Inspect the starting point
Describe old sealers, concrete paint, adhesive residue, stains and visible damage. Mention any persistent dampness or previous water entry. Those details guide the contractor's assessment and help identify whether further investigation is needed before a coating is appropriate.
Ask what preparation includes
The scope should describe the proposed method, work at edges and the repairs allowed for. Clarify dust management, protection of adjoining areas and waste removal. A prepared floor needs to suit the chosen system; the same method should not be assumed for every old surface.
Leave a clear process for unknowns
Old coverings can conceal damage. Agree how the contractor will show you new findings and discuss changes before proceeding with extra work. If the room is occupied, include access restrictions, nearby belongings and working-hour limits when arranging the assessment.
Questions about concrete preparation for epoxy.
Does a clean-looking floor still need preparation?
Appearance alone does not establish that a surface is suitable for bonding. The contractor needs to assess and prepare it for the specific coating system.
Can preparation remove dips or change drainage?
Surface preparation and correction of levels are different scopes. Describe the problem and ask whether separate assessment or levelling work is needed.
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