26. The shades also fit perfectly,
look great, and it’s nice to not have to worry about cords with little kids in
the house.
Currently rated 3.3 by 3 people
- Currently 3.333333/5 Stars.
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