Relevant experience
A contractor experienced in occupied offices may not have the same strengths as one specializing in resinous food plants or healthcare.
Substrate responsibility
Ask who owns investigation, moisture testing, preparation and change-order decisions.
Schedule capability
Confirm staffing, after-hours availability, phasing and coordination with furniture or other trades.
Closeout
Warranty, maintenance instructions, spare material and product records should be part of project completion.
Commercial flooring decisions depend on the actual substrate, moisture conditions, traffic, cleaning regime, accessibility requirements, fire/building rules, manufacturer instructions and local code. This site is for planning and comparison, not installation instructions.