Skip to main content
No. of Recommendations: 0
apparently current systems use enclosed springs...

The old style is one coil spring on each side, stretched by cables and pulleys. Hopefully there is a safety wire running through the center of the spring so that if/when it snaps it can't go flailing around. If you have that style without the safety wires I think it is worth having those added.

The newer style is torsion springs mounted horizontally above the door on the inside of the header. The springs are still coils, one for each side, but instead of stretching they are twisted. The cables that lift the door get wound around drums at each end, drums that are attached to the springs. The entire mechanism is pretty much a unit.
Print the post  


Disclaimer - Please Read
A message about professional advice.
Useful Resources
Our Home Center has all you need to make buying and owning a home a great experience. Get or refinance a mortgage and much more!
What was Your Dumbest Investment?
Share it with us -- and learn from others' stories of flubs.
When Life Gives You Lemons
We all have had hardships and made poor decisions. The important thing is how we respond and grow. Read the story of a Fool who started from nothing, and looks to gain everything.
Contact Us
Contact Customer Service and other Fool departments here.
Work for Fools?
Winner of the Washingtonian great places to work, and Glassdoor #1 Company to Work For 2015! Have access to all of TMF's online and email products for FREE, and be paid for your contributions to TMF! Click the link and start your Fool career.