• How long has the company been in business?

• Will the contractor supply references?

• Is the contractor a member of the state and/or national trade association?

• Will the contractor evaluate the system before making recommendations?

• Is the contractor abreast of the modern construction techniques? Does he/she regularly attend seminars or other educational events?

• Is the contractor thorough in his/her explanation of all the options available to you?

• Will the contractor provide a written estimate and a formal contract?

• Will the contractor provide a certificate of insurance before you sign a contract and before any work is begun?

• Is the contractor licensed?