Roller door repairs in the Top End
Start with the balance. Steel-Line says a roller door that will not stay up, rolls up loosely, makes the motor strain, is hard to open or slams shut is out of balance, and a professional should adjust its tension and then re-check it.
In Darwin there is a second suspect: the fixings. The NT Government's inspection guide says humidity, heavy rain, strong winds and long dry periods can loosen bolts and fixings over time, and that corrosion of brackets and bolts is one of the things to look for each year. A guide pulling away from its bracket can make a door scrape and jam.
Never adjust a roller door spring yourself
Steel-Line warns that tensioning a roller door yourself risks serious injury or death, and that loosening the U-bolts can release the spring and drop the door. On sectional doors its manual says that if a spring breaks, do not attempt a repair. Keep clear and tell us the job.
After a storm
If a door has been pushed out of its guides by wind, leave it. B&D says not to lift a door back onto its guide rails yourself, because springs or cables may be broken. Chamberlain says to use the manual release only with the door fully closed where possible, because a door with weak or broken springs can fall fast.
Photograph the damage before anything is moved, and note whether the curtain, the guides or the frame took the hit.
Repairs around Darwin
Before November
Steel-Line notes that cyclones can reach the northern coast from November to April. A service in the dry season leaves time to fix what it finds.
Wind locks and clips
On a wind-rated roller door, ask the door specialist to check the locks, clips or lugs that hold the curtain in its guides, as well as the springs and motor.
Wiring
Plugging an opener in is not electrical work under NT law. Any new power point needs a licensed electrician, who issues a certificate of compliance.
What you can check yourself
You can
- Look over the guides, brackets and bolts for rust from the ground
- Keep grease and oil out of roller door guides
- Test that a sectional door's opener reverses when it meets an obstruction
Leave to a door specialist
- Spring tension and balance
- Replacing rusted guides, brackets or bottom rails
- A door off its guides after a storm
What we would do
Ask for the service report in writing, with photos of anything rusted. If a guide bracket is corroding now, it is a dry season job; left until a cyclone watch, it is a problem with no time to fix it.