Second half goals from Adam Coombes and Rickie Hayles secured The Wings passage into the FA Cup 3rd Qualifying Round. After dominating the first period, Welling had to be patient but were rewarded with a more than workmanlike display.
Importantly Welling were out of the blocks quickly and they took the game to Whyteleafe. Adam Coombes low shot from a rebound caused confusion when the effort deflected off of Vernon Francis but keeper Luke Colquhoun saved well with his legs.
Rickie Hayles met a Della-Verde corner with an athletic header that bounced off of the artificial surface and over the bar.
Welling came agonisingly close to taking the lead when Coombes sent a smart ball through to Della-Verde who burst clear, he shot low but his effort came back off the inside of the post and was cleared.
Whyteleafe were struggling to get a grip on the game but they did have a half chance as Sam Clayton struck his free kick directly into the Welling wall before smashing the rebound over the bar.
But back came the Wings and Pierre Joseph-Dubois should have put Welling ahead. Fresh from his double on Tuesday night, he burst clear rounding Luke Colquhoun before striking an effort wide from an acute angle.
Welling were keeping Colquhoun busy as the stopper saved from the lively Coombes before producing an even better save from Della-Verde who looked destined to score.
Welling were in total control but just failed to capitalise on the chances that came and went.
Mitchell Nelson burst down the right and produced a cross for Coombes but his header lacked conviction.
Andrew Mensah struck a warning shot to The Wings as he hit an effort into the side netting. Before Coombes had the last chance of the half but his shot was deflected away.
Into the second half and early on Coombes had the ball in the back of net but his effort was goal disallowed.
After this Whyteleafe had their best spell of the match with Lewington making two fine saves, low down to his right.
But in the 70th minute, Welling broke the deadlock. A low corner from Della-Verde was met at the near post by Coombes who produced a neat deft finished.
Welling tails were up and Della-Verde shot wide before sub Dan Walker saw a shot saved.
The Hosts then had Owen Roberts sent off for a terrible tackle on Archie Johnson. Roberts rightly shown a straight red card for his wild lunge.
But with time ticking Welling secured there passage to the next round. On the stroke of full time, another Della-Verde corner was met this time by Rickie Hayles who headeded home unchallenged. Much to the delight of the travelling Welling fans.
That was mission completed, with a patient display that was also rewarded with a clean sheet, which would have pleased manager Mark Goldberg.
Welling now now have a week to recover before travelling down to Dorset to play Poole Town in the National South.
Welling United: Lewington, Nelson, Johnson, Fuseini, Hayles, Leacock, Joseph-Dubois (Hatton 90), Waldren, Coombes (Slabber 82), Morgan (Walker 68), Della-Verde. Unused Substitutes: Agu, Thompson-Martelly.