Storm window
protective secondary window
Storm windows are windows that are mounted outside or inside of the main glass windows of a building. Storm windows are common on homes in North America, but are uncommon in continental Europe where double, triple or quadruple glazing is prevalent. Storm windows can be made of glass, rigid plastic panels, or flexible plastic sheets; and may be permanently or temporarily mounted. On modern houses they serve on existing windows in order to improve their thermal insulation, functioning similarly to insulated glazing, as well as to provide soundproofing.
Aside from insulation, external storm windows provide an additional measure of protection for homes against damage to costly glass panes during inclement weather such as hail. On older houses, storm windows were installed in autumn when the window screens were removed; later homes had the pieces combined in one unit. Similarly, storm doors (also called "screen doors") allow similar energy savings for the necessarily less efficient primary doors – the screen allows for summer ventilation.
In the United States, the older style of this window is often referred to as a "storm sash". The term may also refer to a small openable flap found in the side window on light aircraft.
Manufacturing process
There are several laminated glass manufacturing processes:
The first method uses two or more pieces of glass bonded between one or more pieces of plasticized polyvinyl butyric resin using heat and pressure.
The public source identifies “Storm window” as protective secondary window. This brief keeps that definition visible, then builds a research path around Storm, window and protective.
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This entry incorporates text from “Storm window” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.