You found the perfect shade, measured carefully, and then realized something. Your window frame is only an inch or two deep. Shallow window frames are common in newer builds, condos and homes where the windows sit close to the drywall.
The good news is that shallow frames do not stop you from getting a clean, custom look. You just need to plan the mount a little differently.
This guide walks you through measuring depth, choosing a mount and picking the shades that fit.
Step 1: Measure the Depth of Shallow Window Frames
Grab a steel tape measure. Measure from the front edge of the frame back to the first obstruction. That obstruction might be the glass, a window crank, a lock or a tilt latch.
Measure at the top, where the headrail would sit. Take a few readings across the width, since locks and cranks often sit in the middle.
Common Depth Guidelines
- Under 1 inch: an inside mount is very hard. Plan for an outside mount.
- 1 to 2 inches: some roller shades can fit, but the fabric may stick out past the frame.
- 2 to 3 inches: most roller and zebra shades will fit flush or close to it.
- Over 3 inches: almost any shade will fit inside.
Exact requirements vary by product and headrail size, so always confirm before ordering.
Step 2: Decide on Inside or Outside Mount
When a Partial Inside Mount Works
If you have just under the needed depth, a shade can sometimes sit inside the frame with the headrail sticking out slightly. Some people are fine with this. Others find it looks unfinished. A cassette headrail can help, since it gives the top a neat, squared-off finish.
When to Go Outside Mount
An outside mount attaches above the window to the wall or trim. It has some real benefits for shallow frames:
- It covers the whole window, reducing light gaps at the sides
- It can make the window look larger if you mount higher and wider
- Cranks and locks are no longer in the way
Add about 2 to 3 inches on each side and 2 to 4 inches above the frame. This overlap blocks side light and looks balanced.
Step 3: Choose Shades That Suit Shallow Frames
Roller Shades
Roller shades have one of the slimmest profiles. With a compact tube and a small bracket, they fit in surprisingly tight spaces. They are often the first choice for shallow frames.
Zebra Shades
Zebra shades usually come with a cassette, which adds depth. They often work best as an outside mount on very shallow frames. The cassette then becomes a clean design detail above the window.
Drapes
Drapes do not care about frame depth at all. Sheers or solid drapes on a ceiling or wall track can cover shallow windows completely. Layer them with a slim roller shade for full light control.
Step 4: Watch for Window Hardware
Cranks on casement windows are the most common problem. An outside mount clears them easily. If you want an inside mount, ask about crank extensions or low-profile handles.
Also check that the shade will not hit the handle when lowered. A fabric that rubs against hardware will wear out early.
If this all sounds like a lot, our team can measure for you. We check depth, hardware and wall conditions on every visit, then recommend the right high-end shade for each window. Customer service is the heart of what we do, and our free consultation means you never order the wrong size.
Frequently Asked Questions
What is the minimum depth for an inside mount roller shade?
It depends on the system, but many compact roller shades need about 2 inches for a flush fit. Some can work with less if a little overhang is acceptable.
Does an outside mount look less custom?
Not when it is done well. A properly sized outside mount with a cassette looks tailored and can make the window appear larger.
Will an outside mount block more light?
Yes. Because it overlaps the frame, it reduces light gaps, which is great for bedrooms.
Can motorized shades fit in shallow frames?
Many can, since the motor sits inside the roller tube. Check depth with your installer first.
Ready to Find the Perfect Blinds?
Browse our full collection at myhomeblinds.ca and find the right window treatments for every room in your home.
Have questions or want expert advice? We're here to help:
- 📞 Call us: 647-339-3753
- 📅 Book a free consultation: Book Online
