Chicago Window Expert Nobody knows more about windows.
  • Welcome to Chicago Window Expert

    Mark Meshulam is an expert witness and consultant for windows, glass and building exteriors.

    This is the very first posting of Chicago Window Expert… welcome!

    Windows (the building kind, not the Bill Gates kind), have become an increasingly pivotal element of almost every building, whether new or existing.

    Building design is dominated by windows and glass

    Building design is dominated by windows and glass, as can be seen in this sampling of Builders Architectural window projects.

    Windows provide a great view, one of the most important selling points of any property.

    The outside appearance of any building’s windows is usually that structure’s single strongest architectural expression.

    Windows keep the outside climate at bay while providing a comfortable indoor climate at any time of the year.

    The degree to which windows perform their many and varied functions has a great effect on property value.

    In short, windows have become very important!

    Nothing important is ever simple, and windows are no exception. The process of selecting windows for a building is a challenge worthy of an experienced window consultant.

    Diagnosing problems and designing fixes is a specialty requiring combined skills of a window consultant experienced in material sciences, physics, hvac, meteorology and structural engineering.

    It is my hope that my 30 years of experience, and my company’s 50 years of history will provide a rich source of answers to the many questions you may have on this diverse and very current topic. I encourage you to submit questions and comments.

    Welcome to Chicago Window Expert!

    Need a window expert?
    No matter where you are,
    contact me, Mark Meshulam,
    the Chicago Window Expert
    For the expert attention you deserve
    Mark@ChicagoWindowExpert.com
    Download Brochure
    Download Mark Meshulam’s CV
    Download Field Testing Credentials

    Current client locations:
    Alabama, Alberta, Arizona, Arkansas, British Columbia, California, Colorado, Connecticut, Florida, Georgia, Hawaii, Illinois, Indiana, Iowa, Japan, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, New Jersey, New York, North Carolina, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Russia, Singapore, Tennessee, Texas, Utah, Virginia, Washington State, Washington DC and Wisconsin.
    Coming soon to your area!

    4 Comments
 

4 responses to “Welcome to Chicago Window Expert” RSS icon

  • I have a rental home out of state (IL) with a approx. 7’x4′ fixed, insulated-glass, vinyl picture window. After an ice storm, my renters told me that a branch had fallen & cracked the glass in this window. I sent a friend (since I live in CA) to look at it. The glass on the INSIDE was cracked– outside glass was fine, & no marks or blemishes on the outside vinyl frame.
    My question: Is it possible for an impact from the outside to crack the inside pane of this dual-pane window?
    Or, if it’s possible, is it likely?

    Thanks- Daryl Walker Walker Construction darylwalker1@comcast.net

    • Hi Daryl,
      That’s a good one. Mental note: write an article on glass breakage patterns. It’s a cool subject.
      To answer your question, yes it is possible for an outside impact to initiate the breakage of an interior lite.

      I can think of these circumstances:

      1. The inner and outer lite are different with regard to tempering. If the outer lite is tempered, it can absorb almost four times the blunt impact force (prior to breaking) than a non-tempered lite can tolerate. During the impact, it deflects and hits the interior non-tempered lite which is more brittle. Counter argument: the outer lite must travel the distance of the airspace before even touching the inboard lite. By this time it has already absorbed much of the blow. Then it must deflect the inner lite to the breaking point without itself breaking. Likelihood: low.

      2. The inner lite has a concealed defect which is triggered by the outside impact. The most common defect which could behave this way is a chip in the edge of the glass (sometimes called an “oyster” but don’t eat it). It is concealed within the frame. Edge damage which eventually devolves into breakage usually expresses itself in the first few seasons, responding to thermal cycles, which your Illinois home should experience. It could be possible that an outside impact could get that edge chip to “run”. Likelihood: medium.

      3. Tenant had wild party and drunk bimbo stumbled and put elbow into glass. Or jock buddy was trying out new 3-iron and missed the open part of the window. Have a security deposit?

      Daryl, if you have pictures of the breakage pattern or the branch, send them to mmeshulam@buildersarch.com and I will be happy to comment further.

  • Thanks so much for your response. I have a cell phone picture but it’s not very clear. I’ll see if I can have someone take a better one & get back to you. I suspect your option #3 is the most realistic. Thanks again…

  • I have been looking looking around for this kind of information. Will you post some more in future? I’ll be grateful if you will.


Leave a reply

*

Generic selectors
Exact matches only
Search in title
Search in content
Search in posts
Search in pages
Filter by Categories
About windows & glass
Accident investigation
Aluminum windows
architecture
Bad replacement windows
Bad window installation
Bad window replacement
Best windows
Broken glass evidence
building design
Building Energy Benchmarking
Building envelope
Building science
caulking contractor
Construction defects
Curtainwall retrofit
Drafty windows
Energy Efficient Windows
Expert witness
Exterior facade consultant
falls from windows
Fiberglass windows
Glass
Glass breakage
Glass evidence
Glass Safety
Glass types
leaks in walls
masonry
Mockup testing
mold in walls
My windows leak
Nickel sulfide inclusion
personal injury
Preconstruction mockup testing
PVC windows
Renewable Energy
Repair or replace windows?
Replace weatherstripping
Restoring windows
Safety glass
Safety glazing
Secondary glazing
Shower doors
Shower enclosure
solar energy
Solar Power
Spontaneous glass breakage
Steel windows
Testing windows and glass
The Construction Process
Types of glass
Vinyl windows
Web statistics
Window air infiltration
Window air leaks
Window condensation
Window dangers
window falls
Window gaskets
window replacement
Window retrofit
Window safety
Window test
Window testing
Window types
Window water leaks
Window weatherstrips
Windows and Energy
Windows leak
Wood windows
Wynn Hotel
Contact

No matter where you are,
Chicago Window Expert can help you
Mark Meshulam
Email me               CV-Resume'
Brochure      Testing Credentials
Follow us on Facebook or Twitter
for updates you won't see here
View Mark Meshulam's profile on LinkedIn

Caulking, Waterproofing                Window Warmers
Now offering caulking, tuckpointing and waterproofing services in selected areas. We also have a system to warm window surfaces to reduce or eliminate condensation. Contact mark@chicagowindowexpert.com
for details

Photo of the day

d5-panel-install-crew.jpg
The panel crew with general contractor and yours truly.

Locations

Alabama, Alberta, Arizona, Arkansas, British Columbia, California, Colorado, Connecticut, Florida, Georgia, Hawaii, Illinois, Indiana, Iowa, Japan, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, New Jersey, New York, North Carolina, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Russia, Singapore, Tennessee, Texas, Utah, Virginia, Washington State, Washington DC and Wisconsin

Coming soon to you