How to Measure Your Windows for Blinds Like a Pro in Bolton

Getting the perfect fit for your window blinds starts with accurate measurements. Whether you’re living in a classic Victorian terrace in Bolton or a newly built home, properly measuring your windows ensures a seamless installation, improved functionality, and a polished look. In this guide, we’ll walk you through how to measure your windows for blinds like a pro—saving you time, money, and frustration.

Why Measuring Matters

Window blinds that are too short, too narrow, or unevenly cut can spoil the look of a room and impact the blinds’ effectiveness. By measuring carefully, Bolton homeowners can avoid common pitfalls and ensure their blinds provide optimal light control, privacy, and energy efficiency.

Whether you're going DIY or ordering made-to-measure blinds from a local Bolton supplier, precise measurements are essential.

Tools You’ll Need

Before starting, gather the following tools:

A steel measuring tape (not a cloth one)
A pen or pencil
A measurement record sheet or notepad
A spirit level (optional but helpful for older or uneven windows)

Tip: Always measure in millimetres (mm) for better accuracy—most blind manufacturers work in mm.

Step 1: Decide Inside or Outside Mount

Inside Mount (Recess Fit)
This means the blind will sit inside the window recess. It’s a cleaner, more integrated look that works best when the recess is deep enough.

Outside Mount (Exact Fit or Face Fit)
Here, the blind will sit outside the window recess, covering the frame. This method is great if your recess is shallow or if you want maximum light blockage.

Choose your mounting style first, as the measurements differ significantly.

Step 2: How to Measure for Inside Mount Blinds

If your Bolton home features deep window recesses, this is likely the preferred choice.

A. Width

Measure the inside width of the window at three points: top, middle, and bottom.
Use the smallest measurement as your final width.
This ensures the blind fits properly without catching the sides.

B. Drop (Height)

Measure the inside height at three points: left, centre, and right.
Use the longest measurement to ensure full coverage.

Pro Tip: Check the recess depth. For most blinds, a minimum of 60mm is required for a good fit.

Step 3: How to Measure for Outside Mount Blinds

If your windows are uneven or you want complete blackout, outside mounting is the way to go.

A. Width

Measure the width of the window frame and add at least 100mm (10cm) to each side (total 200mm) to block out light effectively.

B. Drop (Height)

Measure from where you want the top of the blind to sit (often 100mm above the frame) down to where you want it to end (usually just below the sill or to the floor for full-length blinds).

Pro Tip: For roller blinds, account for the mechanism’s extra height, usually 30–50mm.

Step 4: Take Note of Any Obstructions

Check for:

Window handles
Tiles or dado rails
Radiators below the window
Protruding mouldings

If you notice any obstructions, adjust the fitting position or opt for a different blind style. For example, vertical blinds or outside mounts can help avoid issues with handles or cranks.

Step 5: Double-Check Your Measurements

Always measure twice to confirm accuracy.
Note width first, then drop (e.g., 1200mm W x 1500mm D).
Label each measurement with the specific window location (e.g., “Living Room – Front Bay”).

This is especially important if you're ordering multiple blinds for different rooms in your Bolton home.

Step 6: Understand Blind Types and Their Requirements

Different blinds may require slightly different measurements:

Roller blinds: Ensure you account for the bracket space.
Venetian blinds: Leave a few mm clearance to allow slat movement.
Roman blinds: Consider fabric thickness.
Vertical blinds: Require more clearance at the bottom, especially if installing above radiators or furniture.

If ordering from a Bolton blinds specialist, confirm their measuring guidelines for your chosen style.

Step 7: Consider Professional Measuring Services in Bolton

While DIY measuring is possible, many local blind companies in Bolton offer free or low-cost measuring services. These professionals can:

Ensure exact measurements
Identify installation challenges
Recommend the best mount type for your window and decor

This can be especially helpful for:

Bay windows
Arched or angled windows
Conservatories and large glass doors

Getting it right the first time prevents costly returns or replacements.

Common Mistakes to Avoid

Using a soft tape measure (leads to inaccuracy)
Rounding up measurements (always use exact sizes)
Forgetting to check window symmetry
Not considering the type of blind and its fitting mechanism

Even minor miscalculations can result in poorly fitting blinds, which can spoil the look and functionality.

Final Tips for Measuring Like a Pro

Keep a measuring template or chart to stay organized.
Use a laser measurer if available for maximum precision.
Document all measurements clearly and label them.
Always double-check the mounting type before ordering.

Conclusion: Measure Once, Fit Perfectly

Measuring your windows correctly is the first step in transforming your space with beautiful, functional blinds. For homeowners in Bolton looking to elevate their interiors, whether through DIY or custom-fit solutions, getting the measurements right ensures you’ll enjoy the full benefits of light control, privacy, and style.

If in doubt, don’t hesitate to reach out to a trusted Bolton blinds specialist who can provide professional measuring and installation—ensuring your new blinds fit perfectly and last for years to come.

Harmony Blinds Bolton

Unit A1, Edge Fold, Ind Est, Plodder Ln, Bolton BL4 0LR, United Kingdom

+44 1257 581571

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