Good flooring starts underneath it

The order the work actually happens in — inspect, clean, check stability, check flatness, correct, recheck.

A floor can be flat without being level. Which one your flooring product actually specifies.

Useful for the right substrate condition — and the wrong answer for a floor that moves.

Fixing a localized dip without pouring leveler across a whole room — and when to do the opposite.

Inspecting a slab, reading cracks and joints differently, and choosing a correction that fits what you measured.

Measured correction, not making a slab look perfect — and what to recheck before you fill anything.

Movement comes before flatness. What to check on panels, seams and fasteners before adding any material.

What gets evaluated, why methods differ, and why the flooring system sets the acceptable result.