The door has suddenly gone heavy, won't lift, or drops fast
Why it happens
The springs balance the weight of the door, so the opener, or your arm, only does a little of the work. When a spring breaks, that whole weight lands on the opener or on you.
Why it matters
A home garage door can weigh from about 41 kg to over 227 kg. That's a lot of weight to catch by surprise.
Response
Stop using the door and call. Thom takes the load off safely and gets the door balanced again. On a two-spring door it's usually worth doing both, because they wear at the same rate.




