20 Modern Interior Window Trim Ideas & Styles

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Sash Windows Refurbish specializes in providing repair and restoration services for wooden windows and doors in the UK, as well as various types of carpentry. During the process of fulfilling orders, we utilize a range of tools and paints, including saws, sprays, primers, resins, and adhesives. With more than 20 years of experience in carpentry, we have tested and used various brands and types of work tools, making us well-equipped to offer helpful advice on selecting the right tools and paints for your needs. Read more ...

Natural Wood and Marble Harmony

For quite some time, painted trim has been a popular choice, but now, there’s a resurgence of natural wood, especially when combined with white walls or countertops. In this contemporary kitchen, honey-coloured wood is elegantly matched with white marble tiles, creating a cosy variation of the traditional black-and-white marble aesthetic. The slender trim boasts a petite shelf, ideal for displaying houseplants and decorative items.

Sleek White Window Trim Interior

Contemporary design embraces sleek lines and minimalist elements, and this flat trim perfectly embodies these characteristics.

In this bathroom, the shiny blue tiles evoke a serene, coastal ambience, reminiscent of a beach retreat – just add a sailboat painting and a bowl of seashells for the complete look. The subtle contrast of the white trim against the vibrant blue is truly striking. Nevertheless, this concept for interior window trim would complement almost any bathroom colour scheme.

Bold Black Interior Window Trim Concept

Combining black and white hues creates a sharp, striking effect in any space, offering a polished and high-contrast atmosphere. Black is becoming increasingly popular in contemporary, minimalist residences.

While black paint is widely used for walls, plumbing fixtures, cabinets, and hardware, committing to a dark wall colour can be daunting and time-consuming to cover up. Using black for trim is a simple and effective way to experiment with this bold shade.

In this living room, white walls and curtains serve as a backdrop, allowing the black interior window trim to stand out. The rest of the room’s decor adopts soft and neutral tones, ensuring the black trim captures attention without appearing overly cold or harsh.

Elegant Gray Interior Window Trim

For quite some time, white interior window trim has been the go-to choice, while black might feel intimidating, especially for homeowners seeking a new design perspective. To strike a balance between the two and achieve a unique, modern appearance, consider opting for grey window trim.

In this living room, the timeless fireplace and trim maintain their classic style but receive a refreshing update with a coat of grey paint. Paired with contemporary ceramics and seating, the revamped trim seamlessly bridges the gap between the traditional and the modern. It goes to show that sometimes, all it takes is a simple layer of paint to transform a space.

Charming Rustic Window Trim Design

The enduring charm of rustic aesthetics continues to captivate. In this compact area, the influence of antique steamer trunk-inspired drawers, coffee tables crafted from tree slices, and window trim made from reclaimed barn wood infuses a rustic essence without overwhelming the space. The seamless integration of contemporary seating, muted tones, and an abundance of indoor greenery maintains a modern allure. Plus, if the room’s decor ever transforms, this flat trim offers the flexibility to be easily repainted to harmonize with the updated style.

Decorative Fluted Window Trim

Presenting a stunning interior window trim concept inspired by mid-century aesthetics. The fluted trim, focusing on texture rather than colour, enhances visual appeal.

In this space, a contemporary ambience is maintained through a cosy neutral palette, combined with various mid-century design elements. The furniture, characterized by its sleek lines, adds a touch of elegance without overwhelming the room. With slender sofa arms and table legs, the design maximizes open visual space. Intriguing details such as slatted doors, tufted upholstery, and, notably, the textured fluted trim, contribute to the overall captivating atmosphere.

Coordinate Window Trim with Wainscotting

Explore a contemporary interpretation of the traditional Cape Cod style with this interior window trim concept. Pairing white trim with white wainscoting, the design incorporates high wainscoting to visually elevate the room. The upper portion of the wall is adorned in a deep navy hue, creating a luxurious contrast. The combination of blue and white produces a sophisticated, enduring, and spacious ambience, evoking a timeless elegance.

Harmonize Window Trim with Pictures and Chair Rails

Consider this interior window trim concept that integrates various moulding styles. The upper and lower sections of the window trim align harmoniously with a picture rail and chair rail. These sharp horizontal lines elegantly offset the stylish teal wall paint. Embracing a limited colour palette, the room successfully embraces the bold hue without appearing excessive or overwhelming.

Windows Without Wood Trim

A contemporary window design trend involves eliminating traditional trim. Joe Cruz, an editor at Family Handyman, employed a technique called drywall return to create a sleek, trim-free window appearance at The Getaway, producing impressive results.

Opting out of using wood trim not only enhances aesthetics but also proves cost-effective. If you already have trim in other parts of your home, you can harmonize the overall look by matching the windowsill with the existing trim.

Embrace Soft and Gentle Touches

This space, adorned with delicate lavender accents and captivating wallpaper, serves as undeniable evidence that elegant purples, even in pastel shades, can exude a sophisticated vibe within the appropriate design context.

Incorporate Timeless Elegance

In this beachfront home on Sea Island, the use of stained wood for the interior window trim adds a touch of classic and enduring style, balancing the overall airy ambience of the space.

Integrate with Wallpaper Patterns

Given the striking presence of Scion Shibori wallpaper in Lagoon adorning the walls, it’s fitting to enhance the aesthetic impact by incorporating window trim in a corresponding shade.

Bringing Nature Indoors

In the 2020 Idea House, a natural green colour used for the interior window trim establishes a visual link between the indoor space and the lush greenery outside the windows.

Let Vibrant Cabinets Inspire Your Design

Embrace the idea that sometimes, embracing abundance can be visually appealing. Follow the cabinets’ example and pair vibrant, intricate wallpaper with a playful yet consistent colour for a lively contrast.

Challenge the Norm

Having a colourful room with white trim is perfectly fine, but how about flipping the concept? In this design by Whitney McGregor, vibrant teal trim introduces a playful contrast against the backdrop of pristine white walls.

Embrace Greige Tones

Achieving a perfect balance of understated elegance, this neutral space embodies the essence of greige with its subtle and subdued colour palette.

Remember, Sometimes One Color Works Best

Learn a valuable lesson from this impressive laundry room and experiment with a daring shade, such as Benjamin Moore’s Slate Teal (2058-20), covering everything from the floor to the ceiling, including the window trim on the inside.

Illuminate with White Elements

The application of a warm, earthy green paint on the walls imparts a natural, woodland atmosphere to this lake house. At the same time, the white trim adds brightness and light, enhancing the overall ambience.

Introduce Architectural Salvage

In this family farmhouse located in Georgia, the homeowner infused a touch of novelty into the interior windows by incorporating a beautifully hand-carved antique privacy screen sourced from India.

Dream Serenely with Soft Blue Shades

The serene bedroom retreat seamlessly incorporates Sherwin-Williams Silver Lake on the trim, creating a harmonious and calming ambience.

About the author

Glen Ramsey, who presently holds the positions of customer support and content manager, is a cherished member of the Sash Window Refurbish team. He is in a unique position to provide advice on all questions pertaining to the renovation of historic windows because he has a wealth of experience in all elements of window renovation, dealing with clients regularly and assisting them in choosing the best window-related course of action. He oversees the creation of information for all of our platforms in his capacity as content manager, including web content and other materials. Glen has witnessed the whole gamut of Sash Window Refurbish's window restoration activities, from our work on significant listed Georgian homes to a wide variety of smaller-scale private residential projects.


My technician Andrew replaced all my sash windows that had rotten sills. Accessing the rotten sills was not an easy task. He explained to me what needed to be done in order to fix the problem. He is a great person and I’m happy that he was the one who did the job. He is reliable, tidy, friendly and very professional. I highly recommend him.



I hired Andrew and Alex a while back to repair my damaged sash windows. They were was very considerate and very patient as he did his job. A few days ago, I had another problem with one of my sash lock keys and I called him again to come and fix the problem. I’m very impressed that Liam responded quickly and he not only fixed the problem but he also gave me a spare key. What a great after sales service!

Alan W.


I’m very impressed with the new windows that Andrew installed and also the reconditioning job that he did on other sash windows. The quality of his work is by far more superior than what we got when we hired another company a few years back. We will certainly hire him again if any window work arises

Kelly (Sleaford)


Our decorator referred us to Andrew because some of the work needed a window expert. Andrew together with our decorator did a fantastic job. The work was done efficiently and to the highest standards. Andrew is understanding, committed and very professional. I recommend him without any hesitation.

Steaven Reader


Alex did a great job in fixing windows in our terraced house. The windows were broken, frames damaged and the wood was also rotten. Alex's job was high quality and he did it pretty fast. I was also very impressed that he was considerate of my son’s asthma condition and maintained cleanliness. Top work.



Andrew just recently replaced three sash windows in my Edwardian house. He also repaired and replaced some sills and draught proofed three windows. In addition to that, he also did some carpentry work. What I like the most about Liam is that he did a clean job. He is very professional and always updated me about the timescales and costs. He also did his job with minimal disruptions. I highly recommend him.

Cris M.