How to measure for multiple blinds on one window?

Author: Miss Jennyfer Maggio DDS  |  Last update: Monday, February 23, 2026

Measure the window in three places (top, middle, bottom), as shown in our measuring instructions. For two (2) separate blinds in one window, take the smallest width and divide it by 2. Then add 1/4" to the width of each blind. (The factory will deduct 1/2" from each blind.)

Can you put multiple blinds on one window?

Ideas to Inspire Gallery

For very large windows, we recommend using two or three smaller blinds on a single headrail. There are a number of advantages to this method: you can raise or lower each individual blind separately, and you avoid the wear and tear that a single, heavier blind would put on the lifting mechanism.

How wide should blinds be for a 36 inch window?

Be sure to measure wide enough to cover the entire window and provide maximum light coverage. Example: If the window opening is 36” wide, it might be helpful to order 40” if the space allows. This will provide 2” coverage on each side of the window.

How do you fill the space between two blinds in a window?

Other options would be to put something up there that is black or painted black like a board or some fabric. Add a drape on each end and the middle of the window. You could close the gap between the shades and then add drapes to the ends to hide the reveal that will be now on the ends.

What does the number of blinds per headrail mean?

Multiple Blinds or Shades on One Headrail – Multiple blinds or shades on one headrail is when two or more window blinds or window shades are mounted on a single headrail, and are used in large windows. Have a question about window blinds, window coverings or window treatments?

How To Measure An Opening Requiring Multiple Shades

How do you measure for multiple blinds in one window?

Measure the window in three places (top, middle, bottom), as shown in our measuring instructions. For two (2) separate blinds in one window, take the smallest width and divide it by 2. Then add 1/4" to the width of each blind. (The factory will deduct 1/2" from each blind.)

How much gap should be on each side of blinds?

Add an overlap of 3” on each side of the window (6” total) to allow for more privacy and light blockage. Please note: Factory Deductions: Inside mounted products have a light gap between 1/8” and 1/4” on either side of the window – this gap is required in order for the product to operate properly.

How to cover the gap between two blinds?

How do you block the gap between blinds? There are multiple effective ways to block or fill the gap between blinds, such as ensuring edge-to-edge fit, adding extra fabric, layering, and adding blackout liners or light-blocking strips. Among these options, layering offers an ultimate blackout effect.

How do I fill space between two windows?

Rope Caulk for Window Gaps

Here's what you need to know about rope caulk: Application: Simply peel off as many 1/8-inch strips as needed to fill the gap and press them firmly into place. The strips conform to the shape of the gap for an effective seal.

Should blinds be the exact size as the window?

Measure both the width of the window and the height of the window. Consider adding an extra 3 inches to the width and height for optimum light control and privacy. Extending the blinds outside the window will also provide the space needed for the mounts and help the window appear larger than it actually is.

Should blinds touch the window sill?

Privacy: Blinds that touch the sill can improve privacy, especially in spaces like bathrooms or ground-floor rooms. Day and Night Blinds and Roman Blinds benefit from this setup as they prevent gaps through which people can see. Temperature Control: In colder months, blinds that touch the sill can help retain heat.

What is the most common window size for blinds?

Homes: In residential homes, standard window sizes typically range from 24 inches to 48 inches in width and 36 inches to 72 inches in height. However, the most common window size for homes is often 24 inches wide by 36 inches tall (2 feet by 3 feet).

How much should a blind overlap a window?

To minimize light leakage we recommend that the blind overlaps the window recess by at least 70mm at the top and 50mm each side. The overlap at the bottom of the blind is a matter of personal choice but please take into account obstacles such as radiators.

How to install blinds on a wide window?

Installing Window Blinds
  1. Step 1: Mark the Window Center. ...
  2. Step 2: Mark and Drill Pilot Holes. ...
  3. Step 3: Attach the Bracket. ...
  4. Step 4: Place the Blinds in the Bracket. ...
  5. Step 5: Attach the Wand. ...
  6. Step 6: Attach the Valance. ...
  7. Step 7: Insert the End Caps.

Should all blinds on front of house be the same?

The short answer is: it depends! We recommend sticking to a common element in terms of color, fabric, or style. For example, if you want some blinds and some shutters, you could use the same color wood. For homes with varying styles in each room, you may want to focus on cohesion on a room-by-room basis instead.

What to do if blinds are not wide enough?

Manufacturers will typically deduct approximately 1/2" from the specified measurement for proper clearance. If you have ordered blinds that are too narrow sometimes you can still mount them by installing them as a ceiling mount to the top of the window sill. Installation will be similar to an outside mount.

What do spacer blocks do for blinds?

You need spacer blocks when your trim or molding might keep your blinds from hanging straight down when mounted directly on the wall or door. So, you insert a spacer block between the wall and the installation brackets to push them away from the wall enough so your blinds can hang straight.

What size blinds do I need for a 35 inch window?

The actual width of the 35" blinds are 34.5" (half inch narrower) to comfortably fit inside a 35" opening. So if your frame is exactly 34.5 inches, I would go with the 35" blinds. But first check that the width is the same through the whole length of the frame.

How do you cover a gap between two blinds?

The first is to layer draperies on top. Blackout draperies will be the most effective. This will also give your windows a more stylish, layered look. The second option is to add vinyl light gap blockers.

How much clearance do you need for perfect fit blinds?

Measure from the edge of the rubber beading, where it meets the glass and ensure you have at least 2.5cm clearance from any obstruction, such as handles, hinges or vents.

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