01
Verify current suitability
Confirm the company's service area and its experience with the kind of slate work you need. Ask for relevant references and examples of comparable projects. Check practical requirements appropriate to your location and project rather than assuming that directory inclusion answers every qualification question.
02
Discuss the actual scope
A company experienced in new installation may approach a small historic repair differently from a restoration specialist. Explain the building, roof condition, and access needs before requesting a proposal. Keep the directory as a starting resource and evaluate the current evidence supplied by the contractor. This helps turn a broad search into a shortlist suited to the actual job.