Use a dry microfibre mop for routine cleaning and a barely damp one with a pH-neutral hardwood cleaner for anything more. Never use steam, never use oil soaps or wax polishes, and never let water sit. Engineered hardwood has a real wood surface, and what damages solid wood damages it just as quickly.
The routine that actually works
Sweep or dry mop two or three times a week in traffic areas, more with pets. Vacuum weekly with the beater bar switched off. Damp mop monthly, or when the floor genuinely needs it, using a spray-and-wipe method rather than a bucket. The mop should feel barely damp to the hand, not wet.
What to avoid, and why
Steam mops. Steam forces moisture through the seams and into the core. Most manufacturers void the warranty over it, and the damage is not reversible.
Oil soaps and wax polishes. These leave a film that builds up, dulls the finish and makes eventual recoating difficult because nothing adheres to it properly.
Vinegar and other acids. A common piece of internet advice that etches polyurethane finishes over time.
Beater bars. Fine on carpet, abrasive on wood.
Why your floor looks cloudy after mopping
In most of central New Jersey this is mineral deposit from hard water rather than dirt, which is why scrubbing harder makes no difference. Your water utility publishes an annual water quality report that tells you what is in your supply. The fix is less water and the right cleaner, or distilled water if the problem is persistent.
Dealing with scratches
Light surface scratches in the finish can often be handled with a manufacturer touch-up product. Anything that has gone through to the wood needs more than cleaning. Whether an engineered floor can be sanded at all depends on wear layer thickness: 3mm or more can usually take a refinish, under 2mm cannot.
Protecting it day to day
Felt pads under every furniture leg, checked annually because they wear and fall off. Mats at exterior doors, since grit tracked in is the main abrasive. Keep indoor humidity reasonably stable, because engineered wood moves less than solid but still moves. Trim pet claws.
Frequently asked questions
Can I use a Swiffer-type product?
Dry pads, yes. Wet pads depend on the solution; check it is pH neutral and made for hardwood rather than a general floor cleaner.
How often should I deep clean?
For most homes, once or twice a year with a manufacturer-approved product is plenty. Over-cleaning wood floors causes more problems than under-cleaning.
Is engineered hardwood harder to clean than solid?
No. The surface is the same material with the same finish. The difference is underneath and does not affect cleaning.