How to Measure Windows for Blinds and Shades
March 18, 2026
Getting the right measurements is the most important step when ordering custom blinds or shades.
Even the best products won’t look or function properly if the sizing is off. Whether you’re upgrading a condo in downtown Vancouver or a home in the Lower Mainland, this guide will walk you through everything you need to measure your windows accurately – like a pro.
Why Accurate Measurements Matter
In a market like Vancouver – where homes range from modern glass condos to older character houses – window sizes and frames can vary significantly.
Proper measurements ensure:
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A clean, professional look
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Smooth operation of your blinds or shades
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Better light control and privacy
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No costly reorders or delays
Step 1: Decide Inside Mount vs. Outside Mount
Before measuring, you need to determine how your blinds or shades will be installed.
Inside Mount
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Installed within the window frame
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Clean, built-in look
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Requires sufficient depth
Outside Mount
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Mounted above or outside the frame
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Makes windows appear larger
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Ideal for shallow or uneven frames (common in older Vancouver homes)
Step 2: Tools You’ll Need
Keep it simple:
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Steel measuring tape (not fabric)
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Pencil and paper (or phone notes)
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Step ladder (for taller windows)
Step 3: Measuring for Inside Mount Blinds
For inside mount, precision is key.
Measure Width (3 Points)
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Measure the top, middle, and bottom of the window opening
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Record the narrowest width
Measure Height (3 Points)
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Measure left, center, and right
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Record the longest height
Measure Depth
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Measure the depth of the window frame
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Ensure it meets the minimum depth required for your blinds or shades
Tip: Vancouver homes-especially older ones-may have uneven frames, so never rely on just one measurement.
Step 4: Measuring for Outside Mount Blinds
Outside mount gives you more flexibility.
Measure Width
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Measure the width you want to cover
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Add 2-3 inches on each side for better light blocking and privacy
Measure Height
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Measure from where the headrail will be installed to where you want the blinds to end
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Typically extend above the window frame by 2-4 inches
Step 5: Consider Vancouver-Specific Factors
Living in Vancouver comes with unique considerations:
Condos & High-Rises
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Check strata rules before installing
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Uniform exterior appearance may be required
Moisture & Humidity
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Bathrooms and kitchens benefit from moisture-resistant materials (like faux wood or vinyl)
Large Windows & Natural Light
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Many Vancouver homes feature large windows-consider light-filtering or blackout options depending on exposure
Common Measuring Mistakes to Avoid
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❌ Using a fabric measuring tape
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❌ Rounding measurements (always use exact numbers)
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❌ Measuring only once
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❌ Forgetting to account for obstructions (handles, cranks, etc.)
Pro Tip: Double Check Everything
Measure each window separately-even if they look identical. Subtle differences are common, especially in older homes across Vancouver neighborhoods.
When to Call a Professional
If you’re unsure-or dealing with bay windows, angled frames, or large custom installations-it’s worth getting professional measurements. It saves time, money, and ensures a perfect fit.
Measuring your windows for blinds and shades doesn’t have to be complicated. With the right approach and attention to detail, you can get precise measurements and achieve a clean, custom look for your space.
If you want expert help or custom blinds tailored to Vancouver homes, working with a local specialist can make the entire process seamless-from measurement to installation.
Need help measuring or choosing the right blinds for your Vancouver home?
Contact us today for a free consultation and professional measurement service-no guesswork, just perfect results.