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Field Guides & FAQs
Guides from Castle techs to help you diagnose noises, plan replacements, and keep every door and gate moving safely.
Troubleshooting
Loud Garage Door Noises
Grinding, squeaking, popping, or banging sounds – what they mean, what is actually failing, and when it becomes dangerous.
Troubleshooting
Garage Door Won’t Open
Step-by-step logic for a dead door: from remotes and GFCI to broken springs and opener failure.
Safety & Compliance
Garage Door Won’t Close
Photo-eyes, UL 325 behavior, and why forcing a non-closing door is an entrapment hazard.
Safety & Compliance
Springs: The MOST Dangerous Part of the Industry
Why DIY spring work is a straight line to the ER and how pros actually manage the stored energy.
Replacement Thresholds
When a Garage Door Becomes Unsafe to Repair
How to recognize when additional repairs are irresponsible and a full replacement is the only safe option.
Warranty & Compliance
Warranty & Compliance Policy – Castle Garage Doors
How Castle handles manufacturer warranties, labor coverage, and code compliance for garage doors and openers in San Diego County.