Inside mount vs. outside mount is one of the most common and important decisions homeowners face when selecting custom window treatments. In homes throughout the St. Louis area, from historic brick residences to modern new builds, how a shade or blind is mounted can dramatically affect both appearance and performance.
While fabric, color, and style tend to get most of the attention, mounting choice plays a major role in light control, insulation, and overall design cohesion. Understanding inside mount vs. outside mount helps ensure your window treatments look intentional and function beautifully.
What Is an Inside Mount?
An inside mount means the shade, blind, or shutter is installed within the window frame itself. The treatment sits flush inside the window casing, creating a clean, tailored appearance.
Inside mounts are especially popular in the St. Louis area for homeowners who:
- Want to showcase decorative trim or millwork
- Prefer a streamlined, modern aesthetic
- Have deep window frames
- Value a built-in look
Inside mount installations often work beautifully in contemporary homes where clean lines are emphasized. They also complement historic St. Louis homes with detailed wood casings, allowing original architectural features to remain visible.
However, inside mounts require exacting, precise measuring. Older homes in the St. Louis area may have slightly uneven window frames, which can affect fit. Professional measuring is absolutely essential to ensure proper clearance and smooth operation. Finally, it’s also possible to use a partial inside mount for those who want an inside mount but have windows that are not deep enough for a flush mount.
What Is an Outside Mount?
In the discussion of inside mount vs. outside mount, an outside mount refers to a window treatment installed outside the window frame, either on the wall above the window or directly on the trim.
Outside mounts are often selected when:
- Window frames are shallow
- Maximum light blockage is desired
- You want windows to appear larger
- There are obstructions inside the frame
Because outside-mounted shades extend beyond the window opening, they reduce light gaps along the edges. This makes them particularly useful for bedrooms or media rooms where room darkening is a priority. In addition, outside mounting means the entire window treatment, when open, is outside of the window, which allows for a more open view through the window.
In the St. Louis climate, where bright summer sun can be intense, outside mounts can also improve energy efficiency by covering a slightly larger area and limiting heat gain.
Aesthetic Considerations
When evaluating inside mount vs. outside mount, aesthetics matter just as much as function.
Inside Mount Aesthetic:
- Crisp, tailored look
- Ideal for minimalist or modern interiors
- Keeps focus on window trim and architecture
Outside Mount Aesthetic:
- Can create the illusion of taller windows
- Adds visual height when mounted above the frame
- Allows for more dramatic design impact
In some St. Louis homes with smaller or older windows, outside mounts can visually expand the window’s presence, making rooms feel larger and more open.
Light Control and Privacy
One of the biggest practical differences in inside mount vs. outside mount is light leakage.
Inside mounts typically leave small light gaps along the edges of the window frame. For living rooms and kitchens, this may not be a concern. But in bedrooms, those gaps can allow early morning sunlight to enter, particularly during long summer days in the St. Louis area. And often that sliver of bright, early morning summer sunlight seems to shine precisely on someone’s pillow.
Outside mounts, by extending beyond the window opening, minimize those light gaps and enhance privacy. For homeowners seeking blackout performance, outside mount installations are often the better choice.
Energy Efficiency in the St. Louis Area
With hot, humid summers and cold winters, energy performance is always a consideration for St. Louis homeowners.
Inside mounts may provide slightly better insulation because they are closer to the window which allows less air to escape into the interior of the home. Still, outside mount window treatments can still perform extremely well when properly installed with close tolerances.
In the inside mount vs. outside mount decision, the difference in energy efficiency is often secondary to proper fit and product selection. Custom solutions tailored to your home make the greatest impact.
When Professional Guidance Matters
While the concept of inside mount vs. outside mount sounds straightforward, several factors influence the right choice:
- Depth of window frame
- Condition of trim
- Window alignment
- Desired light control
- Overall design goals
Homes throughout the St. Louis area, especially older properties, may have subtle variations in window dimensions that require expert measuring and evaluation.
A professional consultation ensures that mounting decisions enhance both function and style rather than create unexpected challenges.
Choosing What’s Right for Your Home
There’s no universal answer in the inside mount vs. outside mount debate. The right choice depends on your architecture, your design preferences, and how you use the space.
Overall, if you prefer a clean, built-in look and want to highlight beautiful trim, an inside mount may be ideal. If maximum light control, privacy, or visual impact is your goal, an outside mount may be the better solution. In addition, having inside mount window treatments in your kitchen doesn’t mean you have to choose the same type of mounts in your bedrooms.
The key is making an informed decision based on both aesthetics and performance, especially in the varied climate conditions of the St. Louis area.
Let Victor Shade Company Guide You
If you’re considering custom window treatments and weighing inside mount vs. outside mount options, the team at Victor Shade Company is here to help you.
Serving homeowners throughout the St. Louis area, we provide personalized consultations, precise measuring, and expert installation to ensure your window treatments look exceptional and perform beautifully.
Contact Victor Shade Company today to schedule your consultation and discover the perfect fit for your home.