Size Measurement Guide: What Every Homeowner Should Know

2024-01-05 6 min read Warren Garage Doors Team

# Size Measurement Guide: What Every Homeowner Should Know

Whether you're planning to replace an existing garage door or install a new one, accurate measurements are essential. Incorrect measurements can lead to ordering the wrong size door, installation delays, and additional costs. This comprehensive guide will walk you through everything you need to know about measuring for a new garage door.

Standard Garage Door Sizes

Before we dive into measuring, it helps to understand standard garage door dimensions:

Single Car Garage Doors

- 8' x 7': The most common size for single-car garages - 9' x 7': Popular for slightly wider openings - 10' x 7': Accommodates larger vehicles or additional storage space

Double Car Garage Doors

- 16' x 7': Standard size for two-car garages - 18' x 7': Extra width for larger vehicles or workshop space

Height Variations

While 7 feet is standard, doors also come in: - 6'6": Older homes or garages with limited headroom - 8': For taller vehicles like trucks, SUVs, and RVs

Essential Measurements You'll Need

1. Width of Opening

Measure the width of your garage door opening at its widest point:

- Measure from inside edge to inside edge of the door jamb - Take measurements at the top, middle, and bottom - Use the smallest measurement if they differ - Round down to the nearest inch

Pro Tip: If your opening is slightly larger than a standard size, don't worry. Garage doors are installed with weatherstripping that accommodates minor variations.

2. Height of Opening

Measure the height from the floor to the top of the opening:

- Measure on both sides of the opening - Take an additional measurement in the center - Use the smallest measurement - Ensure the floor is level; if not, note the difference

3. Headroom

Headroom is the distance from the top of the door opening to the ceiling or any obstruction:

- Minimum headroom for standard torsion springs: 12 inches - Minimum for low-headroom systems: 6-8 inches - Additional headroom may be needed for certain opener types

4. Side Room

The space on each side of the door opening:

- Standard requirement: 3.75-4 inches on each side - Additional space needed for some track configurations - Note any obstructions like pipes, outlets, or switches

5. Backroom

The depth of your garage from the door opening to the back wall:

- Should equal the door height plus 18 inches minimum - More space needed for opener installation - Consider vehicle length when planning opener placement

Special Considerations

Existing Door Replacement

When replacing an existing door:

- Measure the actual door in addition to the opening - Note the current track type (standard lift, high lift, vertical lift) - Check the condition of existing tracks and hardware - Document any modifications made to the original installation

New Construction

For new garage construction:

- Plan openings based on intended vehicle size - Consider future needs (larger vehicles, storage, workshop) - Account for interior finishing thickness - Ensure proper header and framing support

Non-Standard Openings

If your measurements don't match standard sizes:

- Custom doors are available for most non-standard openings - Expect longer lead times for custom orders - Costs may be higher than standard sizes - Professional measurement is highly recommended

Common Measurement Mistakes to Avoid

Mistake #1: Measuring the old door instead of the opening. Doors can be different sizes than their openings.

Mistake #2: Forgetting to check for level. An unlevel floor requires compensation during installation.

Mistake #3: Not accounting for weather stripping. Include existing weatherstripping in your measurements.

Mistake #4: Measuring to the outside of the jamb. Always measure to the inside edges.

Mistake #5: Ignoring obstructions. Light fixtures, pipes, and other obstacles affect track placement.

Why Professional Measurement Matters

While DIY measurement is possible, professional measurement offers several advantages:

- Accuracy: Experienced technicians know exactly what to measure and how. - Recommendations: Professionals can suggest the best door size and style for your needs. - Hidden Issues: A pro may spot structural or mechanical issues you'd miss. - Guarantee: Many companies guarantee proper fit when they do the measuring.

Schedule Your Free Measurement

Warren Garage Doors offers free, no-obligation on-site measurements for all garage door installations. Our experienced technicians will:

- Take precise measurements of your opening - Assess headroom, side room, and backroom - Check for any obstructions or special requirements - Recommend the best door options for your space - Provide a detailed, written estimate

Don't leave your garage door installation to guesswork. Call ${COMPANY.phoneFormatted} today to schedule your free measurement appointment. With ${COMPANY.yearsExperience.toLowerCase()}, we have the expertise to ensure your new garage door fits perfectly.

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