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Window Replacement Terms and Their Meanings

Window Replacement Terms and Their Meanings

by | Jul 29, 2022 | Replacement Doors, Replacement Windows | 0 comments

If you’re replacing a window or door in your home for something more suited to your style, it’s important to know the specifics of what you’re looking for. This is why knowing window replacement terms and their meanings can help you when working with a window replacement expert.

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How many window replacement terms do you know as a homeowner? Whether you’re installing a new window or door for energy efficiency or aesthetic preferences, you should see the window terminology, energy efficiency terms, and replacement door terms before settling on your decision. 

Window Replacement Terms

Single Glazing – A window with a singular pane of glass. 

Double Glazing – A window with two panes of glass separated by a gas-filled space, usually argon or krypton, for energy efficiency.

Triple Glazing – A window with three panes of glass, separated by a gas-filled space. These are typically used in colder climates for comfort in the home.

Head – The uppermost part of the window above the frame; comes in many decorative styles.

Jamb – The main inner structure of the window which sits inside the frame.

Frame – The outermost part of the window which holds the glass, made from materials such as aluminum, vinyl, clad wood, or composite.

Panes – The glass that sits inside the frame, allowing light to pass through and providing protection from extreme weather.

Sill – The lowest part of the window, underneath the frame. The window sill can be used for placing objects on.

Muntin Bars – Used in the past to hold multiple panes of glass together while keeping them separate. Nowadays used as a decorative option to give the illusion of multiple panes.

Sash – Movable panel within a single or double-hung window which holds one or more panes of glass.

Single Hung Window – A window with only a single sash that moves in either an up and down or tilting motion.

Double Hung Window – A window with two sashes, both of which move in either a tilting or up and down motion.

Bow Windows – Window set up using multiple single casement windows, similar to curved bay windows but forming a semi-circle.

Bay Windows – Window installed in an angled configuration with one casement window on the left, one on the right, and one or more in the middle. 

Awning Windows – A window that sways outwards from the frame with hinges just below the window head.

Fixed Frame Windows – A window with a single fixed frame and no opening portion.

Sliding Windows – A window that slides open from one side to the other on a set of rails. 

Energy Efficiency Terms

U-Factor – measures the heat transfer rate, giving you the window insulation.

Window R Value – rates the thermal resistance of the window (its ability to hold in heat).

Solar Heat Gain Coefficient (SHGC) – measures the amount of solar energy transmitted through the window.

Visible Transmittance (VT) – measures the amount of light allowed through the window.
Air Leakage (AL) – measures the rate at which air passes through the window joints and gaps.

Condensation Resistance – measures the window’s resistance to water build-up.

Replacement Door Terms

Door Panel – Holds in the glass and opens/closes on hinges. 

Door Frame – Part of the door which attaches to the wall. 

Sill – Part where the door meets the floor.

Multi-Point Locking System – Locks on multiple places of the door other than just the handle for added security.

French Door – Not always just a swinging door style; French doors have a wider vertical stile and taller rails at the top and bottom.

Decoding the Many Terms for Window & Door Replacement

Now that you have a better understanding of window replacement terms and door replacement terminology, you can rest assured that your new window or door installation will be exactly what you need for your home. Our expert team at Custom Windows of Texas will be happy to discuss these window terms with you to find the best fit!

Get in touch with us to learn more about window replacement terminology.

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