A robot can clean brilliantly and still be the wrong choice if it cannot move between the rooms in your home. Threshold performance depends on more than a quoted height: the shape of the lip, whether the transition has one or two levels, the approach angle and the robot's traction can all affect whether it actually crosses successfully.
Measure the highest vertical point and record whether the transition has one step or two.
Treat a manufacturer maximum as a claim, not a promise for every threshold shape.
Independent exact-model crossing evidence is stronger than a feature name or specification.
Obstacle recognition and threshold climbing are different capabilities.
These are starting points, not a universal ranking. The personalised matcher can promote a different robot when your home gives different requirements more weight.Starting points only — Home Fit can change the order for your home.
A strong current option to investigate because Roborock publishes a high double-layer threshold claim, but RightRobot does not currently record an independent exact-model crossing result.
A current premium option with a documented high double-layer manufacturer claim; independent confirmation is not recorded here.
A current alternative with a manufacturer-stated StepMaster threshold capability that still needs home-specific caution.
A premium ProLeap comparison whose quoted maximum should not be treated as an independently verified result.
| Robot | Claimed threshold capability | Independent evidence | Single / double transition | Current UK route | Evidence confidence |
|---|---|---|---|---|---|
| Roborock Saros 20 | Up to 8.8cm (double-layer manufacturer claim) | No independent crossing result recorded here | Double-layer claim | £998.99 via Roborock UK | Manufacturer claim only |
| MOVA Z60 Ultra Roller Complete | Up to 8cm (manufacturer claim) | No independent crossing result recorded here | Single/double not distinguished | £959.00 via MOVA UK | Manufacturer claim only |
| MOVA V50 Ultra Complete | Up to 6cm (manufacturer claim) | No independent crossing result recorded here | Single/double not distinguished | £879.00 via Currys | Manufacturer claim only |
| Dreame X50 Ultra Complete | Up to 6cm (manufacturer claim) | No independent crossing result recorded here | Single/double not distinguished | £599.00 via Currys | Manufacturer claim only |
A quoted maximum comes from the manufacturer unless the independent-evidence column explicitly says otherwise.
Record the vertical rise, width, edge shape and approach space. Measure each stage separately when the transition has two levels.
A double transition can let specialist lifting hardware climb in stages. That does not mean the same robot will clear a single vertical lip of the combined height.
A hard, sharp door bar and a compressible rug edge present different traction and approach problems, even at similar measured heights.
Cameras and object recognition may help navigation, but crossing depends on chassis movement, wheels, traction and geometry.
A small fixed ramp may be safer and cheaper than choosing a flagship around one transition. Check door clearance and trip risk before installing one.
Add the transitions in your home so suitable robots can be assessed against the same needs.
Find suitable robots →Measure the vertical rise at its highest point, note the width and shape, and record whether it is a single lip or a two-stage transition. A sharp edge can be harder than a rounded transition of similar height.
Not necessarily. Obstacle avoidance concerns recognising and routing around objects; climbing depends on chassis movement, wheels, traction and the shape of the transition.
A robot can gain capabilities and still become a worse buy for a particular household if those capabilities cost money without solving that household's problems. RightRobot keeps evidence, Home Fit and current shopping routes as separate layers so the recommendation can explain both fit and value.