Glamorgan started the day on 41-2 and were almost strokeless for the opening stages as Ul Hassan and departing captain Sam Northeast saw off the initial spells from Tom Bailey and Balderson.
Northeast looked settled for his 21 when Jack Blatherwick had him given lbw in the 20th over of the day, prompting a standing ovation from the Sophia Gardens crowd as tribute was paid to the Kent-bound batter over the public address for his successful four years with the county.
Ul Hassan started to get his off-drives away and seemed set for a hard-earned 50, but fell for 45 as he reverse-swept Tom Hartley to a diving Keaton Jennings at point.
Glamorgan moved ahead with four wickets down but with more balls keeping low, Balderson then got Lancashire dreaming of a day off with a double strike.
He appeared to be appealing for leg-before against Kiran Carlson on eight, but the ball lobbed to Jennings at slip and umpire Tom Lungley decided it was inside edge onto pad.
Billy Root, who has been offered a new contract, guided his first ball from Balderson for four but was leg-before two balls later, meaning four wickets had fallen for 34 either side of lunch.
The ultra-experienced pair of Colin Ingram and Chris Cooke halted the slide with a stand of 50, but Tom Aspinwall had Ingram lbw for 37 with one that skidded through and Timm van der Gugten slapped the same bowler to point.
Balderson’s fourth wicket came with the second delivery of the new ball as Mason Crane was lbw for a brisk 23, including five fours.
Cooke hoisted Balderson over mid-wicket for six to bring up his 50 but holed out off Bailey, leaving Lancashire to score at 5.1 per over if they wanted an extra day off.
Luke Wells (19) started expansively before driving van der Gugten to mid-off, but Jennings launched him over mid-on for six before taking 19 off a Harris over.
His runs came off just 33 balls and included three sixes before he chipped Crane to mid-wicket, while Josh Bohannon hammered a quick 33 in poor light.
Northeast sent down the final over to mark his departure as Lancashire won the match but Glamorgan took the season’s honours.
