Welcome to Chicago Window Expert!

My name is Mark Meshulam. I am a building facade consultant with nearly 40 years of experience. I stumbled into the window/glass/facade industry in 1981 and have never looked back. It is an exciting field with ever-evolving technology. In this field, you literally never stop learning. As an added benefit, when you build buildings, you can bore friends and family by pointing out all the projects you ever worked on. For these reasons I encourage a career in construction.
But for some reason, the accumulated wisdom of the construction industry remains largely undocumented. Trades knowledge is one of the last bastions of the oral tradition, handed down from limping old-timer to buffed & tattooed newbie. Many of us make up our own construction terms (“sleevo bar”) and theories (“condensation is caused by cold air hitting warm air’) as we go along. Window and curtainwall design and testing are rarely taught in school. We just learn it as we go. Things could be better on the educational front.
So here is my small effort at bringing years of hands-on experience to those of you who, like me, are fascinated with building…
No matter where you are, Chicago Window Expert can help you
Chicago Window Expert Mark Meshulam has appeared on ABC, CBS, NBC and Inside Edition news programs explaining the technical aspects of glass and windows.
Mark Meshulam, Chicago Window Expert performing air and water testing on an installed sliding door prior to developing a repair procedure. Having the ability to do preconstruction testing as well as field testing after window repair or replacement greatly enhances chances for success
Chicago Window Expert Articles
Construction claims and disputes
Legal Claims and Disputes in Construction
Window water leaks
Window Water Leak Testing
Aluminum Window Leaks
Curtainwall Leaks
Fixing Window Leaks in Tall Buildings
Leaks and Problems with Vinyl Windows
My Windows Leak!
Window Glazing Leaks
Wood Window Leaks
Window air leaks
Fix Window Air Infiltration Leaks in Cold & Drafty Windows
Replace Weatherstripping on Drafty Windows
Window condensation
Condensation Investigation & Testing for Windows and Buildings
Window Condensation: Top 10 Fixes
Sudden Temperature Drop, Cold Snap Coincides with Window Condensation Article Web Traffic
Window installation
Bad Window Replacement: Top 10 Installer Screw-ups

Falls from windows
Expert Witness & Investigation of Window Falls
Deadly Falls from Windows: Preventable?
Window Dangers in College Dormitories: The Tragedy of Taylor Cothran
Glass energy performance
Glass Consultant for Architects, Engineers and Building Owners
Fine Tuning Low-E Glass
Low-E Glass for Cooling Loads
The Lowdown on Low-E Glass
Thermal Images of Insulated Glass Types
Glass manufacturing processes
Insulating Glass Dewpoint Testing
Annealed, Heat Strengthened, Tempered and Insulated Glass

Glass breakage & glass safety
Expert Witness & Investigation of Glass Injury
Breaking Glass Shower Doors & Enclosures
Broken Glass Evidence in Crimes and Accidents
Broken Glass Evidence in Crimes and Accidents Part 2
Diagnosing Glass Breakage
Glass Breakage and Pre-Existing Damage
Why did my glass break? How to document glass breakage
Nickel Sulfide Inclusion and Spontaneous Glass Breakage
Safety Glass: Is It Really Safe?
Storm Damage to Windows and Glass
Insulated glass seal failure – window sealant failure
Insulating Glass Dewpoint Testing
Insulated Glass Seal Failure
Window Sealant Failure
Masonry leaks and failures
Masonry & Wall Moisture Intrusion Investigation & Testing
Leaks and Mold in Walls: the dirty little secret
Leaks Through Split Face Block
Testing Leaking Brick Walls

How to investigate window leaks and building envelope problems
Window Consultant for Architects, Engineers and Building Owners
Choosing a Window Consultant or Exterior Building Consultant
Creating a Leak Survey Form
Documentary Photos for Curtainwall Survey
Documentary Photos for Window Survey
Keying for Window Leak Survey
Performing a Window Survey
Preparing for a Window Leak Survey
Window & building standards
Window Consultant for Architects, Engineers and Building Owners
AAMA, NFRC, ANSI, ASCE, CPSC, NFPA, UL, GANA Standards
ASTM – Standards Relevant to Building Envelope from ASTM International
Building Energy Benchmarking and Window/Curtainwall Retrofit
Building Energy Benchmarking and Window/Curtainwall Retrofit Part 2
Chicago Energy Conservation Code for Dummies
Does Chicago Code Require Low-E Glass?

Window & building design
Window Consultant for Architects, Engineers and Building Owners
Envision the Wind in a Blizzard
The Symbolic Value of Buildings
Wind Loads and Windows for the Very Windy City
Window Repair or Window Replacement?
Windows for Buildings: Window Types & Materials
Windows: Significant for Energy and Comfort
Wynning in Glass Vegas
Window testing
Air Infiltration Testing for Windows and Curtainwalls
Window Water Leak Testing
Condensation Investigation & Testing for Windows and Buildings
Dynamic Water Test
Test Your Mettle at Construction Research Lab
Preconstruction Mockup Testing: A Guide for Construction Professionals
Window Testing: Ultimate Quality Control

Window replacement & restoration
Window Consultant for Architects, Engineers and Building Owners
Field Museum Window Replacement
Historic Window Renovation
Restoring Steel Windows
Sustainable buildings & alternative energy
Chicago Window Expert Goes Solar
CWE Visits Solar Power Plant
The Future of Windows
Influential people and companies
Bill Baker of Skidmore, Owings & Merrill LLP: Tall Buildings and the Burj Khalifa
An Interview with Historic Mike Jackson
An Interview with Guardian
An Interview with PPG
An Interview with Viracon
About Chicago Window Expert
About Mark Meshulam, Chicago Window Expert
Factories visited
Projects built
Analytics – Web statistics
Facebook page
Twitter page
Mark Meshulam’s CV
Chicago Window Expert Services
Air Infiltration Testing for Windows and Curtainwalls
Condensation Investigation & Testing for Windows and Buildings
Expert Witness & Investigation of Window Falls
Expert Witness & Investigation of Glass Injury
Glass Consultant for Architects, Engineers and Building Owners
Insulating Glass Dewpoint Testing
Insurance Investigation for Claimants or Carriers
Masonry & Wall Moisture Intrusion Investigation & Testing
Window Consultant for Architects, Engineers and Building Owners
Window Water Leak Testing

Chicago Window Expert in the News
ABC: Consumer Beware: Glass Shower Doors Can Shatter Suddenly
CBS: 2 Investigators: Older Glass Windows Are Potentially Deadly
CBS: 2 Investigators: Glass Shower Doors Can Shatter Without Warning
CBS: Glass Experts Warn About Exploding TV Stands
CBS: How Safe is the Glass Used in Doors and Windows?
CBS: Shattering Shower Doors
Inside Edition: Exploding Glass?
Inside Edition: Ledge At Willis Tower Back In Business After Cracks Appear
NBC: Consumers Report Tempered Glass Sinks Exploding Without Warning
NBC 6 Investigation: Glass in Desks Spontaneously Explode
NBC Dateline: Shattered, the tragedy of Josh and Amber Hilberling