Versions of See prior versions of a law on LawServer 2024 Alabama Code 34-31-24. Only certified contractors to advertise, etc.; use of license; issuance of license 2022 Alabama Code 34-31-24. Performance of functions of certified contractor; testing or verifying duct air tightness 2021 Alabama Code 34-31-24. Performance of functions of certified contractor; testing or verifying duct air tightness 2020 Alabama Code 34-31-24. Performance of functions of certified contractor; testing or verifying duct air tightness 2019 Alabama Code 34-31-24. Performance of functions of certified contractor; testing or verifying duct air tightness 2018 Alabama Code 34-31-24. Performance of functions of certified contractor; testing or verifying duct air tightness 2016 Alabama Code 34-31-24. Performance of functions of certified contractor; testing or verifying duct air tightness 2015 Alabama Code 34-31-24. Performance of functions of certified contractor; testing or verifying duct air tightness 2015 Alabama Code 34-31-24. Performance of functions of certified contractor; testing or verifying duct air tightness 2014 Alabama Code 34-31-24. Only certified contractors to advertise, etc.; use of license; issuance of license 2013 Alabama Code 34-31-24. Only certified contractors to advertise, etc.; use of license; issuance of license 2010 Alabama Code 34-31-24 – Only certified contractors to advertise, etc.; certificate of qualification required for licensure