13+ Astonishingly Pretty Interior Window Trim Ideas to Set the Room

13  Astonishingly Pretty Interior Window Trim Ideas

In a room, windows are essential. They have a special place in the whole architectural system. Plus, windows also help define site connections and allow natural light to enter the spaces, and offer screen views.

When remodeling or designing an interior, it is important to consider how the window systems unite with the large structure.

You need to develop a clear logic describing how the windows are placed in walls. Hence, the trim.

A Trim is basically a standard vehicle for hiding joints when several materials come together, for example, the edges of Sheetrock. Moreover, trim could also set a building at a specific time.

Though trims are available in different designs, they provide you with the same functions.

Apart from its ability to hide joints and set a building, trim can also help prevent air leakages. They deliver the right frame to your room decor.

Window trimming is usually used for older houses because they are laid flat against the interior walls.

There are several designs for window trimming; here are some of them:

  1. Cove and bead casing: This is a traditional trimming design applying a one-piece outline for the edges and four pieces for the header. There is bead casting o the bottom and the top and one end trim.
  2. Colonial style casing: Like its name, this design is usually seen in Colonial houses. It consists of an essential single-piece baseboard with a back hand presenting a casing between the two design edges.
  3. Combination casing design: This design consists of back band fusion and single-piece baseboards. This design is perfect for houses that feature high ceilings or large-sized rooms.
  4. Victorian casing design: This design is considered more detailed than the other more traditional designs mentioned before. It includes back band casting and around casting with lumber.

Interior window trimming can be made of wood, metal, or stone when it comes to material. It can also be finished in many ways, depending on your preference.

Here are some pictures of pretty interior window trim ideas that will help you set your room perfectly.

1. Super Thin Interior Window Trim in a Dark Finish

super thin interior window trim in a dark finish
super thin interior window trim in a dark finish. image © pbwarchitects.com

This super-thin window trim is made of steel in a dark finish.

This type of trim is perfect for windows that most of their spaces are dominated by the view. Thus, the view outside won’t be blocked by the decorated trim. The dark finish of the frame recedes with narrow sight lines.

Basically, the idea of this trim is to support the window and, at the same time, surround it with minimal decoration.

It is enough to hide the fastening of the windows to the structure.

A minimal design like this complements the interior palette perfectly. It oscillates between the warm Douglas fir, stone and concrete, and the cool steel. Plus, the window trimming also highlights the wall plane’s thickness.

Ultra minimalist interior window trim with a dark finish is an excellent option for a modern or contemporary design. It is because, in a contemporary design, less is more. It creates a stylish and trendy look.

2. Natural Wood Extension Jamb with Outlining for Interior Window Trim

natural wood extension jamb with outlining for interior window trim
natural wood extension jamb with outlining for interior window trim. image © vandervort.com

An extension jamb is a part of the window frame extending to the full depth of the wall.

The most common treatment for the extension jamb is painting in the same color as the window surface or the wall.

In this picture, the architects have highlighted the wall depth and opening by picking the contrast natural wood with a clear finish.

This emphasizes the window as a whole different architectural element in the wall. Plus, having an extension jamb as a window trim also brings in a natural wood component.

Actually, there are several methods to achieve this design. The first one is returning the Sheetrock to the opening and applying the extension jamb at the top of the Sheetrock returns.

The second one is by reliving the trim board’s back edge to cover the gap between the window and the Sheetrock.

Both methods can give you a perfect traditional look while remaining stripped-down, clean, and modern.

The interior window trim in this picture trends to work well in complex spaces, where there are many eye-catching things in one place, like skylights, cabinetry, and the view.

The windows here fit into an element system that is made important by the treatment.

The windows and the cabinetry are made of the same material, a warm reddish wood. They also share a similar finely crafted detail.

3. Contemporary Interior Window Trim Idea with Subtle Difference Between Window and Wall

contemporary interior window trim idea with subtle difference between window and wall
contemporary interior window trim idea with subtle difference between window and wall. image © m-architecture.com

If you want to have a contemporary approach to your window trim, you can use a thin shadowed line that surrounds the window frame.

This type of window trim shows the difference between the wall and the window, but ever so subtly. This method is called reveals.

Reveals can be achieved by using different window trims at the sheetrock edges surrounding the window. These window trims have various widths.

Manufacturers like Trim-tex, Fry Reglet, and Pittcon are also fabricated from vinyl or metal.

The reveal method allows you to attain a planar look to the wall without an extra dimension of trim protruding outward.

This window trim is a perfect modern aesthetic style that nicely showcases the window frame as an opening without the stylized trim’s hang-ups.

The Sheetrock finish may be more expensive than this type of treatment, but it will give you a more perfect tailored modern look.

4. Drywall Returns Interior Window Trim for an Aesthetic Wall

drywall returns interior window trim for an aesthetic wall
drywall returns interior window trim for an aesthetic wall. image © houseandhouse.com

If your main aim so to call attention to the window frame or the opening itself, you should choose a drywall return as an interior window trim for a no-hassle way to frame your window.

This way, you can save more on finish carpentry and at the same time preserve the planar wall aesthetic without having to use reveal trims.

This method is usually used in commercial construction. It includes returning or wrapping the Sheetrock to the window frame at the window perimeter.

Drywall returns have a traditional look to the wood extension jamb, but they also deliver a clean and no-frills look.

Basically, drywall returns focus on the openings and the view perfectly, but it lacks any kind of detail, which may be inappropriate for some spaces.

In this picture, you can see that the architects make perfect sense in this minimalist, modern space that highlights the view.

5. Hybrid of Drywall Returns with a Deep Sill Interior Window Trim

hybrid of drywall returns with a deep sill interior window trim
hybrid of drywall returns with a deep sill interior window trim. image © baandesign.net

If you think the drywall return look is too plain and boring for you, you can consider using a deeper sill of contrasting stone or wood.

This will add shadow, color, and texture, and can be a perfect place to put some decorative items, plants, or personal items.

This bathroom features Sheetrock returns at the jambs and the head, but it also has a darker stained oak sill.

You will find an extra reveal detail between the wall beneath and the sill if you look closer. In this composition, shadow lines are important.

The reveals, dark sill line, thin mullions, and the shadows in the design above all are intentional and tightly controlled.

6. Textured Stone Interior Window Trim

textured stone interior window trim
textured stone interior window trim. image © rockefellerkempel.com

In this picture, the stone extension jamb creates a perfect reading alcove.

The architects used a honed stone to line the incised window opening, highlighting the solidity of the stone mass to form the wall and the depth.

There is a break in the textured stone surface here as the effect, but there is a reason behind it.

It looks that the incision was created carefully for this purpose only, and the most haptic surfaces near the reading alcove were worn and smoothed to let them be brushed against or sat upon.

Stone lends solidity and weight to any wall, but the price is high. So, you should use it cautiously and accordingly.

7. Steel Interior Window Trim for a Maximum Light Entering the Space

steel interior window trim for a maximum light entering the space
steel interior window trim for a maximum light entering the space. image © cornerstonearchitectsllp.com

The window opening has a trimmed frame that looks beautiful.

The window proportions appear derived from the stone’s module comprising the wall.

This window looks like a stone block was removed carefully so the natural light can come in. The interior trim carries the lightness of the glazed insertion but at the same time still emphasizes the thickness of the stone wall.

Lining the window opening with steel like this lets maximum natural light enter the space.

The thin profile limits the opening to the cut in the wall that was precisely defined. It also delivers a textural counterpoint to the stone.

Basically, the steel is perfectly installed against the thin and light mottled limestone. It defines logic for spanning openings in the stone walls.

If you think that steel is only perfect for ultramodern or industrial spaces, think again. The steel here can play well with any type of material.

In fact, if you’re looking for thin, sleek, and slender window trim around the openings, always use steel.

8. Minimalist White on White Interior Window Trim in a Farmhouse Style

minimalist white on white interior window trim in a farmhouse style
minimalist white on white interior window trim in a farmhouse style. image © ettarchitects.com

This picture shows a monochromatic and minimalist white on white interior window trim. It’s clearly outlined as a part of the wall system.

It is direct and simple, clearly not designed to catch attention, though. This window trim simply covers the joint between the construction components.

The system here is three-part, and it is clearly apparent.

The window system and wall are one. The second one is the floor system above that is rendered in wood and displays how things are supported. The third one is the main floor plane.

The trim is sharp and blocky, matching the detailing of the space. White on white design indeed doesn’t catch any attention right away, but it plays and defers well with others.

9. Wood on Wood Monochromatic Interior Window Trim

wood on wood monochromatic interior window trim
wood on wood monochromatic interior window trim. image © pbwarchitects.com

This is another elegant way to not attract attention with your window trim, but the trim still highlights the particular surface. It focuses on apertures than the trim itself.

The window openings, on the other hand, look like simple cuts in the plywood frame. The plywood wall finish is actually the focal point here, while the interior window trim serves a supporting role in the entire system.

The wall here has the same principle of white on white method. It is a perfect example of taking a single approach toward trim and applying it consistently everywhere, even if the materials differ.

Wall treatments and monochromatic interior window trim can unify small spaces. They can be used as an alternative when you can’t afford any fussy detailing.

When rendering the ceiling, walls, and windows in wood, the architects removed the sense of distinction.

10. Recessed Interior Window Frame Into the Floor with No Trim

recessed interior window frame into the floor with no trim
recessed interior window frame into the floor with no trim. image © nmaarchitects.com

If you want to create a perfect window wall that opens to a great view outside, it is highly recommended if you use a recessed interior window frame with no trim.

This window (and door) system is integrated fully into the room’s structure. The recessed frame delivers a look of a slot of space contained between the hovering ceiling plane and the floor.

Removing the trim altogether isn’t a cheap or easy thing to do, but the results here surely make an effort worth it.

The window wall looks bright and clear; it’s as if there were no windows here at all.

This no-trim window is an excellent option if you want to feel outside even though you’re inside.

11. Bright White Interior Window Trims Completed with Screen Shades Treatment

bright white interior window trims completed with screen shades treatment
bright white interior window trims completed with screen shades treatment. image © georgeinteriordesign.com

This arched window has a trim that is painted in bright white color.

There are boxes built over the existing windows and trim to hide shades. The boxes are meant to frame the window openings, while the arched parts are also framed with less structured boxes.

The boxes are meant to highlight the windows. They mix harmoniously with the walls surrounding and the clear glass windows.

In order to create contrast, the designer decided to combine them with striking blue window treatments.

To accentuate identical triple huge windows like this, it is excellent to use geometrical window trim like this, especially when combined with screen shades.

The window treatments here are roller shades by Lutron in semi-sheer material. There are custom pockets to hide the rollers, which all are automated.

12. Stained Knotty Alder Interior Window Trim for a Rustic Style

stained knotty alder interior window trim for a rustic style
stained knotty alder interior window trim for a rustic style. image © centresky.com

The window trims here were designed and built around a number of principles: durability, quality of detail, and sense of presence.

The earthy tones match the rustic elements that deliver a western lodge aesthetic.

The windows and trim were carefully selected in all wood. The texture, species, and type of wood play a significant part in the interior window trim. It is meant to improve the elegant ranch feel.

The trim is made of knotty alder, which is the recommended material for the window trim. It is from Architectural Traditions, 1X6, in standard country brown color. The alder wood was stained to highlight the wood’s natural tone.

The designer decided to contrast the window trim to the wall surround in order to attract more attention. This way, the interior window trim can be a highlight in the whole area.

13. Black Clad Interior Window Trim for a Contemporary Kitchen

black clad interior window trim for a contemporary kitchen
black clad interior window trim for a contemporary kitchen. image © johnstondesigngroup.us

This interior window trim perfectly encases the windows.

Basically, black finished window trim is the most common option for a modern or a contemporary look. However, when combined with tall windows in a rectangular shape like this, the window trim delivers a lovely traditional and classic look.

If you are looking for a dark option like this, most window manufacturers usually have a black-clad option.

The interior window trim is typically painted to match the exterior color. And since the exterior color is mostly in black, the finish of the black-clad option can be easily found everywhere.

This window trim is 1,75” wide. Its width makes the trim look elegant because it encases the windows nicely and contrasts the white walls around.

14. Thin Medium Tone Wood Interior Window Trim

thin medium tone wood interior window trim
thin medium tone wood interior window trim. image © wadesign.com

So little wood and so much glass, that’s the first impression of this interior window trim.

The tall windows almost reach the ceiling, letting much natural light penetrate the space easily.

The clear glass delivers a classic and elegant look. Those are Loewen windows and doors, a perfect option for a large space like this because these windows enhance the room’s dimension.

The window trim is made of Douglas fir wood with a natural finish. Wood elements in a room will never fail to give a timeless look.

Basically, this room features a rustic design. However, most people usually relate rustic with large logs or timbers in natural finish.

In fact, in order to achieve a rustic look, you don’t need to add real trunks to your room. You can use ultra-thin wood in a medium tone like this with a polished finish for the trim that perfectly matches the dining table.


After looking at those pictures, now you should do more detailed research when deciding what kind of interior window trim can fit your home perfectly.

One thing that you should remember is always to pick a window trim that suits your personality as well as your home architecture, wall color, the amount of natural light you want to have for your rooms, and the dimensions of the rooms.

Window trim stands out from the other elements in your house interior. So, it is essential to choose the right option for your room. Otherwise, it can turn out to be a disaster.

Good luck with your project!