Extension Springs - FAQs & Troubleshooting

Extension springs help counterbalance the weight of the garage door by stretching along the horizontal tracks when the door closes. Correct spring selection depends on the garage door height, door weight, and spring configuration.

How to Select the Correct Extension Springs

The most reliable way to select replacement extension springs is by using the actual garage door weight and door height.

Extension springs are color coded, but color codes repeat every 100 pounds, so the color alone is not enough to identify the correct spring.

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Garage Door Extension Spring Color Codes

Painted spring tip colors indicate spring weight ratings. Because colors repeat every 100 pounds, always verify the actual garage door weight before ordering replacement springs.

• Blue: 40 lbs, 140 lbs, 240 lbs
• Red: 50 lbs, 150 lbs, 250 lbs
• Brown: 60 lbs, 160 lbs, 260 lbs
• Orange: 70 lbs, 170 lbs, 270 lbs
• Gold: 80 lbs, 180 lbs, 280 lbs
• Light Blue: 90 lbs, 190 lbs, 290 lbs
• Tan: 100 lbs, 200 lbs, 300 lbs
• White: 110 lbs, 210 lbs, 310 lbs
• Green: 120 lbs, 220 lbs, 320 lbs
• Yellow: 130 lbs, 230 lbs, 330 lbs

Example: A gold spring tip may indicate an 80 lb, 180 lb, or 280 lb rated spring depending on the garage door configuration.

Garage Door Extension Spring FAQ Guide

How Extension Springs Work

Extension springs stretch and store energy while the garage door closes. As the door opens, the springs contract and help lift the door weight through a cable and pulley system mounted along the horizontal tracks.

How to Weigh a Garage Door

Weighing the garage door is often the most accurate way to determine the correct extension spring size.

• Disconnect the garage door opener
• Secure the door safely
• Remove spring tension carefully
• Lower the door onto a bathroom scale
• Use two scales and a board for heavier doors if needed

Always use caution when handling heavy garage doors and extension spring systems.

Extension Spring End Types

Extension springs are available with several end configurations:

• Single loop: basic residential design
• Double loop: stronger and more durable residential option
• Clipped ends: heavy duty design commonly used on heavier doors

Why Replace Both Extension Springs?

Extension springs should always be replaced in pairs. Both springs experience the same cycle wear, and replacing only one spring can cause balance problems and uneven lifting force.

Replacing both springs together helps maintain proper garage door balance and reduces the likelihood of another spring failure shortly afterward.

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