Frequently Asked Questions

Most repairs take 45 minutes to 2 hours. A standard spring replacement is about an hour. Cable and roller work adds 30-45 minutes. We don't rush, we don't dawdle. Our techs are trained journeymen who've done this hundreds of times. In Santa Clarita and Riverside, where summer heat can hit 105 degrees, we schedule morning appointments when possible so you're not waiting in a hot garage. We'll be there when we say.

Yes, we need an adult present to approve the quote before we begin work and to test the door with us afterward. We've learned the hard way that a door that "seems fine" to a tech might hit differently for the person who uses it daily. If you can't be there, a trusted neighbor or family member works fine. We don't start without authorization and we don't leave without a signature confirming you're satisfied.

We offer same-day service across most of our California territory, including Los Angeles, San Diego, San Jose, and Sacramento, when you call before noon. We keep a full inventory of springs, cables, rollers, and openers on every truck so we're not running to a warehouse. In more remote areas or during busy seasons, next-day is the standard. Either way, we'll tell you exactly when we'll arrive, not a four-hour window.

We install and service Clopay, Amarr, and Wayne Dalton doors regularly, and we stock parts for all major brands. Clopay's Gallery and Classic lines are popular in Woodland Hills and Santa Clara for their insulation value and clean looks. Amarr makes excellent wind-load doors for areas with Santa Ana winds. Wayne Dalton's pinch-resistant designs are a good choice for families with kids. We don't push one brand, we match the door to your house, your budget, and your climate.

Genie openers are reliable, well-supported, and we install them often. Their chain-drive and belt-drive units both carry solid warranties, and parts are readily available in California, which matters if you need service five years out. We also service and install other major brands. The opener that lasts is the one installed level, with proper force settings, by someone who knows what they're doing. That's our part.

We can source parts for most garage doors made after 1990, even if the original manufacturer is out of business. Springs, cables, rollers, and hinges are largely standardized. Panels and custom hardware are harder for discontinued lines. In San Francisco and older Los Angeles neighborhoods, we see a lot of wood doors from the 1970s and 1980s, we fabricate custom parts when needed or help you transition to a modern door that fits the character of the house.

Yes, California requires a C-61/D-28 (Garage Door and Automatic Gate) contractor license for any job over $500. We're state-licensed, insured, and bonded. That license means we've passed background checks, proven our experience, and carry the required insurance. If a handyman offers to fix your springs for cash, you're taking a risk, no recourse if something goes wrong, and no warranty that holds up. We carry our license number on every invoice and every truck.

A legitimate garage door company carries general liability insurance and workers' compensation. General liability protects your property if we damage something. Workers' comp protects you if a tech gets injured on your property. We carry both, and we'll provide a certificate on request. In 40 years, we've never had a claim, but we pay for the coverage every year because Your Home First means we're prepared for the worst even when it doesn't come.

Check the Contractors State License Board website at cslb.ca.gov, enter the license number, and confirm it's active and in good standing. Look for the C-61/D-28 classification specifically. Check how long they've held the license, a company that's renewed for decades has survived complaints and economic cycles. Mainspring has been licensed continuously since 1984. We encourage you to look us up. A company with nothing to hide doesn't mind being checked.

A garage door emergency is when the door won't close and your home is unsecured, when it's stuck open or closed with your car trapped inside, or when a spring or cable has failed in a way that makes the door dangerous to operate. A door that slams down, hangs crooked, or has a visibly broken spring is a safety hazard, don't try to force it. We offer emergency response across California, and we treat urgent calls seriously. Call (855) 574-1819 and we'll get someone out fast.

We can usually come today if you call before early afternoon, especially in Los Angeles, San Diego, San Jose, and Sacramento. We keep emergency slots open because springs don't break on a schedule. In Santa Clarita, Riverside, and Fresno, same-day depends on routing, but we always prioritize stuck doors and security issues. We'll tell you honestly if it's today or tomorrow, and we'll be there when we say. No ghosting, no three-hour windows.

No, it is not safe. A standard garage door weighs 150-250 pounds, and the springs carry that entire weight. When a spring breaks, the opener or your arms are trying to lift a dead weight that can slam down without warning. The cables are under extreme tension too. We've seen serious injuries from homeowners trying to muscle through a broken spring. This is one of those times to call a trained professional. We handle high-tension components every day, with the right tools and knowledge.

We warranty our repair labor for 90 days, in writing, no arguing. That's The Keystone Standard. If a part we installed fails or something isn't right, we come back and fix it. No paperwork battle, no "read the fine print." Parts carry their own manufacturer warranties, springs typically 3-7 years depending on cycle rating, openers 1-5 years. We explain all of this before we start. Standing behind it means if it's not right, we make it right.

New door installations carry The Keystone Standard, 90 days on our labor, plus the full manufacturer warranty on the door, springs, hardware, and opener. Clopay and Amarr both offer limited lifetime warranties on certain door components for original homeowners. We register your warranty with the manufacturer and give you copies of everything. In 40 years, we've learned that a warranty is only as good as the company behind it. We're still here, still answering the phone, still honoring our word.

We guarantee a scheduled arrival window, not a vague "sometime Tuesday." When we set a time, we keep it. If we're running late due to traffic or a job that went long, we call you, we don't make you call us. This is part of Every time, the 400th job gets the care of the first. Our customers in Woodland Hills and Santa Clara have busy lives, we respect that. We'll be there when we say, or we'll tell you exactly why and when to expect us.

You call us, we come back, no arguing. That's Standing behind it. We've been in California since 1984, we plan to be here another 40 years, and that only works if our customers trust us. If the door doesn't run quiet, if something feels off, if we missed a spot, we want to know. We train apprentices into journeymen, sponsor the county fair and the church roof fund, and answer the phone with a person, because a company that plans to be in town in thirty years acts like it. Your satisfaction is the only measure that matters.

Written by the team at Mainspring Garage Door Co. of California, serving Los Angeles, San Diego, San Jose, San Francisco, Sacramento, Fresno, Long Beach, Riverside, Woodland Hills, Santa Clara, Santa Clarita, and Santa Ana since 1984. Named for the spring that powers a watch, and the springs that carry your door's entire weight. The part that moves everything.