J.L. Roberts Mechanical Contracting, LLC, is a full-service licensed and bonded, mechanical contracting company with strong ties to the Central Mississippi area. In business over 50 years, J.L. Roberts has complete capabilities in plumbing, HVAC, Process Piping and more. We have extensive experience in both the private and public sectors delivering quality construction projects through both plan & specification and negotiated design/build methods.. Plumbing Contractors