Restoring Steel Windows

Until the late 1940’s, the materials of choice for window frames was steel or wood. Later, aluminum, vinyl and clad wood came on the scene to displace those venerable materials. Steel windows became obsolete because aluminum offered greater versatility in cross-sectional shape due to the extrusion process.

An Interview with Historic Mike Jackson

Mark Meshulam is an window consultant and glass consultant for window replacement & renovation.   Mike Jackson, FAIA, is the Chief Architect of the Illinois Historic Preservation Services Division of the Illinois Historic Preservation Agency (IHPA). He oversees the evaluation of changes to historic buildings when regulatory and benefit programs are involved. He is also a visiting professor of architecture at the University of Illinois…

Historic Window Renovation

Mark Meshulam is an expert witness and consultant for window preservation. In a continuation of our 20 year retrospective of our unique historic window replacement at Chicago’s Field Museum of Natural History, we have dusted off never before seen video of the design and testing of the project, jazzed it up with some editing and have posted it here for your edificial edification. Historic window…

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