PROJECT
exteriors
Nuts To Poor Insulation
Sto Corp. siding system provides energy efficiency for Fisher Nuts’ corporate facility.
M
anagement at Fisher Corporate
existing cladding with Sto Corp.’s (Atlanta) stuc-
Center, Elgin, IL, experienced con-
co system. StoPowerwall ci (formerly StoPower-
tinuing moisture issues with the
wall EnergyGuard) was used for the project.
building’s siding, despite repeated repair attempts
StoPowerwall ci is a stucco system that pro-
at failed sealant joints. In fact, water leakage be-
vides heat, air, and moisture management, along
gan shortly after the building was constructed
with protective and aesthetic elements. The sys-
in 1992. Administrators at the four-story office
tem incorporates StoGuard air and moisture bar-
building wanted a traditional stucco system and
rier, StoDrainScreen, Dow Styrofoam XPS insula-
the most energy-efficient system they could buy
tion, StoPowerwall stucco, and Sto textured
to help with heat, air, and moisture management
finishes and coatings, in this case, StoPowerflex
in the facility. Building Technology Consultants
Finish & StoCoat Acryl Plus where applicable,
PC, Arlington Heights, IL, was initially retained
into a comprehensive system that supports green
to evaluate potential sources of water and leak-
building and moisture protection across all cli-
age and develop repair recommendations. BTC
mate zones.
recommended a façade rehabilitation project that
“Our intent was to replace our underperform-
would include replacement of all cladding and lo-
ing system, and we were looking for long-term
calized repairs to the strip windows. Considering
solutions,” said Kelly Day, director of administra-
factors including aesthetics, durability, and antic-
tion for John B. Sanfilippo & Son Inc. (Elgin) for
ipated future maintenance, the building owner
Fisher Corporate Center. “There was leaking in-
selected a three-coat stucco system as the most
side the building, and the old cladding didn’t
effective option.
withstand the cold and heat. The new system ap-
Josh Summers, principal structural engineer,
pears to be a good one, with additional R-value
and Chris Kottra, engineer with BTC, oversaw
for the building, providing more insulation for
the project, and brought in contracting company,
the 54,000 sq. ft. of outside surface.”
Mark 1 Restoration, also of Elgin. Mark 1 Resto-
Energy efficiency and weather resistance were
ration representatives called in Carol Stream, IL-
key, and so was the flexibility in design in the new
based Skyline Plastering’s team to serve as the ap-
system. The team tore open the walls, taking off
plicator of the project. After the initial mock up,
the exterior skin down to the studs, and renovated
they got to work removing and recladding the
the exterior with the new system. The results include a quieter, more energy-efficient building where leaks and drafts were eliminated. The Skyline team replaced many studs that were rusting away and deteriorated due to water intrusion. According to Skyline Plastering’s president, Peter Klyachenko, “We kept most of the existing interior insulation intact but did add insulation where it was needed behind the sheath-
Above. A façade rehabilitation project included replacement of all cladding and localized repairs of the strip windows to preserve the look but improve the performance of the exterior cladding system. All photos: Gary L. Parr Right. StoPowerwall ci stucco system provides heat, air, and moisture management, along with protective and aesthetic elements for the Fisher rehabilitation project.
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COMMERCI A L BUIL DING P RODUC T S
JUL/AUG 2015
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ing. Once sheathing was installed, we first treated all the joints and then installed a continuous fluid-applied air/vapor barrier called StoEmeraldCoat by Sto Corp.” Next they installed the Dow Insulation (which was blue in color) to provide continuous insulation outbound of the sheathing. Prior, there was white insulation (EPS), used temporarily in loca-
