Acrylic

The windows in the school building are made out of cell cast acrylic the other type of acrylic is extruded acrylic however this isn't of as high a quality as cell cast acrylic and I wanted the building to look as realistic as possible. Cell cast acrylic is made by pressing the liquid inbetween moulds to create sheets of plastic. Another benefit of using cell cast instead of extruded is that it is much stronger than extruded acrylic. This is a much safer material to use than glass as it will not smash easily like glass will. Acrylic is also very clear an so lets 92% of light to pass through it whereas very thick glass has a slight green tint to it. Acrylic can also maintain it's appearance well and doesn't weather like some materials. It can last for decades without starting to look worn. It is also half as heavy as glass as well making it very easy maneuver. Some acrylic can be up to 32mm thick and this is actually bullet resistant. This thickness of acrylic is what they actually use for plane windows.