Garage Doors in Kettle's Beach, OntarioOpen on time.Every morning.

The route is the same and the counterbalance looks different. Extension springs stretch beside the horizontal tracks and pull through pulleys, so the technician examines each spring for stretch and a broken end, each pulley for a grooved wheel or a seized bearing, the cable clips, and whether a containment cable runs through the centre of each spring. Balance, reversal and photo-eye tests are unchanged.

Springs are inspected and lubricated during a tune-up, and the balance test tells us whether they are carrying the door's weight properly. Changing their tension is a separate, deliberate job: the door is clamped to the track, winding bars are used on a torsion spring, and the technician works from a stable position. If the balance check shows the springs need adjustment or replacement, you receive that as its own recommendation with its own quote.

In most cases it comes back better, because the reset includes truing the track, replacing worn rollers and correcting the misalignments that had been building unnoticed. The exception is a section creased by an impact: it may work perfectly well after the reset yet keep a visible dent, and the technician will tell you whether it is sound or worth replacing at some point. You are shown the door running before the visit ends.

The names describe the edge that grips the retainer and the shape of the part that meets the floor. A T-style seal has T-shaped edges that slide into slotted channels along the bottom rail. A bead seal has round edges for the rounder channels found on many older steel doors. A bulb, or U-style, seal is a larger tube that compresses further and suits rough or dished floors. The retainer on your door decides which one fits.

Manufacturers dab a colour on the end coil to indicate the spring's weight rating, which is a handy starting point. It is not the final word: a faded or repainted end coil tells you little, and the pair on an older door may have been a near match rather than the right one. The technician treats the colour as a hint and confirms the rating from the door's measured weight and the spring's own dimensions.