Page 58 - Green Builder March-April 2021 Issue

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ReVISION House Scottsdale Product Review

LUBRIZOL FLOWGUARD
GOLD AND BLAZEMASTER: COURTESY OF LUBRIZOL
PREMIUM PIPE
Plumbing should last for the
life of a home. In the extreme
climate of Scottsdale, we
needed plumbing products
that would combine ease FlowGuard Gold CPVC COURTESY OF LUBRIZOL
of installation with super ■ It is durable and corrosion resistant.
durability and zero toxicity. ■ It has a time tested, 60-year history of reliability.
Here’s why we chose the ■ The product offers economical, fast, simple installation
Lubrizol brands: with common tools. BlazeMaster CPVC sprinkler piping
It’s cost effective. It is corrosion resistant.
■ ■
Virginia Tech researchers found that of all common BlazeMaster is fast and easy to install.
■ ■
plumbing materials, FlowGuard Gold CPVC has the smallest ■ The product offers excellent hydraulics.
impact on water quality. ■ It’s cost effective.

WINDOWS AND EXTERIOR
DOORS: COMFORT IMPACT OF WINDOWS
COMPONENTS
Windows are a key component
to the energy performance of Overall Effective R-Value of Vertical Building Enclosure vs Window to Wall Ratio
any home. Since we are striving 30
for zero net energy, it’s even 28
more critical for our project.
Our summer temperatures 26
often top 110 degrees. 24
Our winter temperatures drop 22
down to the low 30s.
The graph below shows the 20
tremendous impact windows 18
have on total wall energy 16
performance. Assuming a Effective Vertical Enclosure R-value-IP
typical glazing factor of 15 14
percent in R-30 walls with 12
R-2 windows, the overall 10 R-30 Wall/R-6 Windows
R-value of the walls drops to R-30 Wall/R-4 Windows
R-10! Upgrading to higher- 8
performance Low E windows 6 R-30 Wall/R-2 Windows
can increase the walls’ 4
performance by 75 percent!
Windows also have a huge 2
impact on comfort. 0
We have not selected a 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
window company at the time of
this article, but stay tuned. Overall Effective R-Value of Vertical Building Enclosure vs Window to Wall Ratio, For R-30 walls and R-2, R-4 and R-6 windows

56 GREEN BUILDER March/April 2021 www.greenbuildermedia.com

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