These garage door springs are mounted either above your garage door’s horizontal tracks or along your garage door’s sides. When the door opened and closed, these garage door extension springs can either contract or stretch to counteract the weight-balance of the door.
For residential garage door extension springs, you’ll usually find one extension spring located on each of the door’s sides. However, multiple springs can found on heavier residential garage doors or commercial doors.
One-Piece Garage Door Extension Springs
These types of springs will operate as a single piece. When your garage door opens, the top will move along tracks that located on the inside of your garage door. The garages door’s bottom will rise on the outside of your garage. In this case, the weight of the door counterbalanced by the extension spring’s pull against a connecting point (or pivot). One-piece garage doors are not popular in harsh weather climates since they don’t allow for weather-stripping.
Sectional Garage Door Extension Springs
When it comes to sectional garage door extension springs, these are the types of extension springs that are most popular in the U.S. These work by stretching parallel and above your garage door’s horizontal tracks, located on each side. The weight counterbalanced through the pulling on the garage door cables.
Both commercial and residential extension spring configurations are similar. However, with heavier commercial doors, you can have a kit that allows multiple extension springs to connect to each other.
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