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So, you’ve finally picked out the perfect blinds (or shades) - nice! But now you’re faced with another decision: should you mount them inside the window frame or outside? Does it even make a difference? And if it does, what kind of impact are we talking about here?
Spoiler alert: it does matter. A lot.
The way you mount your blinds affects way more than just how they look. It changes how much light gets in, how much privacy you have, and even how your space feels overall. And if you live in Canada, where windows come in all shapes and sizes - think massive bay windows, narrow condo windows, or quirky cottage-style frames - this decision becomes even more important.
So, what exactly does “inside mount” or “outside mount” mean? Which one is better? And how do you know which one will work best for your space? It’s not just about looks - each option changes how your windows function, how much light gets in, and even how spacious your room feels. In this guide, we’re unpacking everything you need to know so you can choose the perfect fit with confidence. By the time you’re done reading, you’ll have a clear vision (pun intended) of which style works best for your home!
Inside-mounted blinds are blinds that sit neatly inside the window frame, giving your space a clean, well-fitted look. They let the window itself remain the star of the show since they don’t extend beyond the frame. This is perfect if you love to show-off the architectural details of your home!
That said, precision is key here. Not every window can handle an inside mount - you need at least 2.5 inches of frame depth for the headrail to sit properly. So make sure you measure your windows carefully for them to fit perfectly. This style works well in older Canadian homes with deep wooden frames and in modern spaces with recessed windows. If you’re after a sleek, built-in look, inside mounts are the way to go.
In a nutshell, outside-mounted blinds are installed either on the wall above the window or directly on the window trim. This means they extend past the frame, offering greater light control and coverage.
Remember how inside-mounted blinds need at least 2.5 inches of frame depth? If your window doesn’t have that, an outside mount is your go-to option. It’s also great if you want to block more light, cover up less-than-perfect window frames, or even make a small window look bigger.
Outside-mounted blinds are also ideal for rental homes where drilling into window frames isn’t an option, or for bedrooms where you need total blackout conditions for better sleep.
Bonus: since the measurements don’t have to be as exact as an inside mount, installation tends to be a little easier.
So which one is better? That really depends entirely on your space, your needs, and the overall look you’re going for.
Blinds experts almost always recommend inside-mounted blinds - unless your window is too shallow or has obstructions like cranks or sensors. Here’s why they’re a solid choice:
Inside-mounted blinds keep things neat. Since they sit within the frame, they highlight your window’s natural design rather than covering it up. This works especially well in modern, minimalist spaces - think new condos and contemporary homes where clean lines matter.
Worried about light gaps? While outside mount blinds offer better overall light control a precise measurement for inside mount blinds can also achieve excellent results. Inside mount blinds will also help you filter light without letting too much in. Inside mounts work great for living rooms and kitchens where you want natural light without a harsh glare. If total darkness is the goal (hello, better sleep!), pairing them with blackout curtains is the way to go.
In smaller homes, every inch counts. Inside-mounted blinds don’t stick out, which means more room for furniture, shelves, or a cozy window seat. No awkward blinds getting in the way - just a seamless fit that keeps your space looking put together.
Ever seen mismatched blinds? Not a great look. Inside-mounted blinds sit flush with the window, creating a uniform appearance from both inside and out. If you live in a neighborhood with HOA rules about exterior aesthetics, this is a big plus.
Since inside-mounted blinds have fewer exposed edges, they collect less dust and stay cleaner for longer. A quick wipe-down or dusting is all they need - no need to worry about them sticking out and getting knocked around.
If your windows are too shallow or you need full blackout coverage, an outside mount might work better. But if your windows allow it, inside mounts are a great choice for a clean, modern, and space-saving solution.
While inside-mounted blinds are the go-to choice for most homes, there are situations where an outside mount is the better (or only) option. Here’s when you should consider them:
Not all windows have the required 2.5 inches of depth for inside-mounted blinds. If your window frame is too shallow or pretty much nonexistent, inside-mounted blinds just aren’t going to work.
There’s no point in forcing a fit when outside-mounted blinds can give you full coverage without the struggle. This is a common issue in older homes, rentals, and apartments where windows are set right into the wall with no real frame to work with. An outside mount lets you skip the hassle and still get the look and function you need.
Some windows just aren’t built for inside-mounted blinds - maybe the frame is too shallow, or there’s no frame at all, just a window set directly into the wall. That’s where outside-mounted blinds come in.
They don’t just fit better; they also give you more coverage, make small windows look bigger, and create a clean, finished look. If you’ve got an older home, a rental, or a place with odd-sized windows, this could be the perfect fix.
Measuring for inside mounts requires precision - too tight, and they won’t fit; too loose, and there’s a noticeable gap. Outside mounts are more forgiving. You just measure the window and add a few extra inches on each side to ensure full coverage. If you’re installing them yourself, outside mounting is often the simpler, less stressful option.
If you love the look of oversized window treatments or want to add texture and layers to a room, an outside mount can help achieve that. This works especially well with bold patterns, dramatic fabrics, or when pairing blinds with curtains for a high-end, polished look.
Outside-mounted blinds can be a great choice for light control, but for the best results, it’s all about the right pairing. Just a heads up: just a tiny bit of light can filter through the edges, creating a soft "halo" effect, so if complete darkness is the goal, whether for a bedroom, nursery, or cozy movie night, layering outside-mounted blinds with blackout curtains is the perfect solution. Not only does it block out more light, but it also adds an extra layer of privacy and style to your space.
Inside Mount
Outside Mount
Common mistakes to avoid: Many older Canadian homes have non-standard window sizes, so don’t assume a standard blind will fit. Also, watch out for window handles, cranks, or trim that could interfere with an inside mount. If you’re unsure, double-check with the manufacturer’s depth requirements before ordering.
Standard vs. Custom Sizing: If your windows are a common size, you’ll save money by sticking to off-the-shelf options. But if your home has unique dimensions (which is common in older Canadian houses), custom blinds might be necessary, adding to the cost.
If you live in a historic district, you might have to follow certain rules about what can be seen from the outside of your home. Some neighborhoods have guidelines to keep a consistent look, which could mean restrictions on certain window treatments. It’s always a good idea to check local regulations before choosing blinds or shades, especially if you’re considering an outside mount.
Pick colors and materials that match your space - wood blinds add warmth, while metal or fabric can give a more modern vibe. And if you want the best of both worlds, try layering! Blinds with curtains or drapes not only look great but also give you more control over light and privacy.
If you’ve made it this far, you probably realize that there’s no universal “right” choice between inside and outside-mounted blinds. But what if you didn’t have to choose? Sometimes, layering both options can be the smartest solution, both functionally and aesthetically.
Want a pitch-black bedroom?
Try inside-mounted cellular shades + outside-mounted blackout drapes for maximum light control and insulation.
Love a bright but private living room?
Try inside-mounted light-filtering roller shades + outside-mounted sheer curtains to let in natural light without compromising privacy.
Need flexible light control with a stylish touch?
Try inside-mounted Venetian blinds + outside-mounted Roman shades for adjustable privacy and an elegant layered look.
At the end of the day, mounting your blinds inside or outside the frame isn’t just about looks - it affects light control, privacy, and even how your space feels. If you love a sleek, built-in finish, inside mounts are the way to go. Need more coverage or working with tricky windows? Outside mounts have your back. And if you can’t decide, layering both can give you the best of both worlds.
Now that you know the pros and cons, you're ready to pick the perfect fit with confidence.
Still unsure? Browse our collection and find the right blinds for your Canadian home today!
Further Readings
