Storm Windows are fixed on the interior or exterior side of the primary glass window of houses. IN cold conditions, they can be retrofitted on the existent windows to enhance the thermal efficiency by hindering the loss of heat from interior and obstructing the intrusion of cold from the exterior.

The storm windows are created out of rigid plastic panels, glass or pliable plastics and can be mounted on a temporary or permanent basis. Interior storm windows have an upper edge over their exterior counterparts as they can be easily installed and removed; demand minimal maintenance owing to their less exposure to harsh environmental elements; and they fight air intrusion more efficiently as they seal snugly to the main glass window. Windows with glass panes can be counted upon for their longevity and clear visibility over their plastic counterparts. Stylish and contemporary variants are available that adds character to the room.