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Terms of Use wikiHow is where trusted research and expert knowledge come together. Learn why people trust wikiHow
Categories
Home and Garden
Home Maintenance
Doors and Windows
Window Treatments
Window Blinds
How to Install Vertical Blinds Download Article Co-authored by Mike Holmes Jr.
Last Updated: October 2, 2025 References
Download Article
Mounting Inside the Window Frame
|
Mounting Outside the Window Frame
|
Attaching the Vanes
|
Q&A
|
Tips
|
Things You'll Need
|Show more|Show less X
This article was co-authored by Mike Holmes Jr.. Mike Holmes Jr. is a licensed general contractor, carpenter, and TV personality based in Canada. Mike first started working in construction with his father at 14 and quickly discovered his passion for the skilled trades. He first got his contractor license and then his carpentry license from George Brown College. In addition, he has extensive experience filming home improvement shows with his family, including co-hosting Mike’s Ultimate Garage with his father, Mike Sr., and also working as a crew member on Holmes in New Orleans, Holmes Inspection, Holmes Makes it Right, and Holmes and Holmes. Mike is passionate about carpentry and woodworking, sharing this passion and educating the next generation through his work with Skills Canada, SkillsUSA, World Skills, Conestoga College, and more. This article has been viewed 115,349 times.
Vertical blinds often used to cover sliding glass doors or large windows. When measuring and ordering vertical blinds, you should decide whether you want them mounted inside the door or window frame, or on brackets outside the frame. Here's how to install vertical blinds using either method.
Steps
Method 1 Method 1 of 3:
Mounting Inside the Window Frame
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1 Screw holes into the valance. The valance is L-shaped so the top surface can be mounted inside the upper frame and the front of the valance will hide the headrail.
Place the valance on a flat surface with the front of the valance in an upright position.
Measure 3 inches (7.6 cm) from each end and position each bracket so the top edge is against the upright valance.
Use a pencil to mark the 2 screw holes in each bracket.
Predrill the four holes, with a smaller bit than the actual screws you will use for the screws (if possible).
2 Mark the bracket location on the frame. Mark holes for the brackets on the inside of the upper frame of the door or window.[1]XResearch source
Measure 3 inches (7.6 cm) from the side of the frame and 1 inch (2.5 cm) out from the glass.
Hold the first bracket in place, place a screw in the first hole and tap with a hammer to make a mark. Make another mark in the second hold.
Repeat on the other side for the second bracket.
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3 Attach the components. Attach the valance and brackets to the inside frame.[2]XResearch source
Position the valance in the window so the marks you made in the upper frame are visible through the holes you drilled in the valance.
Have a helper hold the valance while you attach the screws through the bracket and valance.
Repeat. Repeat on the other side for the second bracket.
4 Snap in the headrail. Snap the blinds head rail into the brackets by hooking the front end into the clip and then lifting the back end until it clicks into place.[3]X Expert Source Mike Holmes Jr.General Contractor and CarpenterExpert Interview
5 Attach the vanes. If you don't know how, see the section on attaching the vanes later in the article.
Advertisement Method 2 Method 2 of 3:
Mounting Outside the Window Frame
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1 Locate the headrail. Determine the placement of the blinds' headrail over the window.
Pick a point under the window, but near the center, where you want the bottom of the blinds to reach.
From that point, measure the height of the blinds up to the top of the window and make a pencil mark.
2 Mark the positioning of the brackets. You'll need a helper for this step.[4]XResearch source
Have a helper place the headrail directly on the pencil mark, while you check that's it's straight with a level.
Measure 4 inches (10 cm) from the end of the headrail and make a pencil mark directly over the headrail.
Repeat on the other end for the second bracket.
If installing vertical blinds wider than 62 inches (1.5 m), mark the positioning of the additional support brackets provided.
3 Attach the brackets to the wall with the provided screws. If the brackets are being attached to drywall rather than a wood frame around the window, drill a hole and insert wall anchors first.[5]XResearch source
4 Snap in the headrail. Hook the headrail onto the brackets.[6]X Expert Source Mike Holmes Jr.General Contractor and CarpenterExpert Interview
5 Attach the vanes. If you don't know how, follow the instruction in the section on attaching the vanes later in the article.
6 Install the valance. Add a valance, if you want one and one was included.
Push the corners onto either end of the front piece of the valance, and then attach the side pieces.
Snap the provided clips along the headrail.
Slide the valance into the clips.
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Attaching the Vanes
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1 Space the vanes. Pull the cord on the blinds to evenly space the stems that will hold the individual vanes (or louvers).
2 Rotate the stems. Rotate the stems so you can see the slits.
3 Attach the vane. Take the first vane and push the end with a hole up into the slit until the hook catches in the hole.[7]XResearch source
4 Attach the rest of the vanes to their stems. Using the same technique, attach the remaining vanes, making sure they all face the same direction (if they're curved). Test the stems when you're done.
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Community Q&A
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Question What would cause the slats on my blinds not to turn? Community Answer If they are not caught on something on the bottom, it likely is an issue with the top gears. Thanks! We're glad this was helpful.Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 5 Helpful 13
Question The holes in the wall are too big from previous installation. How do you fix that? Community Answer You can fill in the holes with spackle and re-drill, or you could try plastic anchors for your screws. Thanks! We're glad this was helpful.Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 2 Helpful 6
Question What's the best way to hang vertical blind slats when they are too long? Community Answer Either hang them higher so they don't touch the ground, or trim the ends (which I don't recommend). The best thing to do would be to just buy blind slats that fit correctly. Thanks! We're glad this was helpful.Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 4 Helpful 1
See more answers Ask a Question 200 characters left Include your email address to get a message when this question is answered. Submit Advertisement
Tips
Use the inside mount installation instructions to mount vertical blinds to the ceiling. Thanks Helpful 0 Not Helpful 0
Check the packaging to make sure all the necessary hardware is included before you begin to install vertical blinds. Thanks Helpful 0 Not Helpful 0
Submit a Tip All tip submissions are carefully reviewed before being published Name Please provide your name and last initial Submit Thanks for submitting a tip for review! Advertisement
Things You'll Need
Tape measure
Pencil
Cordless drill
Screwdriver attachment for drill
Hammer
Level
Wall anchors (optional)
Stepladder
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Co-authored by: Mike Holmes Jr. Home Renovation Expert This article was co-authored by Mike Holmes Jr.. Mike Holmes Jr. is a licensed general contractor, carpenter, and TV personality based in Canada. Mike first started working in construction with his father at 14 and quickly discovered his passion for the skilled trades. He first got his contractor license and then his carpentry license from George Brown College. In addition, he has extensive experience filming home improvement shows with his family, including co-hosting Mike’s Ultimate Garage with his father, Mike Sr., and also working as a crew member on Holmes in New Orleans, Holmes Inspection, Holmes Makes it Right, and Holmes and Holmes. Mike is passionate about carpentry and woodworking, sharing this passion and educating the next generation through his work with Skills Canada, SkillsUSA, World Skills, Conestoga College, and more. This article has been viewed 115,349 times. 2 votes - 50% Co-authors: 11Updated: October 2, 2025 Views: 115,349 Categories: Window Blinds In other languagesItalian
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Yes No Advertisement Cookies make wikiHow better. By continuing to use our site, you agree to our cookie policy. Co-authored by: Mike Holmes Jr. Home Renovation Expert 2 votes - 50% Click a star to vote 50% of people told us that this article helped them. Co-authors: 11Updated: October 2, 2025 Views: 115,349
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Download Article Co-authored by Mike Holmes Jr. 
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Co-authored by: Mike Holmes Jr. Home Renovation Expert This article was co-authored by Mike Holmes Jr.. Mike Holmes Jr. is a licensed general contractor, carpenter, and TV personality based in Canada. Mike first started working in construction with his father at 14 and quickly discovered his passion for the skilled trades. He first got his contractor license and then his carpentry license from George Brown College. In addition, he has extensive experience filming home improvement shows with his family, including co-hosting Mike’s Ultimate Garage with his father, Mike Sr., and also working as a crew member on Holmes in New Orleans, Holmes Inspection, Holmes Makes it Right, and Holmes and Holmes. Mike is passionate about carpentry and woodworking, sharing this passion and educating the next generation through his work with Skills Canada, SkillsUSA, World Skills, Conestoga College, and more. This article has been viewed 115,349 times. 2 votes - 50% Co-authors: 11 Updated: October 2, 2025 Views: 115,349 Categories: Window Blinds In other languagesItalian 
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618 
1 Screw holes into the valance. The valance is L-shaped so the top surface can be mounted inside the upper frame and the front of the valance will hide the headrail. 
2 Mark the bracket location on the frame. Mark holes for the brackets on the inside of the upper frame of the door or window.[1] 
3 Attach the components. Attach the valance and brackets to the inside frame.[2] 
4 Snap in the headrail. Snap the blinds head rail into the brackets by hooking the front end into the clip and then lifting the back end until it clicks into place.[3] 
5 Attach the vanes. If you don't know how, see the section on attaching the vanes later in the article. Advertisement 
1 Locate the headrail. Determine the placement of the blinds' headrail over the window. 
2 Mark the positioning of the brackets. You'll need a helper for this step.[4] 
3 Attach the brackets to the wall with the provided screws. If the brackets are being attached to drywall rather than a wood frame around the window, drill a hole and insert wall anchors first.[5] 
4 Snap in the headrail. Hook the headrail onto the brackets.[6] 
5 Attach the vanes. If you don't know how, follow the instruction in the section on attaching the vanes later in the article. 
6 Install the valance. Add a valance, if you want one and one was included. 
1 Space the vanes. Pull the cord on the blinds to evenly space the stems that will hold the individual vanes (or louvers). 
2 Rotate the stems. Rotate the stems so you can see the slits. 
3 Attach the vane. Take the first vane and push the end with a hole up into the slit until the hook catches in the hole.[7] 
4 Attach the rest of the vanes to their stems. Using the same technique, attach the remaining vanes, making sure they all face the same direction (if they're curved). Test the stems when you're done. Advertisement 
Community Answer If they are not caught on something on the bottom, it likely is an issue with the top gears. Thanks! We're glad this was helpful. Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 5 Helpful 13 
Community Answer You can fill in the holes with spackle and re-drill, or you could try plastic anchors for your screws. Thanks! We're glad this was helpful. Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 2 Helpful 6 
Community Answer Either hang them higher so they don't touch the ground, or trim the ends (which I don't recommend). The best thing to do would be to just buy blind slats that fit correctly. Thanks! We're glad this was helpful. Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 4 Helpful 1 
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