Garage Door Torsion Spring Comparison

Garage Door Repair | Broken Torsion Spring

One of the more common questions customers ask us is “What is the difference between oil tempered and galvanized springs?”  Of course, this is almost always followed up with “Which is best for me?”

Oil tempered and galvanized springs both serve the same purpose.  They provided the lifting power for opening your garage door.  Properly sized, torsion springs can hold your garage door open at virtually any point off the ground and make moving door as simple as opening a swinging door.

The difference between oil tempered and galvanized springs starts in the manufacturing process and continues through to the installation.  The oil tempering process heat treats the wire in the spring to better withstand static pressures.  That is, the spring is meant to hold the weight of the door stably when the door is open, closed, or any position in between.  Oil tempered springs are black and sometimes have a slight residue on them.  Oil tempered springs will oxidize or rust in wet climates.  Galvanized springs have a zinc coating bonded to them which makes them shiny and silver, but are not heat treated.  The zinc coating on galvanized springs keeps them from oxidizing.

Once installed, galvanized springs will stretch slightly, and should be adjusted after three to six months to avoid damaging the garage door opener.  Oil tempered springs hold their tension without stretching and do not require such an adjustment.

So the differences amount to the post installation stretch adjustments and the oxidation resistance.  Here in Arizona, oxidation is not a problem.  Thus, the choice is simple: we use oil tempered springs so we don’t have to return to the door and tighten the spring saving our customers the cost of a service call.

To find out more, contact Door Doctor West at 602-495-1555 or request a quote

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