There are some garage doors that weigh way over 300 lbs. Over this planned-demic the supply chains dried up. Even now you can not order special springs needed for these heavy doors. This customer had tried for months to get the springs replaced with no luck. Apparently other garage door companies don't know how to handle these sorts of problems. The solution is to mount a third spring. Naturally this takes a bit of knowledge. In this garage the header is made mostly of drywall. So it was difficult to find a secure spot to mount the third spring bracket. Naturally knowing the weight of the door was essential.
Also, when three springs are used it is important to use springs that are rated to last decades. On all three springs.
last modified on: Tuesday, 2022-08-02 at 19:09:35