Commercial Garage Door Spring Repair

About commercial garage door springs

Springs do the heavy lifting on an overhead door. They carry the weight of the door so an operator, or a person on a chain hoist, only has to guide it. A commercial door is bigger and heavier than a home door and often runs many more times a day, so its springs work harder and wear out sooner. When one breaks, the full weight of the door lands on the cables, the operator and anyone who tries to force it.

Torsion, extension and barrel springs

Torsion springs sit on a steel shaft above the door opening. They twist as the door closes and unwind to lift it, turning cable drums at each end. Most commercial sectional doors use them. See how a torsion spring works. Extension springs run along the horizontal tracks and stretch as the door closes. They are found on some lighter overhead doors. Each one needs a safety cable through it, so a broken spring cannot fly loose. See how an extension spring works. Barrel springs live inside the barrel at the top of a rolling steel door. The curtain coils around the barrel, and the springs inside balance its weight. A tension wheel sets that balance. This is part of our rolling steel door repair work.

High-cycle springs for doors that run all shift

Every spring is rated for a number of open and close cycles. A standard spring on a door that runs dozens of times a day can reach that number fast. High-cycle springs are built to last through many more cycles, which means fewer breakdowns and fewer emergency calls. If a door at your building keeps breaking springs, ask about a high-cycle upgrade on the visit. Read more about spring cycle life and high-cycle springs.

What drives the cost of a commercial spring repair

• The spring type. Torsion, extension or barrel springs each take different parts and labor.

• The size and weight of the door. A heavier door needs larger springs.

• One spring or the set. A door with more than one spring may need the set replaced so the door stays balanced.

• Cycle rating. High-cycle springs cost more up front and last longer on a busy door.

• Other worn parts. Cables, drums or bearings that were damaged when the spring broke.

Your estimate is free, and you get one flat price to approve before any work begins.

Why staff should not replace a commercial spring

A wound spring stores enough force to break a hand or an arm. Releasing and winding it takes proper winding bars and training, and a commercial door adds more weight and more force. If a spring breaks, keep people and vehicles clear of the door, do not run the operator, and do not try to lift the door with a forklift. Call us and we will make it safe. Our emergency commercial garage door service runs around the clock.

How it works

Why facility managers call G Brothers