Shade Measuring Instruction
Welcome to our guide on measuring for your new shades! With our easy-to-follow instructions and the use of Measurement Finder, you'll be able to gather accurate dimensions for measuring for easy smart measurement.
Inside Mount VS. Outside Mount: Which One Should I Choose?
Before you focus on how to measure windows for blinds or shades, you must decide which type of mounting is right for you. Both inside and outside mounts offer distinct benefits and are suited for different situations.
Inside Mount Illustration
Inside Mount
Outside Mount Illustration
Outside Mount
Measure the Window for Inside Mount
Measure the Depth
Measure the depth at the top of the inside window casing to ensure adequate space for a secure inside mount. This measurement will also determine if a flush mount, where the product sits within the window frame without protruding, is possible. The minimum depth requirements for different shades vary, kindly check the format below for the information on depth requirements for each shade, which is necessary for an inside mount.
Measure the Width
For Shades: Due to potential irregularities in window shapes, it is recommended to measure the window at three places: across the top, middle, and bottom. Round each measurement down to the nearest 1/8 inch when ordering.
Measure the Length
To determine the length, also measure the window in three locations: across the left, center, and right. Use the largest of these measurements as your ordering length. Round each measurement down to the nearest 1/8 inch when ordering. The total shade length includes the headrail.
Image: Inside Mount Width Measurement (3 points)
Note on Deduction
To ensure the shade fits correctly, take the smallest of these measurements and consider deduction requirements to get the final width measurement.
| Shade Type | Deduction |
|---|---|
| Bamboo Shades | fabric width = ordered width (after deduction 3/8 inch from window frame) |
| Roman Shades | headrail width = ordered width (after deduction 3/8 inch from window frame) |
| Roller Shades and Zebra Shades | headrail width = ordered width (after deduction 3/8 inch from window frame) |
| Cellular Shades and Venetian Shades | headrail width = ordered width (after deduction 1/4 inch from window frame) |
Note on Side Gaps
Slight gaps on both sides of shades exist because the shade material is slightly narrower than the headrail. This design allows the shade to roll up and down smoothly without obstruction.
| Shade Type | Fabric Width Calculation |
|---|---|
| Roman Shades | Headrail Width = Ordered Width |
| Bamboo Shades | Fabric Width = Ordered Width |
| Roller Shades and Zebra Shades | Fabric Width = Ordered Width - 1 1/2 inches |
| Cellular Shades and Venetian Shades | Fabric Width = Ordered Width - 1/4 inch |
Inside Mount Requirements for Different Shades (unit: inches)
| Shade Type | Depth Req | Window Frame Width | Deduction | Ordered Width | Fabric Width |
|---|---|---|---|---|---|
| Roman Shades | 2 1/2 | 27 3/8 | 3/8 | 27 | 27 |
| Bamboo Shades | 2 3/4 | 27 3/8 | 3/8 | 27 | 25 1/2 |
| Motorized Shades | 4 | 27 3/8 | 1/4 | 27 1/8 | 26 7/8 |
| Roller Shades | 4 | 27 3/8 | 1/4 | 27 1/8 | 26 7/8 |
| Zebra Shades | 3 | 27 3/8 | 1/4 | 27 1/8 | 26 7/8 |
| Cellular Shades | 2 1/2 | 27 3/8 | 1/4 | 27 1/8 | 26 7/8 |
| Venetian Blinds | 3 | 27 3/8 | 1/4 | 27 1/8 | 26 7/8 |
Tips for Inside Mount
- Confirm if your window has enough depth for an inside mount. If not, no worries! You can switch to an outside mount or explore other suitable products.
- Examine the window frame or casing to make sure it's strong enough to drill into directly. Installation on plastic window frames is not recommended.
Measure the Window for Outside Mount
Check the Space
Measure the height of the area above the window where the headrail of the shade will be mounted. Confirm that the space is sufficient to guarantee a secure and proper installation of the brackets and headrail.
Measure the Width
Measure the width of the window. For framed windows, measure from the outer edge of the frame or trim. If space permits, it is recommended to add 4-6 inches (2-3 inches on each side) to this measurement to reduce light leakage. This adjusted measurement will be your ordering width, representing the overall width of the shade.
Measure the Length
Measure the height of the window (Frame outer edge to edge). If space permits, it is recommended to mount the shade at least 10-12 inches above the window frame to account for its stack height when fully rolled up and to maximize the window's exposure. The total shade length includes the headrail.
Image: Outside Mount Measurement
Tips for Outside Mount
- Allow Extra Space: When measuring for outside mount shades, account for the headrail and mounting brackets. To ensure optimal light control and privacy, add enough extra width to completely cover the trim/frame. If there is no trim, add a minimum of two inches on each side for a total of four extra inches.
- Create the Illusion of a Larger Window: Extending the blinds outside the window not only provides space for the mounts but also makes the window appear larger than it is, adding a sense of grandeur to your space.
- Check Mounting Space: Outside mounts require a flat surface of at least 2 inches above the window or frame to accommodate the mounting brackets. Ensure you have enough space available before proceeding with an outside mount.
- Consider Projection Brackets: If your window has frame molding that might obstruct the blinds, projection brackets can help by extending the blinds further away from the window frame, allowing clearance for the molding.
