Moors boss Mark Yates made three changes from Saturday's 2-1 win over Woking.
Nathan Cameron, Joe Sbarra, and matchwinner against the Cardinals, Kyle Hudlin came back into the starting line-up.
It meant Jordan Piggott, Justin Donawa, and Adam Rooney all had to settle for a place on the bench against the Bees.
Kicking off a day later than scheduled, the behind-closed-doors game took a little while to get going as both sides looked to size each other up.
The only chance in the opening 15 minutes was a looping header from Moors' Sbarra. But in truth, the effort never looked like troubling Adam Parkes in the Bees goal.
And at the other end of the pitch, Ephron Mason-Clark's speculative long-range drive was always rising.
After a tepid start, Moors winger, Alex Addai suddenly put on the afterburners, racing to the by-line but his pull-back was well cut out.
From the resulting corner, Sbarra almost connected with Jordan Cranston's low delivery but the Bees backline were able to block and scramble the ball way.
Addai was lively on the wing, driving at Sam Beard, his deep cross found James Ball but the midfielder's cushioned header failed to drop kindly to Callum Maycock.
The winger appeared the most likely source for a goal, again he beat his man but this time he fired his low delivery down Parkes' throat.
Moors then felt they had a decent shout for a penalty when Tyrone Williams went down under a heavy challenge but the referee was unmoved.
And just before half-time, Addai's explosive effort cannoned off the woodwork from just outside the area, after good build-up play from Kyle Hudlin.
The framework was still shaking when Barnet's Courtney Baker-Richardson strode through the Moors defence but Ryan Boot stopped well with his legs.
A couple of big moments at the end of a largely uneventful half. The teams going in goalless at the interval.
HT: SOLIHULL MOORS 0-0 BARNET
Deadlock at the break but it didn’t take long for Moors to find the net in the second half as Ball thumped home on the angle after Sbarra had turned it into his path.
It was a resounding finish across Parkes and into the bottom corner, giving Moors the perfect start to the second forty-five.
Soon Addai’s jinking run, created uncertainty in the box, Hudlin jumped for it, Parkes failed to gather but the ball bounced off Lee Vaughan for a corner. Close call.
With 20 minutes to go, Yates opted for a double change as Rooney and Donawa entered the fold.
But it was Barnet who finished the game the stronger and it was Moors’ rear-guard who were called upon in the latter stages.
Williams and Nathan Cameron at the heart of the defence stood strong, winning the aerial battle against Barnet’s forward line.
And when the Bees did manage a shot on target in added time, Boot was on hand to parry away Tomi Adeloye’s powerful effort.
Ball had a chance late on to secure the points for the hosts but he was unable to keep his effort down and so 1-0 was how it stayed.
A workman-like performance from Yates’ men who are now nine games unbeaten at the SportNation.bet Stadium.
FT: SOLIHULL MOORS 1-0 BARNET