Garage Door Installation on the Sunshine Coast

What is published is door types: sectional, roller and tilt doors and the common opener types. Thom has trained across multiple brands and systems, but no door or opener brand is named anywhere on the Deadlock site.

An absent brand list is a documentation gap rather than a capability finding in either direction, so this page names no brand and makes no brand claim. Read the make off the opener housing or the label on the spring and give it on the call, which gets a straight answer faster than any list on a page could.

The door's weight is carried by springs, not by the motor. Torsion springs sit on a shaft above the door and wind up to lift it; extension springs run along the tracks either side and stretch as the door closes. Either way the spring is under high tension.

Both manufacturers are blunt about what that means for an owner. B&D states the spring is under tension at all times and may cause serious injury if interfered with by an inexperienced person, and that replacing garage door springs is not a DIY job, needing special tools such as winding bars and professional experience. Steel-Line states that adjusting spring tension is a dangerous procedure that may cause physical injury if improperly performed. Deadlock says the same in its own words.

Most torsion springs are rated at around 10,000 open-and-close cycles, which converts to roughly seven to ten years for an average home, and B&D's published spring cycle ratings run from 10,000 to 30,000 depending on the model. B&D publishes the conversion on a basis of three to four uses a day, one cycle being one full open and close.

An average across homes is not a schedule for any one door. A door worked well above that daily basis reaches the same rating sooner, which is why the interval below is answered by a count of openings rather than by the age of the door. On a two-spring door it is usually worth doing both, because they wear at the same rate.

The published service is a documented list rather than a look over: spring tension and balance, roller and track lubrication, hardware tightening, cable and drum inspection, and a test of the opener and its safety reversal, finishing with the door run by hand and under power.

Because the scope is published rather than described in general terms, the work can be checked against the list afterwards.

B&D publishes a balance check any owner can run: pull the release handle, usually a red cord, to disconnect the opener, lift the door halfway, and see whether it stays there. If it does not, the springs may need attention from a professional. That is a signal rather than a diagnosis; it says the springs want looking at, not what is wrong with them.

B&D's owner-level version of the safety-reversal test is a roll of paper towel under the door, and a door that does not reverse immediately on contact is a service call. Between services, B&D's owner-level upkeep for its own doors is an all-purpose machine oil twice a year, and in the same breath it tells owners never to adjust or replace a spring themselves.

B&D Australia recommends a service in the first 12 months and every two years after that, and yearly servicing for motorised doors or doors used frequently. Steel-Line recommends checking the operation every three to six months and a service every 12 months. Deadlock's own guidance sets an annual default, shortened to every six to nine months where the door runs many times a day.

Two of the three land on the same 12-month figure. What separates them is where a first service sits, whether a check goes in between, and what each does about a door in constant use: B&D and Deadlock each publish a usage exception that shortens the interval, while Steel-Line's guidance connects heavy use to wear without conditioning its interval on it. None is an Australian Standard and none is a regulatory requirement.