A slab cannot be nailed into, so the whole nail-down family is out before you start. What is left is glued, floated or set in mortar, and every one of those needs the slab to be flat enough and dry enough, which is a test, not a guess. The ranking assumes a ground-floor slab in a dry room.
Based on: dry living space · several rooms · a concrete slab · durability first · a professional install.
Stone-composite core: 100% waterproof and dimensionally rock-steady.
Foamed core: warmer, quieter and softer than SPC — and thicker.
Densest, hardest, most water-resistant mainstream floor — and the best wood-look plank made.
Solid hardwood. Anything floated over a slab that has not been moisture-tested; the floor is not the problem, the water under it is.
The full reasoning, the failure modes and the care schedule for each of these are on FlooringFAQ’s guide. This page is the decision; that one is the education.
This ranking assumed a typical version of the situation. Change the rooms, the budget, the subfloor or who is installing it and the order moves. The eight questions start with these answers filled in.
Your flooring choice is only half the equation. Installation, subfloor preparation, removal and transitions change the final price. Local professionals quote the same scope, and you decide whether to talk to any of them.
No obligation. You choose whether to contact the professionals who respond.