Technically, a window sill only exists on the exterior of a house or apartment. In architectural terms, the portion of the ledge that is on the inside is called a window stool.
But, many people use the term window sill” to describe both the exterior and interior parts. It’s a mandatory component of the window frame, in large part because it protects the inside of your home from moisture.
Protecting against water intrusion is arguably the most important function of a window sill. Mold can build up, your drywall can rot, and in extreme cases, your home can suffer structural damage.
Even though most look like they sit perpendicular to the wall, they’re actually installed at a slight angle to prevent rain or snow from accumulating on top of it. If you’re having problems with standing water in your yard, you may want to consider installing a French drain or re-evaluating your drainage system.
In addition to all the practical benefits, windowsills add a beautiful touch to the outside of a house. They provide a place for plants, flower boxes, bird feeders, and seasonal decorations.
Inside, you can get creative by using your window sill as a bookshelf, a countertop, a seat, or a place for potted plants. Wood, plastic, marble, granite, and aluminum are all popular choices, and many of them come in a range of colors to match your aesthetic.
It’s not susceptible to water damage the way wood is, and it’s affordable, durable, and easy to take care of. Unlike other materials, aluminum doesn’t rust when exposed to harsh weather.
When rain falls on metal, it makes a loud sound that can be annoying for homeowners, especially if the window sill is right off a bedroom or living room. Whatever material you choose, you should perform regular maintenance to keep your window sill clean on the inside and out.
To clean your window sill, start by wiping it down with a cloth or stiff brush. Remove dirt, debris, and anything else that has been building up on the sill, such as leaves or lawn clippings.
Inside the home, the part of the window often called the “sill” is actually the stool. As a result, it can be hard to tell which part of the window a person is referring to when the sill is being discussed (1).
The rigid sill on the bottom helps eliminate flexing to support the structure Improved Energy Efficiency. Provides barrier for thermal insulation to be installed Water Protection.
Protects the wall and leads water away from the building when it rains and not into your home Decorative Space. Windowsills also play an important role in the functionality of the window.
It's important to have the right tools on hand and to follow the proper procedures (3). Wooden window sills must be painted or sealed in order to be weatherproof and durable.
Modern wooden window sills are typically clad with a durable waterproof material for easy maintenance and extra insulation. Stone window sills are completely durable and typically need no sealing or treatment in order to withstand the elements.
Tile sills are less common than wood or stone and are often found on older homes. Windowsills are typically not sculptured or decorated, but they can be made from many materials and can even be clad with aluminum or vinyl, depending on the type of window.
Customizations enable windowsills to match the style and grandeur of the home. This would cause the sill to rot quickly and would lead to leaks in the home.
If you're seeking more information about windowsills, talk to a Champion representative in your area. Windowsills serve to structurally support and hold the window in place.
In these cases, a strip of waterproof and weather resistant material (steel, vinyl, PVC) called a sill pan may be used to protect the wall and shed the water. A window sill may span the entire width of a wall from inside to outside, as is often the case in basic masonry construction, making it visible on both the interior and exterior of the building.
Conversely, a window sill may only extend from the internal wall structure to the outside and not be visible from the building's interior. In residential buildings, some people use this latter kind of interior window sill or stool to store houseplants, books, or other small personal items.
Wikimedia Commons has media related to Windowsills. A Dictionary of Architecture and Building: Biographical, Historical, and Descriptive.
The stool is the more visible piece of marble or stone attached to the window sill that you might sit your plants on. Sills are also used to catch any moisture in case the window be left open when it rains.
If you are looking for a manufacturer to supply window sill and thresholds for a large construction project, please contact us today. If you’ve ever watched a water drop travel down a wall or at an angle, then you know that it has the amazing ability to cling to one surface before succumbing to gravity.
In fact, water that’s sitting at a precipice can actually travel a short distance on the underside of the ledge. This creates a larger horizontal surface so that water drops will break free before they can migrate into the structure.
This is how builders protect the brickwork beneath a window from spelling, and it will also keep wood siding from rotting in this area. When you go with a stone window sill with a larger span, you can effectively protect your home from water and keep it looking great.
The sill only needs a minimal slope to encourage water to drain neatly away from the fixture. This allows you to achieve better acoustic and thermal insulation so that your home will be quieter and more energy efficient.
Even the most expensive window sill unit won’t perform its efficiency effectively if it’s not installed correctly. Be warned of any contractor who relies too heavily on expanding foams or sealants to get a window to fit well should as these materials aren’t waterproof and can lead to problems down the road.
Flashing and proper caulking may be the cheapest parts of window installation, but if they’re not done with an eye to detail, the ensuing water leaks will cause a barrage of problems that could have been easily prevented. In modern designs, many home builders are eliminating the decorative window sill.
If you’ve been feeling like your windows are missing something, it may be the traditional sill that protruded slightly into the room. Our stock Absolute Black Granite window sill are all six inches deep, so you can have the right protrusion inside and outside the home.
Once you make the decision to upgrade your projects with the actual window sill, you’ll need to choose the right material. Metal sills are available for exterior use, but people may not like the noise that results from every time it rains.
It may be faster to install basic double-hung windows that are finished out with a simple frame, but that’s not what your clients are looking for. Most people appreciate having the added storage space and architectural style that comes with the elegant window sill, and you can make a great impression by going with natural stone options.
We carry window sill in black granite, Carrera Marble, Cream Martin, Pure White, and Travertine. You can place your bulk order, the team at Stonehenge is looking forward to helping you, and you’re sure to be pleased with our quality options.
With our help, you can take your finishes to a higher level and ensure that your company’s name is synonymous with quality and elegance.