The Difference Between Window Mullions and Muntins

When it comes to window components, the terms mullions and muntins are often used interchangeably. In reality, these two have different meanings. Read on as Howard Roofing & Home Improvements, one of the top window and roofing companies in St. Louis, MO, explains the difference between window mullions and muntins. 

Window Mullions

Window mullions are generally the single vertical bars that separate two sides of a single window. They are often heavier elements that divide larger window frames horizontally or vertically. In some homes, they can appear to create two windows where there is just one. 

Furthermore, window mullions have numerous purposes. Because they can divide a stationary and a movable set of windows, you can easily allow fresh outdoor air into your home. Not only that, but window mullions can also add depth to withstand wind loads. This is especially important for homeowners who live in hurricane-prone climates. 

Window Muntins

Although they’re often associated with windows, muntins can also refer to any kind of vertical divider, from wood panels to doors. Early window builders used muntins, not for their appearance but because they were structurally required. Centuries ago, the outer walls of buildings were unable to carry the weight when large windows were installed. The presence of muntins allowed for the weight to be transmitted vertically. 

Moreover, window muntins are traditionally made of wood, but some are made of steel. Although they are usually seen on traditional windows, they are versatile enough to be used in any architectural home style. Window muntins also provide a sense of comfort to a residential home. Meanwhile, most window panes without muntins are reserved for building spaces or store display windows. 

Whether you need window or roof installation services, you can trust the professionals of Howard Roofing & Home Improvements. We provide top-quality exterior renovation services in and around St. Louis, MO. Call us today at (636) 296-1057 or fill out our online contact form to request a free quote.