From Plywood To Polycarbonate Sheet
People in the plastics industry have known for over 50 years that Polycarbonate Sheets are tough. This clear plastic sheet material is commonly used to replace window glazing. The best known property for this sheet materials is that it is break resistant, or in many cases, unbreakable. This is a great benefit for areas where window glass is broken easily.
Recently some cities have passed ordinances to change out the plywood window coverings on abandoned homes, and they are installing clear polycarbonate sheets instead. This is a very attractive replacement, and is a big step in fighting the blight of abandoned homes.
Polycarbonate is produced under several trade names, including Covestro Makrolon®, SABIC Lexan®, Cyrolon®, Zelux®, Tuffak® and many more. These materials are available in sheets, plate, slab, bar and rod.
Read more on this material below.
Excerpt from AZCentral, The Arizona Republic:
Property owners and banks in Phoenix had begun outfitting windows with sheets of polycarbonate, a thin, nearly indestructible plastic that mirrors the appearance of glass.
And last month, the city became among the first in the U.S. to make polycarbonate windows a matter of municipal law.
Phoenix now requires all window and door openings visible from the street to be secured with the material if the structure has been unoccupied for more than 90 days. The 90-day provision is also new, replacing the previous deadline of 180 days. The measures were the result of an abandoned buildings task force that Gallego spearheaded.
Read the rest of the story, and see Phoenix City Councilman Michael Nowakowski and City Manager Ed Zuercher attempt to break a polycarbonate window in Phoenix: http://www.azcentral.com/story/news/local/phoenix/2015/04/02/phoenix-fights-blight-plastic-windows/70826784/ Durham County, North Carolina also made a change:
By Taylor Knopf, tknopf@newsobserver.com
No one likes living next to abandoned buildings with boarded up doors or windows. So the city of Durham started replacing the plywood eyesores with a clear, durable plastic.
The city is working to reduce the number of abandoned houses by helping owners fix them up. But for houses that still need boarding up, the city has found that plastic not only improves the overall appearance of a neighborhood, it may reduce crime by discouraging squatters and making it easier for police to see inside vacant buildings.
“I can’t stress enough how the elimination of the boards has a tremendous positive impact on neighborhoods and communities,” said Faith Gardner, housing code administrator of the city’s department of neighborhood improvement services.
These communities have fought back against vandalism and crime, as well as enhanced the value of local homes by changing from Plywood to Clear Polycarbonate Sheets. This super tough 
glazing grade clear Polycarbonate Sheet material is the same kind of material that Police Officers use for face shields and banks are using for bullet resistant glazing.
The premier manufacturer of Polycarbonate Sheet in the USA is Covestro (formerly Bayer MaterialScience), and they produce Makrolon Polycarbonate Sheet. Polycarbonate is also available in rod and thick plate for machined parts.
Consider using Polycarbonate sheet for your next glazing material.
Both of these polycarbonate sheets are very high impact (considered unbreakable), and are exceedingly transparent, has the look of transparent glass. As one of the only clear plastic materials that is high impact, polycarbonate in glazing applications are very tough, and can take numerous hammer blows without cracking or breaking. Also, one of the distinct differences between these materials is the UL rating. Here is a copy of the current (May 2013) data sheets for these two brands of material – Bayer 
). Sheet sizes vary, but generally most plastics are produced in 48″ X 96″ sheets or larger, but once again this changes with types of materials and thickness desired. We can help with almost any plastic material. 
