How to Measure for Shutters: A Complete DIY Guide
Measuring for shutters might seem daunting at first, but with the right approach and tools, it’s a manageable DIY project that can save you money and ensure a perfect fit. Whether you’re considering interior plantation shutters, wood shutters, or exterior shutters for windows, accurate measurements are the foundation of a successful installation. Learn how to measure for shutters with our complete DIY guide. Get accurate measurements for interior plantation shutters, exterior shutters, and wood shutters. Step-by-step instructions, tools needed, and pro tips for perfect installation.
Why Proper Measurement Matters
Getting your shutter measurements right the first time prevents costly mistakes and ensures your shutters function properly. Poorly measured shutters can leave gaps, bind when opening and closing, or simply look unprofessional. Taking time to measure carefully will result in shutters that enhance both the functionality and aesthetic appeal of your home.
Essential Tools for Measuring Shutters
Before you begin, gather these tools to ensure accurate measurements:
- Steel measuring tape (at least 25 feet)
- Level (2-3 feet long)
- Pencil and notepad
- Calculator
- Straightedge or ruler
- Helper (recommended for larger windows)
Understanding Inside vs. Outside Mount
Inside Mount Shutters
Inside mount shutters fit within the window frame opening. This creates a clean, built-in appearance that’s popular with interior shutters and plantation shutters. Inside mounting works best when:
- Window frames are deep enough (typically 2.5-3 inches minimum)
- The window opening is square and level
- You want maximum light control
- The window trim is in good condition
Outside Mount Shutters
Outside mount shutters attach to the wall or window trim surrounding the opening. This option is ideal for:
- Shallow window frames
- Windows that aren’t perfectly square
- Exterior shutters and storm shutters
- Covering multiple windows with one shutter panel
Step-by-Step Interior Shutter Measuring Guide
For Inside Mount Interior Shutters
Step 1: Measure Width
- Measure the width at the top, middle, and bottom of the window opening
- Record all three measurements
- Use the smallest measurement as your ordering width
- Do not deduct anything – the manufacturer will account for operating clearance
Step 2: Measure Height
- Measure the height on the left side, center, and right side of the opening
- Record all measurements
- Use the smallest measurement as your ordering height
- Measure from the top of the opening to the windowsill or desired stopping point
Step 3: Check for Square
- Measure diagonally from corner to corner in both directions
- If measurements differ by more than 1/4 inch, note this for the manufacturer
- Check that the window frame is plumb using your level
For Outside Mount Interior Shutters
Step 1: Determine Coverage Area
- Decide how much beyond the window opening you want the shutters to extend
- Typically, add 1.5-3 inches on each side for good coverage
- Ensure shutters won’t interfere with window trim or adjacent fixtures
Step 2: Measure Total Width and Height
- Measure the total area you want covered
- Include any overlap onto the wall or trim
- Consider the mounting surface depth and any obstructions
Measuring Exterior Shutters
Functional Exterior Shutters
For exterior shutters that actually close over windows:
Width Measurement:
- Measure the window opening width
- Add 1-2 inches total for overlap (1/2-1 inch per side)
- For paired shutters, divide the total width by two
Height Measurement:
- Measure from desired top mounting point to bottom
- Typically extends from window head to sill
- Consider architectural proportions
Decorative Exterior Shutters
For decorative exterior shutters that don’t close:
- Width should typically be 25-33% of the window width per shutter
- Height should match the window height or extend slightly beyond
- Consider the home’s architectural style and proportions
Special Considerations for Different Shutter Types
Plantation Shutters
Plantation shutters require specific considerations:
- Louvered shutters need adequate depth for louver operation
- Consider louver size (2.5″, 3.5″, or 4.5″) when measuring depth
- Account for tilt rod placement and operation
- Measure around any window hardware that might interfere
Sliding Door Shutters
For plantation shutters on sliding doors:
- Measure the entire door opening
- Consider track space at top and bottom
- Account for door handle and lock hardware
- Plan for multiple panels that stack properly
Bay Windows and Angled Installations
Bay windows require special attention:
- Measure each section separately
- Note the angle between sections
- Consider how shutters will meet at corners
- May require custom fabrication
Common Measuring Mistakes to Avoid
Don’t Assume Windows Are Standard
Every window is unique, even in the same house. Measure each window separately, as settling and construction variations can create differences.
Don’t Forget About Obstructions
Check for:
- Window cranks and handles
- Light switches near the window
- Curtain rods or existing hardware
- HVAC vents
- Electrical outlets
Don’t Rush the Process
Take your time and double-check all measurements. It’s worth spending an extra 30 minutes measuring to avoid costly remake fees.
Recording Your Measurements
Create a systematic approach to recording measurements:
For Each Window:
- Location (e.g., “Living Room – West Wall – Left Window”)
- Width measurements (top, middle, bottom)
- Height measurements (left, center, right)
- Depth available
- Mount type (inside or outside)
- Special notes or obstructions
When to Consult Professionals
While measuring shutters is a DIY-friendly task, consider professional consultation for:
- Complex architectural features
- Historic homes with non-standard openings
- Hurricane shutters or security shutters requiring structural considerations
- Large or expensive installations
- Windows that are significantly out of square
DIY Installation vs. Professional Installation
DIY-Friendly Shutter Projects
Perfect for confident DIYers:
- Standard rectangular windows
- Interior plantation shutters on inside mounts
- Decorative exterior shutters
- Replacement shutters for existing installations
When to Hire Professionals
Consider professional installation for:
- Hurricane shutters requiring structural mounting
- Complex multi-panel systems
- Fire shutters with specific safety requirements
- Motorized or automated shutters
Tips for Different Shutter Materials
Wood Shutters
- Wood shutters may expand and contract with humidity
- Allow slightly more clearance in humid climates
- Consider the wood species and its movement characteristics
Vinyl and Composite Shutters
- More dimensionally stable than wood
- Can typically be measured for tighter fits
- Consider thermal expansion in extreme climates
Budget Considerations
Accurate measuring helps control costs by:
- Avoiding remake charges for incorrect sizes
- Minimizing waste and returns
- Ensuring you order the right quantity
- Preventing installation delays
Final Checklist Before Ordering
Before placing your shutter order, verify:
- All measurements are recorded clearly
- Mount type is specified for each window
- Special requirements are noted
- Hardware locations are marked
- Room for operation is confirmed
- Style and material preferences are documented
Maintenance Considerations in Measuring
When measuring, think ahead to maintenance needs:
- Ensure shutters can be fully opened for window cleaning
- Consider access for painting or refinishing exterior shutters
- Plan for seasonal adjustments or storm preparation
Conclusion
Measuring for shutters requires patience and attention to detail, but it’s well within the capabilities of most DIY enthusiasts. By following this systematic approach and taking careful measurements, you’ll ensure your new shutters fit perfectly and function properly for years to come.
Remember that while this guide covers the fundamentals, every installation is unique. When in doubt, consult with shutter professionals who can provide guidance specific to your situation. The time invested in proper measuring will pay dividends in the form of beautiful, functional shutters that enhance your home’s comfort and value.
Whether you’re installing interior plantation shutters for privacy and light control, exterior shutters for storm protection, or decorative shutters for curb appeal, accurate measurements are your first step toward a successful project. Take your time, measure twice, and enjoy the satisfaction of a job well done.
