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Window Glossary & Information

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Window Glossary

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AAMA: American Architectural Manufacturers Association.  A national trade association that establishes voluntary standards for the window, door, storefront, curtain wall and skylight industries.

Absorptance: The ratio of radiant energy absorbed to total incident radiant energy in a glazing system.

Acrylic: A thermoplastic with good weather resistance, shatter resistance, and optical clarity, used for glazing.

Aerogel: A microporous, transparent silicate foam used as a glazing cavity fill material, offering possible U-values below 0.10 BTU/(h-sq ft-° F) or 0.56 W/(sq m-& C)

Air Infiltration:  The amount of air leaking into and out of a building through cracks in the walls, windows and doors.

Air Leakage Rating: A measure of the rate of air-leakage around a window, door, or skylight in the presence of a specific pressure difference. It is expressed in units of cubic feet per minute per square foot of frame area (cfm/sq ft). Formerly expressed as cubic feet per minute per foot of window perimeter length (cfm/ft) but not now in use. The lower a window's air-leakage rate, the better its air tightness.

Annealed Glass:  Regular glass which has not been heat strengthened or tempered.

ANSI: American National Standards Institute. Clearing house for all types of standards and specification.

Argon Gas: An inert, nontoxic gas used in insulating glass units to reduce heat transfer.

ASHRAE: American Society for Testing and Materials. Organization that sets standards for testing of materials.

ASTM: American Society for Testing and Materials - a voluntary organization concerned with development of consensus standards, testing procedures and specifications.

Awning Window: A window that is hinged at the top and swings outward for ventilation.

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Balance Covers:  A snap in covering that conceals the EvenForce™ block and tackle balance system within the window frame, helping keep direct and dust out of the chamber.

Bay Window:  An angled combination of three windows that project out from the wall of the home. The windows are usually positioned at 30- or 45- degree angles.

Bead:  A wood strip against which a swinging sash closes, as in a casement window. Also , a finishing trim at the sides and top of the frame to hold the sash, as in a fixed sash or a double-hung window. Also referred to as a bead stop.

Beveled MasterFrame:  Some Alside windows feature a unique fusion-welded deign that accommodates differing installation methods and architectural styles. It is the angled portion of the masterframe profile that adds a three dimensional appearance to the exterior of the window. 

Block and Tackle Balance System: The block and tackle system utilizes a high-density nylon cord pulley action which is attached to a moveable block that travels up and down within a metal chamber. Tension from a heavy duty coil spring at the top of the block creates the proper resistance necessary for smooth operation of the window sash.

BOCA: Building Officials and Code Administrators.

Bottom Rail: The bottom horizontal member of a window sash.

Bow Window: An angled combination of windows in 3-,4- or 5-lite configurations. As the windows are joined to each other, they combine to form an arch shape that projects from the wall of the home.

Brick Molding: A standard milled wood trim piece that covers the gap between the window frame and masonry.

BTU: An abbreviation for British Thermal Unit, the heat required to increase the temperature of one pound of water one degree fahrenheit.

Butyl: A rubber material that seals the glass to the spacer, creating an airtight and water-tight insulated glass unit.


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Cam Action Lock and Keeper:  The mechanisms, which pull and secure the sashes together when placed in the locked position.

Casement Window: A window with a side hinged sash that opens and closes outward by a crank handle mechanism. Available in continuous mainframe, with multi-lite configurations.

Casing: Exposed molding or framing around a window or door, on either the inside or outside, to cover the space between the frame or jamb and the wall.

Caulking: a mastic compound for filling joints and sealing cracks to prevent leakage of water and air, commonly made of silicone, bituminous, acrylic, or rubber-based material.

Check Rail:  The bottom horizontal member of the upper sash and the top horizontal member of the lower sash which meet at the middle of a double-hung window.

ClarityOne Glass:  A chemical treatment that when applied to glass, helps to create a smoother surface that won't attract or hold dirt and dust. Established by PPG Industries.

Clerestory:  A window in the upper part of a lofty room that emits light to the center of the room.

ClimaTech®: The brand name for the insulated glass unit that is present in Alside's insulating glass packages. A ClimaTech unit will contain either two or three panes of glass, with one or two of those panes being a Low E surface. It will utilize the SST warm edge spacer system and contain wither argon or krypton gas.

Composite Frame: A frame consisting of two or more materials, for example, an interior wood element and an exterior fiberglass element.

Condensation:  The deposit of water vapor from the air on any cold surface whose temperature is below the dew point, such as a cold window glass or frame that is exposed to humid indoor air.

Conduction: Heat transfer through a solid material by contact of one molecule to the next. Heat flows from a higher-temperature to a lower temperature one.

Convection: A heat transfer process involving motion in a fluid (such as air) caused by the difference in density of the fluid and the action of gravity.  Convection affects heat transfer from teh glass surface to room air, and between two panes of glass.

Coved Glazing Beads: A contoured piece of vinyl that holds the glass in place within the sash and adds an elegant finished look.

CRF:  Condensation Resistance Factor.  An indication of a window's ability to resist condensation. The higher teh CRF, the less likely condensation is to occur.

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Degree Day: A unit that represent a one-degree Fahrenheit deviation from some fixed reference point (usually 65° F) in the mean, daily outdoor temperature. See also heating degree day.

Desiccant: An extremely porous crystalline substance used to absorb moisture from within the sealed air space of an insulating glass unit.

Dewpoint: The temperature at which water vapor in air will condense at a given state of humidity and pressure.

Double Channel Lintel: A siding accessory that joins two soffit panels.

Double Glazing:  In general, two thicknesses of glass separated by an air space within an opening to improve insulation against heat transfer and/or sound transmission. In factory-made double glazing units, the air between the glass sheets is thoroughly dried and the space is sealed airtight, eliminating possible condensation and providing superior insulating properties.

Double Hung Window: A window that has two vertical operating sashes.

Double-strength Glass: Sheet glass between 0.115" and 0.133" (2.92-3.39 mm) thick.

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dge Effects: Two-dimensional heat transfer at the edge of a glazing unit due to the thermal properties of spacers and sealants.

E-Gard®:  Brand name for specially coated operating hardware that helps resist oxidation and corrosion. 

Egress Code: The minimum opening of a window for people to exit or firefighters to enter a building/dwelling. Varies by states/regions.

Electromagnetic Spectrum:  Radiant energy over a broad range of wavelengths. 

Emittance: The ratio of the radiant flux emitted by a specimen to that emitted by a blackbody at the same temperature and under the same conditions.

ENERGY STAR®:  The ENERGY STAR program is a joint venture between the US Environmental Protection Agency (EPA) and the US Department of Energy (DOE) designed to encourage homeowners to purchase energy-efficient products. Using less energy in our homes reduces the amount of CO2 emissions released into the atmosphere from burning fossil fuels such as coal, oil and natural gas. The advanced components and design in the the ClimaTech™ insulated glass package exceed all performance criteria required by the ENERGY STAR program.

Evacuated Glazing: Insulating glazing composed of two glass layers, hermetically sealed at the edges, with a vacuum between to eliminate convection and conduction. A spacer system is needed to keep the panes from touching.

EvenForce™: Alside's brand name for its block and tackle balance system, a device for holding the vertically sliding sashes in any desired position within the window mainframe.

Exterior Stop:  The removable glazing bead that holds the glass or panel in place when it is on the exterior side of the light or panel, in contrast to an interior stop located on the interior side of the glass.

Extrusion: The process of producing vinyl or aluminum shapes by forcing heated material through an orifice in a die. Also any item made by this process.


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Fanlight:  A half-circle window over a door or window, with radiating bars. Also called a circle top transom.

Fenestration: The placement of window openings in a building wall, one of the important elements in controlling the exterior appearance of a building.  Also, a window, door, or skylight and its associated interior or exterior elements such as shades or blinds.

Fiberglass: A composite material made by embedding glass fibers in a polymer matrix. May be used as a diffusing material in sheet form, or as a standard sash and frame element.

Fixed Lite: A pane of glass installed directly into non-operating framing members; also the opening or space for a pane of glass in a non-operating frame.

Fixed Panel: An inoperable panel of a sliding glass door or slider window.

Fixed Window: A window with no operating sash.

Flashing: A thin, flat material, usually aluminum, positioned under or or behind j-channels, corner posts, windows, etc., to keep draining water from penetrating the home.

Float Glass:  Glass formed by a process of floating the material on a bed of molten metal. It produces a high-optical quality glass with parallel surfaces without polishing and grinding.

Fogging: A deposit of contamination left on the inside surface of a sealed insulating glass unit due to extremes of temperature or failed seals.

Frame:  The fixed frame of a window which holds the sash or casement as well as hardware.

Fusion-Welded:  The process of joining materials by melting them together with extreme heat (in most cases over 500° F) resulting in the materials combining into a one-piece unit.

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Garden Window: Designed much like a bay window, a garden also extends from the wall to the exterior of the home. It is built in a square or rectangular shape at right angles. The two sides lights often operate for added ventilation.

Gas Fill:: A gas other than air, usually argon or krypton, placed between window or skylight glazing panes to reduce the U-factor by suppressing conduction and conviction.

Glazing:  The glass or plastic panes in a window, door or skylight.

Glazing Bead:  A molding or stop around the inside of a window frame to hold the glass in place.

Grids: Operational horizontal or vertical lineals installed between the glass panes help to create the appearance of a divided window design.

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Header:  The upper horizontal member of a window frame, also called a head.

Heat Gain:  The transfer of heat from outside to inside by means of conduction, convection, and radiation through all surfaces of a house.

Heat Loss:  The transfer of heat from inside to outside by means of conduction, convection, and radiation through all surfaces of a house.

Heat-Strengthened Glass: Glass that is reheated, after forming, to just below melting point, and then cooled, forming a compressed surface that increases its strength beyond that of typical annealed glass.

Hinged Windows:  Windows (casement, awning, and hopper) with an operating sash that has hinges on one side.

Hopper Window: A bottom-hinged sash window that opens inward for ventilation.

Horizontal Slider:  A window with a movable panel that slides horizontally.

Hybrid Tubular Daylighting Device (HTDD):  A tubular daylighting device (TDD) whose light transmitting tube consists of more than one material and/or has more than one geometry throughout its length.  Typically used with a suspended ceiling or to illuminate spaces without ceilings.

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ICC: International Code Council, A national organization that publishes model codes for adoption by states and other agencies. Codes include the International Building Code (IBC) and the International Energy Conservation Code (IECC).

IECC: International Energy Conservation Code published by the ICC. The successor to the Model Energy Code, which is cited in the 1992 U.S. Energy Policy Act (EPAct) as the baseline for residential Energy Codes in the United States.

Insulating Air Chambers: Various Chambers within the sash and masterframe, which help to insulate and strengthen the window.

Insulating Glass: Two or more pieces of glass spaced apart and hermetically sealed to form a single glazed unit with one or more air spaces between. Also called double glazing.

IntegraWeld:  The fusion-welding process of some Alside windows.

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Jalousie: Window made up of horizontally-mounted louvered glass slats that abut each other tightly when closed and rotate outward when cranked open.

Jamb: A vertical member at the side of a window frame or the horizontal member at the top of the window frame, as in head jamb. 

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Krypton Gas: An inert, nontoxic, gas used in insulating windows to reduce heat transfer.

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Laminated Glass: Two or more sheets of glass with an inner layer of transparent plastic to which the glass adheres if broken. Used for safety glazing and sound reduction.

Light (Lite): A window, a pane of glass within a window. Double-hung windows are designed by the number of lights in the upper and lower sash, as in six-over-six. Also spelled Lite.

Light-To-Solar-Gain Ratio: A measure of the ability of a glazing to provide light without excessive solar heat gain. It is the ratio between the visible transmittance of a glazing and its solar heat gain coefficient. Abbreviated LSG.

Lift Handle: Used for raising the lower sash in a double-hung window. Also called a sash lift.

Lintel: A horizontal member above a window or door opening that supports the structure above.

Lite: A unit of glass in a window.

Long-Wave Infrared Radiation: Invisible radiation, beyond red light on the electromagnetic spectrum (above 3.5 micro meters), emitted by warm surfaces such as a body at room temperature radiating to a cold window surface.

Low-Conductance Spacers: An assembly of materials designed to reduce heat transfer at the edge of an insulating window. Spacers are placed between the panes of glass in a double or triple glazed window.

Low E (emissivity) Glass:  microscopically thin, virtually invisible, metal or metallic oxide layers deposited on a window or skylight glazing surface primarily to reduce the U-factor by suppressing radiative heat flow. A typical type of low-E coating is transparent tot he solar spectrum (visible light and short-wave infrared radiation) and reflective of long-wave infrared radiation.

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MasterFrame: The combination of the head, sill and jamb sections of a window.

Meeting Rail: The part of a sliding glass door, a sliding window, or a hung window where two panels meet and create a weather barrier.

Micron: One millionth (10‾6 ) of a metric meter.

Mil.: One thousandth of an inch, or 0.0254 millimeter.

Molded Energy Code (MEC): The Model Energy Code is cited in the 1992 U.S. Energy Policy Act (EPAct) as the baseline for residential Energy Codes in the United States. It has been succeeded by the International Energy Conservation Code (IECC) published by the International Code Council (ICC).

Mylar:  A weather-stripping material that is present where the sash frame meets the masterframe. Adds increased resistance to air infiltration.

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NFRC: National Fenestration Rating Council.

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Obscure Glass: Glass that has made translucent instead of transparent. 

Origin II™: The virgin PVC vinyl used in all Alside windows. The material's low thermal conductivity makes it the best choice for window manufacturing. Will not rot, peel, blister, swell or deteriorate from corrosion or pitting.

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Panel: A major component of a sliding glass door, consisting of a light of glass in a frame installed wit hin the main (or outer) frame of the door. A panel may be sliding or fixed.

Picture Window: A picture window that does not move or operate.

Plumb: A position or measurement that is truly and exactly vertical 90° from a level surface.

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R-Value:  A measure of the resistance of a glazing material or fenestration assembly to heat flow. It is the inverse of the U-factor (R=1/U) and is expressed in units of hr-sq-ft-°F/Btu. A high R-value window has a greater resistance to heat flow and a higher insulating value than one with a low R-value.

Radiation: The transfer of heat in the form of electromagnetic waves from one separate surface to another. Energy from the sun reaches the earth by radiation and a person's body can lose heat to a cold window or skylight surface in a similar way.

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Sash: Separate from the masterframe, the portion of the window that contains the glass.

Sash Limit Locks: A feature that allows a window to be safely raised to a certain height.

Screen: Woven mesh of metal, plastic, or fiberglass stretched over a window or door opening to permit air to pass through, but not insects.

Sealant: A compressible plastic material used to seal any opening or junction of two parts, such as between the glass and a metal sash, commonly made of silicone, butyl tape, or polysulfide.

Shade Screen: A specially fabricated screen of sheet material with small narrow louvers formed in place to intercept solar radiation striking the glass; the louvers are so small that only extremely small insects can pass through. Also called a sunscreen. Also, an awning with fixed louvers of metal or wood.

Shading Coefficient (SC):  A measure of the ability of a glass unit to transmit solar heat, relative to that ability for 1/8-inch clear, double-strength single glass. It is being phased out in favor of the solar heat gain coefficient and is approximately equal to the SHGC multiplied by 1.15. It is expressed as a number without units between 0 and 1. The lower a window's solar heat gain coefficient or shading coefficient, the less solar heat it transmits, and the greater its shading ability.

Short-Wave Infrared Radiation: Invisible radiation, just beyond red light on the electromagnetic spectrum (bewteen0.7 and 2.5 microns), emitted by hot surfaces and included in solar radiation.

Sill: The horizontal bottom section of the masterframe.

Sliding Window: A window in which the sashes move horizontally. Available in a 2- or 3-lite configuration.

Simulated Divide Lights: A glass unit that has the appearance of a number of a number of smaller panes of glass separated by muntins, but actually is a larger glazing unit with the muntins placed between or on the surfaces of the glass layers.

Solar Control Coatings: Thin film coatings on glass or plastic that absorb or reflect solar energy, thereby reducing solar gain.

Solar Heat Gain Coefficient (SHGC): The fraction of solar radiation admitted through a window or skylight, both directly transmitted and absorbed and subsequently released inward.  The solar heat gain coefficient has replaced the shading coefficient as the standard indicator of a window's shading ability. It is expressed as a number between 0 and 1. The lower a window's solar heat gain coefficient, the less solar heat it transmits and the greater its shading ability.  SHGC can be expressed in terms of the glass alone or can refer to the entire window assembly.

Solar Radiation: The total radiant energy from the sun, including ultraviolet and infrared wave lengths as well as visible light.

Solar Screen: A sun shading device, such as screens, panels, louvers, or blinds that are installed to intercept solar radiation.

Solar Spectrum: The intensity variation of sunlight across its spectral range.

Sound Transmission Class (STC): The sound  transmission loss rating of a material over a selected range of sound frequencies. The higher the number, the less sound transmitted.

Spacer: An object placed between two or more pieces of glass which helps to maintain a uniform width between the glass and prevent sealant distortion.

Spectrally Low-E: Glazing that is transparent to some wavelengths of the solar spectrum and reflective to others. Typical spectrally selective coatings are transparent to visible light and reflect short-wave and long-wave infrared as well as U V radiation. Spectrally selectivity can be achieved with low-E coatings and/or high performance tints.

SST Non-Metal Spacer:  A  solid silicone foam spacer covered with Mylar. It is sealed to the edge of the glass and then sealed with butyl for greater energy efficiency.

STC: Abbreviation for Sound Transmission Coefficient. A value which describes in relative terms the ability of a door to dampen the passage of noise. Doors with higher STC values permit less noise to pass through.

Stile: The upright or vertical edges of a door, window or screen.

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Tempered Glass: Glass sheet which has been strengthened by heat processing. Tempered Glass when broken, shatters into small pieces without sharp edges. See Safety Glass.

Thermal Expansion: Change in dimension of a material as a result of temperature change.

Thermal Mass: Mass in a building (furnishings or structure) that is used to absorb solar gain during the day and release the heat as the space cools in the evening.

Thermochromics:  Glazing with optical properties that can change in response to temperature changes.

Thermogram: An image of an object taken with an infrared camera that shows surface temperature change.

Thermoplastic Elastomer (TPE):  Abbreviation for thermoplastic elastomer; a class of copolymer or a physical mix of polymers (usually a plastic and rubber) which consist of material with both thermoplastic and elastomeric properties. Generally low modulus, flexible materials that can be stretched repeatedly to at least twice their original length at room temperature with an ability to return to their approximate original length when stress is released. TPEs are used to make weather-stripping and gasketing parts.

Threshold: Another term for sill - the horizontal part of a door assembly, fixed under the door panel and bearing on the floor.

Transmittance: The percentage of radiation that can pass through glazing. Transmittance can be defined for different types of light and energy, e.g., visible light transmittance, UV transmittance, or total solar energy transmittance.

Transom: A framed glass assembly mounted atop a door assembly. Transom are rectangular in shape or have curved or arched tops. One design of a curved top transom has the shape of a half-ellipse.

Triple-Glazed: An insulated glass assembly made of three thicknesses of glass, with air spaces between the outer and inner thickness.

TrueCapture™ Sloped Sill: The sill of some Alside double-hung windows that has a downward slope toward the outside with a capture dam that helps to keep water from infiltrating the base of the bottom sash. Sloped sill assists water drainage to the exterior of the window.

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UBC: Uniform Building Code.

UV (Ultraviolet light):  The invisible rays of the spectrum that are outside of the visible spectrum at its short-wave length violet end. Ultraviolet rays are found in everyday sunlight and can cause fading of paint finishes, carpets and fabrics.

UV Reflection:  The percentage of ultraviolet rays being blocked rather than being transmitted through the window's glass unit. The higher the number, the lower the percentage of ultraviolet rays being transmitted through the window.

U-Value:  A measure of the rate of non-solar heat loss or gain through a material of assembly. It is expressed in units of BTU/hr-sq ft-°F (W/sq m-°C) Values are normally given for NFRC/ASHRAE winter conditions of 0°F (18°C) outdoor temperature, 70° F(21° C) indoor temperature, 15 mph wind and no solar load. The U-factor may be expressed for the glass alone or the entire assembly, which includes the effect of the frame and spacer materials. The lower the U-Factor, the greater a unit's resistance to heat flow and the better its insulating value.


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Visible Light: The portion of the electromagnetic spectrum that produces light that can be seen. Wavelengths range from 380 to 720 nanometers.

Visible transmittance (VT): The percentage or fraction of the visible spectrum (380 to 720 nanometers) weighted by the sensitivity of the eye that is transmitted through the glazing.

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Warm Edge Technology: The use of low-conductance spacers to reduce heat transfer near the edge of insulated glazing.

Weatherstripping: Material used to form a weather-resistant seal around operable sash.

Window Hardware: Various devices and mechanisms for the window including catches, fasteners and locks, hinge, pivots, lifts and pulls, pulleys and sash weights, sash balances, and stays.


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Zincalume: Steel sheeting that is protected against corrosion by an aluminum-zinc coating.

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Windows 101

Windows do much more than add visual appeal to your home or allow fresh air into it. 

With so many options available these days, technology has truly improved the efficiency of windows.  Low-E coatings, gas fills, high performance framing, glazing spacer systems all combine to provide whole window energy saving options, making your home more energy efficient, reducing the cost of living comfortably, and helping the environment.

Choosing Iossi for your window needs is a smart decision because all Iossi windows offer you benefits that have been researched and tested in order to ensure your investment was the right one, as well as having lower maintenance requirements.

Some of the technologies that make a window more efficient include:

  • Gas Fills; that improve the thermal performance of insulating glazing units by reducing conductance of the air space between the layers.
  • Spacers: Warm edge spacers hold the layers of glazing apart with the precision required to increase efficiency.
  • Glazing: Advanced technologies have improved the thermal performance of glass while maintaining the clear view of simple glasses.
  • Frames: with newer materials that govern the physical characteristics of the window, such as thickness, weight and durability, today's frames are not only beautiful, but also more efficient at working in tangent with the glass units.
  • Operator Types: Whether the window is projected or hinged, like casement, awning, hopper, sliders, single or double-hung, choosing the right window for your home to achieve your vision and keep your home efficient, Iossi can help guide you in making the right selections.

How can your windows have such a large impact on your home's efficiency?

  • By reducing the rate of heat loss (U-factor) during cold months you can reduce your heating bills.
  • By reducing the amount of heat and solar radiation that enters your home during warmer seasons, you can lower you cooling costs as well as saving on costly repairs and replacements of items like carpeting and drapery, or painted furniture.
  • The amount of visible light that enters your home can help reduce the need for additional electrical lighting.
  • Condensation factors that uncontrolled can create damage over time to your home's walls, ceiling, roofing, etc., are addressed with today's technologies.
  • Ratings by the NFRC and ENERGY STAR help assure you that the products you are investing in have met the criteria for performance.

You want windows that are beautiful and energy efficient, but you also want proper installation and a good warranty - which can depend on that proper installation.  Iossi offers you it all.

Contact us to schedule a time that is convenient for you, to discuss how replacing your windows can be a wise and satisfying decision.

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Window Care & Maintenance

Care and Cleaning of your windows is simple. 

Label and tape adhesive should be removed by alcohol based cleaners on small glass areas only.  After this is removed, thoroughly wet the glass and rinse with plain water.

Glass can be cleaned with regular or ammonia based glass cleaners.

Vinyl (PVC) products can be cleaned with a solution of mild soap and water. For heavier cleaning tasks, the window manufacturer recommends commercially advertised household cleaners. Use any NON-abrasive cleaner for tough jobs. Do NOT use solvents, paint removers or sharp objects to clean your windows and patio doors.

Condensation is caused by excess interior relative humidity in the home.  It is your responsibility to control your home's relative humidity.

If mildew is a problem in your area, use an appropriate cleaner or mildew controller found in your local stores.

Painting or varnishing your window is not required and will void the warranty.

The tracks of the double-hung and sliding windows are exposed to the outdoor elements, which can contain abrasive elements such as dirt, leaves, sand, grease, soot, etc.  If these elements are not removed, they can be ground into the vinyl tracks when the sashes are operated. A minimum semi-annual cleaning is recommended.  These tracks can be cleaned with a small, stiff nylon brush, then wiped down with a soft cloth. If necessary an occasional light coat of silicone spray lubricant on the balance show track of a double-hung, and the tracks of a sliding window can help ease the operation without leaving an oily residue which can collect additional abrasive elements.

Follow the manufacturer's recommendations for safe use of any chemical or cleaner.  Any cleaning information suggested here is only to assist you.  Iossi and the window manufacturer assume no responsibility for the results obtained which are dependent on the chemical solutions as prepared, and the quantity and method of application.

Following are operation/care and maintenance images to help guide you.

casement care and maintenance doublehung care and maintenance

sliding care and maintenence


Screens can be cleaned easily with a soft brush accesory from a vacuum cleaner. If a more thorough cleaning is desired and the screens need to be removed, follow these steps:


  • From the interior, raise both sashes to their highest position.
  • Raise the screen up to a point where you can get your hand on the lower sluminum frame section.
  • Push the screen to the left side of the window. The screen has sp rings on this side.
  • Once the screen is positioned as far left as possible, gentl push the ri ght side of the screen toward the exterior.
  • Once the right side is disengaged from the screen track, remove it from the left side as well.

To replace the screen to its tracks, follow these steps:

  • The springs should be postitioned on the left. Place the springs in the left screen track.
  • Push the screen as far left as possible.
  • Pull the right side in, center it in the right screen track, and reengage it in that track.


  • Pull up on the aluminum screen track bottom, placing it all the way up into the top screen track.
  • Push out the bottom to clear the screen from the bottom screen track and disengage the screen at the top.

To replace the screen, reverse the above steps.


  • Open the top and bottom sash for improved ventilation.
  • Use both hands to support sashes while tilting them in to clean.
  • Support the sashes when they are in the cleaning position.
  • Make sure the tilt latches are fully engaged after tilting sashes back into the operating position.
  • Make sure the top sash on a double-hung window is closed and up all the way before locking the window.


  • Leave the lock in the locked position when closing the window, this will damage the keeper.
  • Attempt to remove the sashes on double-hung windows.
  • Use oil based spray lubricants such as WD40, they attract dirt. Use a silicone spray for lubrication.
  • Leave the center section of a "Swing &Clean" sliding window open without proper support.
  • Attempt to remove a "Swing &Clean" sliding window sash when the pivot hardware is locked.
  • Use abrasive-type cleaners to clean the glass or vinyl on the windows.
  • Use solvents to clean the windows.
  • Use the crank on a casement window without unlocking the window first.
  • Use a high pressure hose to clean the outside of a window.
  • Install a window air conditioner in a vinyl window without adequate support.
  • Paint or varnish vinyl windows.

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Our Thoughts

We earn our customers trust, it is part of what has kept us a successful business for so many years.  We know the area and we offer products and services that have proven to provide excellent results. 

Contact Us

4374 State Street
Bettendorf, Iowa 52722


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Other times available by appointment