Duffy joins the company from Lex Commercials, a division of RAC plc, where he has been managing director since 1997.
The company said Duffy's main objectives as managing director of RAC Auto Windscreens will be driving continued improvements and growing market share by developing broader and deeper customer relationships with the fleet and insurance industries.
Duffy said: 'RAC Auto Windscreens offers a first class service to individual motorists and corporate customers in the fleet and insurance sectors.
'I have inherited a sound platform to build upon with a strong team and an excellent set of customers. This is an exciting time to be joining the company and we have ambitious plans for the future.'