A technician in black gloves replaces a roller on a brown garage door.

Union City, Alameda

Roller Replacement for Union City's 1970s-80s Garage Doors

Union City's housing went up mostly around 1979, decades after Alameda's older stock - which means a different generation of steel rollers wearing out. Here's what that job looks like.

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On the truck

What Is on the Truck

Union City's housing stock centers on 1979, a good decade and a half newer than the older streets closer to the bay.

Open-bearing steel rollers

That build era usually means steel sectional doors on galvanized steel tracks, running on 7-ball or 10-ball rollers with open bearings - not the sealed nylon rollers that show up on later replacements. We carry both.

Stem length varies by door

For a door from this era, the stock roller is often a plain galvanized steel ball-bearing roller, sized to the stem length the original builder used, which varies more than people expect once you're dealing with a door that's forty-plus years old. We also bring nylon rollers with sealed bearings as the standard upgrade, since most homeowners replacing rollers on a door this age want quieter operation and don't want to be back in this position in five years.

Roller gauge match

Stem length and roller diameter get checked against the existing track gauge before anything goes on the door - guessing on stem length on an older track is how you end up with a roller that binds. What we don't carry on the truck: specialty rollers for doors we haven't seen, like unusual European track profiles or custom architectural doors. If a Union City door turns out to be one of those, that's a return trip with the right part, not a same-visit fix.

Watch-outs

Where This Job Goes Sideways

The trouble on a 1979-era door isn't usually the roller itself - it's the track. Steel track from that period has had over forty years to pick up dents, rust pitting, or a slight bow from a car bumper tap years back. Swap a worn roller into a bent track and it'll ride rough for a week and fail again.