How to measure your windows for Window Treatments

Getting the perfect fit and look for your window treatments isn’t just about picking the right style or material—it starts with accurate measurements and proper installation. A misstep here can lead to treatments that look awkward, fail to function properly, or worse, aren’t usable at all. Whether you're a hands-on DIYer or prefer leaving it to the pros, these tips will help ensure a smooth process from measuring to installation.

Accurate Window Measurements

Precise measurements are non-negotiable when it comes to installing window treatments. A small mistake can lead to gaps that let in light, poor aesthetics, or treatments that simply don’t work.

Here's how to measure your windows like a pro:

1. Decide on an Inside or Outside Mount

   • Inside Mount: The treatment fits within the window frame. This can create a sleek, tailored look perfect for minimal spaces. For this, ensure your window frame is deep enough to support the treatment hardware.

   • Outside Mount: The treatment extends beyond the window frame, either for added light blockage or to make a small window appear larger. This style often works better for spaces where hardware depth isn’t sufficient.

   Knowing which mount you prefer impacts where you measure, so decide this first.

2. Use a Steel Measuring Tape Skip the soft, fabric measuring tape—it’s less precise. A steel tape measure is your best friend for this task, especially when aiming for exact results.

3. Measure Width and Height in Multiple Places Not all window frames are perfectly even, so always measure three points for both width and height—top, middle, bottom for width and left, center, right for height.

   • For inside mounts, record the smallest measurement for an exact fit. This prevents overlaps or gaps where the treatment could jam.

   • For outside mounts, measure the full width of the window plus any extra you’d like for coverage (typically 2”–4” on each side). Add similar extra length to the height for ideal coverage.

4. Double-Check Your Measurements Errors, even a fraction of an inch, can be costly. Once you’ve measured every section, go back and verify your numbers. Don’t forget to note whether your measurements are in inches or centimeters—this small detail can create big headaches if you mix them up.

5. Account for Fixtures and Obstacles Check for any obstructions like window cranks, handles, or decorative trim that could interfere with the treatment’s function. Factor these into your measurements and treatment selection to avoid installation troubles later on.

   
   

Quick tip: Write down measurements immediately and label them clearly (e.g., “Dining Room East Window”). Trust me, you don’t want to guess which room a random number belongs to later!

DIY vs. Professional Installation

When it comes to installation, the choice between doing it yourself and hiring a professional depends on your confidence, available tools, and the complexity of the treatment. Let’s weigh the pros and cons.

The Case for DIY Installation

If you’re handy and confident with a drill, DIYing your window treatments can save you money and give you a sense of accomplishment. However, it’s not always as straightforward as it seems. Ask yourself these questions:

• Do you have the right tools? Basic tools like a drill, level, and step ladder are usually required—but some installations may call for specialty tools.

• Are you installing more than one piece? Repeating the process for multiple windows gets easier but still requires attention to detail.

• Can you handle tricky adjustments? Misaligned brackets or hardware errors can leave you frustrated if you're not ready to troubleshoot.

  
  

Pros of DIY Installation:

• You’ll save on labor costs.

• There’s a sense of pride in doing it yourself.

• You control the timeline—no waiting for appointments or availability.

Cons of DIY Installation:

• Measurements and alignment can be tricky. Even minor errors can disrupt the functionality or look of the treatments.

• Installing heavier treatments, like shutters or layered drapes, can be physically demanding and may require a second set of hands.

• It can be time-consuming, especially if you’re new to it or trying to tackle a large project.

If you’re going the DIY route, be sure to follow the manufacturer’s installation guide closely. Many treatments also provide online videos to make the process clearer and foolproof.

When to Call a Professional

Let’s face it—sometimes, hiring a pro is worth every penny. If your windows are especially tall, oddly shaped, or require intricate installations, leaving it to an expert guarantees a seamless result. Professionals bring experience, special tools, and the expertise to handle even the trickiest installs with ease.

Pros of Professional Installation:

• No guesswork. A trained installer will take accurate measurements, ensuring a perfect fit every time.

• They handle tricky treatments like motorized blinds or heavy drapery with precision.

• Their experience often results in a faster and cleaner outcome, leaving you stress-free.

Cons of Professional Installation:

• The cost can add up, especially if you have several windows or large, custom treatments.

• Availability can sometimes be an issue, so you may need to schedule weeks in advance.

If you’re unsure about your DIY abilities, hiring a professional can actually save you time and money in the long run. Nothing’s worse than botching a job and needing to order replacement parts—or worse, starting over entirely.

No matter which route you choose, preparation is key. Accurate measurements set the stage for a stress-free installation, and understanding your abilities (or limits) helps you decide the best way to bring your vision to life.