Windows and sliding glass doors generally come with removable screens. Screens for french doors or glass swinging doors usually are not provided by the manufacturer and must be custom made. Aluminum screening was standard in the past but has been almost
completely replaced with fiberglass or nylon mesh. These materials are more flexible, more transparent, do not dent, and are easy to replace. Unfortunately, they also can be odorous, especially if they have been treated with insect repellents, pesticides, or other chemicals. When windows arrive onsite the screens should be unwrapped and stacked in a protected environment so they have an opportunity to air out prior to installation in the completed home. If after a substantial airing the screens still have an objectionable odor, they can be replaced with aluminum or copper at a custom screening company. Andersen windows are available with aluminum or stainless steel insect screens. Marvin windows can be ordered with aluminum screening.
Screens on crank-out casement or awning windows will have more impact on indoor air quality because they are placed on the inside of the glass. Occupants will be exposed
to these screens even when the windows are closed. On double-hung windows, the screens are placed outside the glass.
