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Property Types & Construction

Storm Window

Definition and meaning of Storm Window in real estate.

Storm window is an additional window pane installed on either the exterior or interior of an existing window to improve insulation and protect the primary glass from severe weather.

In more detail

These windows are common on older homes with historic single-pane wood windows, offering a cost-effective alternative to complete window replacement. They create an insulating pocket of air that reduces drafts, decreases heat loss, and dampens outside noise. Storm windows are typically made of glass, acrylic, or rigid plastic, and they can be permanent or seasonal.

Although modern double-pane and triple-pane windows have reduced their popularity, storm windows remain a budget-friendly option for improving energy efficiency.

Key facts

CategoryProperty Types & Construction
Material optionsAluminum, wood, vinyl, or acrylic
LocationExterior or interior of the primary window frame
Applies toOlder or single-pane window systems
Example

To save on heating bills during the winter without replacing her home's historic wood windows, the owner installed removable exterior storm windows.

Frequently asked questions

Do storm windows help with noise reduction?

Yes, storm windows create a dead air space between the two panes of glass, which acts as a sound barrier and reduces outside noise.

Are interior storm windows better than exterior ones?

Interior storm windows are easier to install and maintain because they are not exposed to the weather, but exterior storm windows offer better protection for the primary window frames.

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