Second failure: an assembly wrong for the room, fixed by specifying the rating first
Never accept a bare claim that something is waterproof. Read the exact IP rating off the product page and match it to where the mirror hangs. The EnoLED 24V Glow67 IP67 strip is listed for wet locations; confirm its rating, voltage, output and end-seal requirements.
The rating on the tape covers the tape. It says nothing about cut ends, connectors, joints behind the mirror, the driver's location rating or the backing. The whole assembly has to suit the position, and IP20, IP65 and IP67 compared sets out what each covers.
Whether a spot counts as dry, damp or wet is a code question, not a preference, and the electrician answers it against local requirements. If the mirror sits near a shower or tub, ask LED Club to look at the whole assembly. The range for this room sits in the bathroom collection.
Third failure: a driver with nowhere legal to sit, fixed by placing it before the wall closes
Decide the driver position while the cable route can still change. A driver sealed into the cavity behind a mirror is unreachable, unventilated, and possibly wrong for that location rating; a vanity cabinet or an accessible void with a hatch is usually better, and dry, damp and wet location drivers explains those ratings. Heat comes off LEDs and drivers in normal use, so allow whatever clearance the instructions call for, and mark the cable route before anything is closed up.
Which unit goes there is arithmetic. Multiply the watts per foot on the strip's page by the footage that will sit on the mirror back, then carry current headroom of at least 20 percent above that result, with the strip figure and the driver's rated output both confirmed against the published specifications. That number, four segment lengths, the jumpers between them and one cable run are the whole parts list.
Mounting, wiring and the line-voltage handoff
Clean and dry the back of the mirror to whatever the mounting instructions for your strip require. Many strips can be cut at their designated points and rejoined with a compatible connector or by soldering, depending on the product. Verify yours on its own page. Run four segments joined with wire jumpers rather than bending tape around a corner.
A channel is optional here and often skipped on a thin mirror back. Where it fits, it helps dissipate heat and holds the run straight. It reduces but does not guarantee dot visibility, which also follows from LED density, channel depth and the lens.
Take every segment back to the driver in parallel, never one off the end of another, and hold a single voltage across the chain so a 24V strip meets a 24V driver. Then stop. Nothing here authorizes work on the building's wiring. A hardwired driver, a junction box, cable buried inside a wall, or any switch and dimmer plate is a licensed electrician's work, done to local electrical code, to the NEC where relevant, and to the manufacturer instructions. The breaker comes off before a connection is touched, and no live line-voltage connection is ever probed or tested.
Commissioning the backlit bathroom mirror before it goes on the wall
Bench-test first. Lay the mirror face down on something padded, power the run at low output, and look for a dead segment, a reversed pair or a bad joint. Trivial now, miserable later.
Then hold the mirror at its finished gap and check the halo against the real wall, look for it in the shower glass, and only then fix the cleat.
If a dimmer or controller is going on this run, the strip, the driver and that device each carry published compatibility information, and it is that rather than the shared word dimmable that decides whether the three belong together.