Doing It Yourself
You can buy a door off a shelf and bolt it to your existing track. Plenty of people have. The problem in Petaluma is that most houses here went up between 1938 and 1988, with the bulk of the stock dating to the 1960s and 70s, and the framing around a lot of those openings was built to a size and a hardware style that's not what comes in a modern kit. A stock door often needs the jamb shimmed, the header reinforced, or the track spacing changed before it will hang square. If you skip that step, the door looks fine going up and then binds, rattles, or throws a cable within a season. We're not going to tell you it can't be done at home - we're telling you the measuring and the framing check is where most DIY installs actually fail, not the bolting.
Why It Happens Here
With median housing age around 1966 across this area, a large share of garages were framed for the door sizes and hardware standards of that era - narrower single doors, lighter panel weight, spring systems rated for far fewer cycles than today's. Petaluma's mild temperate climate means the wood in these openings hasn't dealt with hard freeze-thaw cycling, so a lot of original framing is structurally sound even 50-60 years on. That's actually good news: it means most of the correction work is fitting new hardware to solid old bones, not rebuilding rot. But it does mean an installer has to plan for a mismatch between what's actually in the wall and what a big-box door kit assumes, rather than assuming a clean modern opening.
How It Shows Up
You'll usually see it as a door that closes unevenly, an opener that strains audibly on one side, or a track that pulls slightly away from the jamb near the top. Sometimes it's simpler: a homeowner orders a standard-width door for a two-car opening that was actually framed a few inches narrower back when the house went up, and the install stalls until someone remeasures. Given the income and household numbers for this area, a fair number of buyers are also upgrading from a single door to a double, or adding an insulated door for the first time, which changes the weight the spring and opener have to handle. Getting that spec right before delivery day is most of the job.
