Types of Windows

[[Double Hung Windows|Double hung windows]] are produced with offset upper and lower sashes, each of which moves vertically within the window frame due to an internal mechanism which permits the panes to be easily lowered and raised.

[[Single Hung Windows|Single hung windows]] are similar to a double hung window but have only one moveable sash. As with the double hung windows the two sashes are offset but only the lower sash can move vertically within the window frame.   

[[Horizontal Sliding Windows|Horizontal sliding windows]] are also known as sliders, gliders and horizontal gliding windows. The sashes of the window slides open and closed horizontally. The window has two or more sashes which are mounted and installed on parallel rails within the window's frame. They are a moderately-priced operational window option.

[[Casement Windows|Casement windows]] involve a single sash or side-by-side sashes which are attached to the window frame.The hinges are located along the window's horizontal side. Casement windows can be attached as [[Inswing-Windows|inswing]] or [[Outswing-Windows|outswing]] windows, depending on the location of the hinges.  

[[Mullion Windows|Mullion windows]] are windows which are installed alongside the mullion -- a vertical frame member that separates two sashes of an inswing or outswing window. Casement windows with mullions operate as either crank-out or push-out windows.

[[Awning Windows|Awning windows]] and [[Hopper Windows|Hopper windows]] are similar to casement windows since the window sash is attached to the window frame with hinges. Awning windows are attached by hinges which are located on the window sash's top frame while hopper windows are attached by hinges which are located on the window sash's bottom frame. Awning and hopper windows may be installed as inswing or outswing sashes.  

[[Folding Windows|Folding windows]] open and close in an accordion style. These windows, also called bi-fold windows, accordion windows or concertina windows are designed for large openings. Folding windows are created by a bank of windows which are hinged together. They have wheels which roll the window panels along the top or bottom track to operate the window. The window opens, accordion-style, as an entire unit and closes by folding together at the end of the row into a single panel.  

[[Egress Emergency Exit Windows|Egress emergency exit windows]] are built to satisfy local code requirements which require that all bedroom areas have access to a door or to a window that can function as a door. Replacement egress windows are generally installed in [[Attic Windows|attics]] and [[Basement Windows|basements]]. They include horizontal sliding windows and casement windows which open easily and can be installed at a low enough level to allow for easy exit in case of an emergency.   

[[Jalouise Windows|Jalouise windows]], also known as louvre windows, are made with large movable horizontal slats/louvers. These louvers are built into the window frame and resemble overbuilt blinds. The slats separate when the window is open. They rest against each other when the window is closed. Modern jalousie windows have thin profiles which compliment any home design.

[[Garden Windows|Garden windows]] are frequently installed in a garden room or in a kitchen as a window area in which it is possible to place plants for sunlight and display. This window is designed as a 3-D window in which the side panels are non-operating panes and the front panel shifts in and out on sliding hinges to operate the window. The bottom of the garden window is made of moisture-resistant material and can be removed to easily clean the area.   

[[Tilt Turn Windows|Tilt-turn windows]] present dual functionality. The sash of a replacement tilt-turn window opens either by tilting inward or by turning inward for flexibility in ventilation. The tilt-turn window sash can tilt open into a room to provide full venting and a clear view or can turn inward to enable venting through the window's top. Tilt-turn window sashes attach to the frame with multi-functional hardware that enables the window to operate by either tilting inward or turning completely open, left or right.  

[[Tilt Slide Windows|Tilt-slide windows]] operate in multiple ways for flexibility in cleaning, venting and use as an egress window. A tilt-slide window sash can tilt inwards into the room or slide open as a moveable panel slides behind a fixed panel. These alternative operating modes allow homeowners to tilt the window sash inwards for easy cleaning and to draw in air. Open venting is facilitated when the sliding portion of the window slides open to the left or right.

[[Clerestory Windows|Clerestory windows]] are rectangular-shaped windows which are installed below the ceiling of a room, either as a single row of windows or above other windows or doors. They are placed above eye level and may be operable or non-operable windows. Operable clerestory windows allow additional ventilation into a room and all clerestory windows allow additional light into a room.

[[Dormer Windows|Dormer windows]] are included as part of a dormer architectural structure. Dormer windows are set in a dormer unit which has an independent roof structure which juts out from the main roof of the house. Dormer replacement windows are the focal point of the dormer formation which protrudes from the plane of a sloping roof surface. The dormers occupy less than a half of the roof space. Dormer windows are generally smaller than the windows below. The window incorporates the features of the dormer structure and provide venting for the room to ensure that the dormer room can be utilized as living space within the roof of a building.

[[Special Shape Windows|Special shape windows]] involve windows with curves and/or angles to produce a unique geometric shape. Most special shape windows are non-operating windows though in specific cases some special shape windows may operate. Special shape windows include ellipticals, eyebrows, full arch heads, full cords, full circles, half cords, half circles, octagons, partial arch heads, half ellipticals, pentagons, quarter circles, partial chords, trapezoids, springlines, Isosceles triangles and right triangles as well as other special geometric shaped windows. The windows may be specially ordered in sizes of up to six feet tall. Special shape windows may be installed singly or in conjunction with other windows.  

[[Transom Windows|Transom windows]] are relatively small windows that are installed over doors or atop other windows. They are often installed in spaces where a door or window meets another architectural element and function as a conduit between the door or the window below and the ceiling or eaves above. Transom windows are often included in a window design to add height and style to an opening.

[[Storefront Windows|Storefront windows]] are window styles which are frequently used in commercial applications. They are generally combined with an entrance and display a store's wares. The vertical span of a storefront window is generally limited to a single story in height though some may span more than one story.  

[[Gable Windows|Gable windows]] are installed in the triangular portion of a wall between the edges of a sloping gable roof. The details of the gable window design and the exact shape of the gable window will depend on the roof's structural system as well as the aesthetic implications of the window's inclusion in the design. The shape of replacement gable windows can be dictated by the type of roof which encloses the window. Alternately, a gable window whose shape compliments the gable roof space can be installed. Gable windows blend into the design of a gable roof to present a unified architectural design for any room in any floor of a home.

[[Roof Windows|Roof windows]] are installed within a sloping roof. Most roof windows are non-operable but operable roof window alternatives are also available which may open and close using a pivot mechanism or with opening hinges that are attached to the top of the window sash. Roof windows are often added to applications which, otherwise, would not receive enough light. They are larger than skylights and can retract a portion of the panes to increase air flow.  

[[Roof Lantern Windows|Roof lantern windows]], also called cupola windows, are installed in flat roofs to add light and a transformative look to the room below. A roof lantern window may cover the entire roof area or may be installed in one specific section of a roof. Roof replacement windows may be comprised of any number of glazing panels to offer a range of design options for the roof window design.  

[[Skylight Windows|Skylight windows]] are installed in a sloping roof with a slope of less than 15 degrees or, alternately, in a flat roof. Vertical skylight windows are installed on, in or parallel to walls while flat skylights are installed on, in or parallel to the roof. Skylights provide an unimpeded view of the sky and increase a room's daylighting.

[[Round Circle Windows|Round circle windows]], also called round top windows are round or oval shaped windows which are installed in conjunction with other windows as part of a window grouping or as a separate window, often in an attic, loft or gable. They are available as 360 degree round or oval window units and frequently include decorative etchings such as floral designs. Round circle windows are generally non-operating windows but may sometimes be available as an operable window selection.  

[[Oriel Windows|Oriel windows]] are banks of windows which are designed in a semi-circle, similar to a bow or bay window. The unit may include three, four, five or more window sections. The oriel window is supported by a bracket or a corbel -- also called an “oriel” as it projects outward from the wall but does not extend to the ground, thereby increasing space by extending the window area outward. Oriel windows are frequently included in Gothic Revival style homes.  

[[Fixed Frame Windows|Fixed frame windows]] are available in a wide variety of shapes and sizes. A fixed frame window, also called a "[[Picture-Windows|picture window]]" enables a homeowner to increase daylighting into a room area. Fixed frame windows do not include operating hardware and are suitable for a room which needs additional light but does not require the added ventilation that an operating window would provide.

[[Block Glass Windows|Block glass windows]] are assembled using blocks of cloudy or patterned privacy glass or using cubes of cloudy glass. They are often used for [[Bathroom Windows|bathrooms]] and other applications in which the homeowner wants to create a  screen while allowing in light.  

[[Arch Windows|Arch windows]], also called a radius windows, are separate window units which sit above an existing window, generally a double-hung, casement, block-glass, bow, bay or a special shape window. They are generally stationary and are frequently installed framing to frame an operating window so as to ensure proper air circulation. Arch windows may also be installed over doorways. They are shaped in an arch shape -- the degree of the arch is dependent on the homeowner's preference and the window opening option. They may be used as transom windows.  

[[Multi-Lit-Windows|Multi-lit windows]] are created by arranging glass panes into panels or grid formations. The panes are separated by glazing bars of lead or wood and frequently appear as a decorative glazing pattern.