common pitfalls of storefront & curtain...
TRANSCRIPT
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Common Pitfalls
of
Storefront & Curtain Wall
Anthony S Santocono
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Air Barrier Association of America (ABAA) is a Registered Provider with
The American Institute of Architects Continuing Education Systems.
Credit earned on completion of this program will be reported to CES
Records for AIA members. Certificates of Completion for non-AIA
members are available on request.
This program is registered with the AIA/CES for continuing professional
education. As such, it does not include content that may be deemed or
construed to be an approval or endorsement by the AIA of any material
of construction or any method or manner of handling, using, distributing,
or dealing in any material or product.
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Kawneer CompanyTechnology Park / Atlanta
555 Guthridge CourtNorcross, Georgia 30092
Anthony S Santocono
Kawneer Company
Field Investigation & Engineering
647-222-1709
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ThankYou Sponsors!
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GENERAL INSTALLATIONPROCEDURES
STOREFRONT & CURTAIN WALL
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PROCEDURES THAT REQUIRE ATTENTION TO DETAIL
• Basic Performance Principles – Curtain Wall vs
Storefront
• Install Plumb – Level – True
• Water Control – Storefront & Curtain Wall
• Proper Anchoring
• Perimeter Shim Clearance
• Sill Flashing
• Expansion Joints
• Gaskets
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PROCEDURES THAT REQUIRE ATTENTION TO DETAIL
• Critical Seals
• Setting Blocks
• Pressure Plate Torques
• Structural Silicone Glazing
• Condensation Resistance
• Perimeter Seals
• Finish Care & Regular Maintenance
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INSTALLATION PROCEDURES
• First And Foremost, Materials Are To Be Installed Plumb, Level, And True
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Plumb – Level - True
Plumb level and true?
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End Dam and Flashing
Sill
Flashing
Building Substrate
Sealant
Aluminum
End Dam
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Sill Flashing
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Sill Flashing
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Sill Flashing ?Sill Flashing
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Sill Flashing Seal?Sill Flashing
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Storefront Water Control – Water (Drip) Deflector
• Install Water Deflectors
• Intermediate Horizontals Only
• Seal Around Water Deflectors
• Seal Groove at Thermal Break
• Seal Vertical Weathering Reglets
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Water Control – Water (Drip) Deflector
Water
Deflector
Double-Sided
Tape
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Water Control – Water (Drip) Deflector
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End Dam Solution #1?
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End Dam Solution #2?
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Water Control – Joint Plugs on Storefront?
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End Dam Solution ?
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Water Control – Weep Slots & Weep Hoods?
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DO NOT DRILL THROUGH BACK LEG OF SILL FLASHING
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DAM HEIGHT?
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Sill Flashing
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Pressure Equalization - Compartmentization
ZONEJoint Plugs/
Zone Dams
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Pressure Equalization
Joint Plugs/ Zone Dams
• Prevents“Chimney Effect” by Blocking Air Currents
• Prevent Water from Running Down Vertical Mullions
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Pressure Equalization
Baffled or Rain Screen Weeps
• Allows Water to Drain from System
Pressure Equalization
Baffled or Rain Screen Weeps
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Water Control - Curtain Wall Rain-Screen Principle
Critical Seals
Missing / Weep
Slots – Holes?
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Water Control - Curtain Wall Rain-Screen Principle
Critical Seals?
Weep Slots -
Holes?
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Locate Screws 9” On
Center And As Close
To The
Horizontal Joint
As Possible.
Torque Screws To 95
to 100 Inch Pounds
Page 8 of 9
Pressure Plate Screws
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Pressure Plate Torque ?
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Pressure Plate Torque ?
90 to 100
inch/pounds ?
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Anchorage: T and F Anchors
M x L x WL
2= 750# +
Tubular Mullions Only
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Perimeter Anchors
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Locate Shims Properly
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Anchor Shims ?
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GLAZING GASKETS
• Install in 4 Individual Pieces
• Cut Long for Compression
• Start at Corners and Work Toward Center
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Gasket Application
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Gasket Application
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Gasket Shrinkage
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SETTING BLOCKS
• Typically Installed at 1/4 Points
• 4” Long
• Consult Glass Manufacturer
• Blocks May Be Moved to 1/6 or 1/8 Points to
Limit Deflection
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SETTING BLOCKS
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Setting Blocks
SETTING BLOCKS ?
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Setting Blocks
SETTING BLOCKS ?
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Setting Blocks
SETTING BLOCKS ?
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SIDE BLOCKS
• Keep Glass from Shifting
• Used for Dry/Dry
Glazed Systems
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SIDE BLOCKS
SIDE BLOCKS ?
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CONDENSATION
Many Factors Contribute to Condensation
• New Construction Natural Moisture• Uncured Cement
• Plaster
• Painting
• Inadequate Airflow Across System
• Window Coverings
• Outside Cold Temp / Interior Temp
• Excess RH etc. etc.
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Condensation Resistance ?
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Condensation Resistance
Relative
Humidity (RH)
Surface
Temperatures
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Condensation Resistance
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Condensation Resistance
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Condensation Resistance
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PERIMETER SEAL
• Use Backer Rod to Fill Void and Support Sealant
• Apply Sealant and Tool It
• Interior & Exterior Seals
• Sealant Must Be Compatible with All Surfaces,
• 1/4” Nominal at Storefront
• 1/2” Nominal at Curtainwall
• Provides Adequate Space for Proper Sealant Joint
• Isolates Framing From Surrounding Conditions or
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Perimeter Seals
Where is the shim clearance?
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PERIMETER SEALS
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STRUCTURAL SILICONE GLAZING
A METHOD OF BONDING THE GLASS TO THE FRAMING
• Two-Sided Structural Silicone Glazing• Typically Done in the Field
• Four-Sided Structural Silicone Glazing• Best When Done in a Controlled Environment
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STRUCTURAL SILICONE GLAZING
• Consult Sealant Manufacturer on a Job-to-Job Basis
• Sealant Type May Vary Per Application Depending on Material, Temperature, & Substrate
• Cure Time
• All Spacers, Blocks, and Tapes Must Be Compatible with the Structural Seal
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STRUCTURAL SEALANT APPLICATION
• Application is Critical
• Ambient Air Temperature
• Surface Preparation - Primer if Necessary
• Mask Glass and Aluminum
• Apply Sealant and Tool
• Sealant Must Cure Before Removing Glazing Temporaries
• Cure Time Will Vary Depending on Joint Design
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STRUCTURAL SILICONE APPLICATION
STRUCTURAL SILICONE APPLICATION ?
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PROTECT ALUMINUM & FINISH FROM OTHER MATERIALS
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Finish Care & Regular Maintenance
Aluminum staining?
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Finish Care & Regular Maintenance
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Finish Care & Regular Maintenance
BEFORE AFTER
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Finish Care & Regular Maintenance
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?’s
Thank You