Within a few minutes of kick-off within a few minutes Welling carved out the opening chance. The ball was swung in from the right and reached Paul Booth, eight yards from goal but he could only shoot against the legs of Jake Whincup. The ball rebounded to Slough skipper Steve Daly, whose clearance skimmed the outside of the post.
The Wings had the better of the half in terms of territory, but it was Slough who took the lead with half an hour played. A high cross was played into the box and Tony Browne was adjudged to have shoved Matt Seedel, leading to the award of a penalty which Glen Harris dispatched.
Welling hit straight back within six minutes. Jamie Day's free kick was headed back across the box for Lee Spiller to volley home from close range.
Instead of settling the visitors, Slough regained the lead on 42 minutes as Daly smashed home a volley magnificently from Harris’ right wing cross to make it 2-1.
Then, in the final minute of the half, Welling failed to clear and after Seedel’s route to goal was blocked, Josias Carbon was denied by keeper Darren Randolph but the ball fell to Harris, who poked home his second goal of the game.
In the second half, the Rebels cut through the Wings defence time and time again and it seemed only a matter of time before they would score a fourth goal.
And on 63 minutes, Ryan Spencer played a low ball into the box which Seedel dummied for Carbon to fire back across Randolph and into the bottom corner.
Carbon went close to adding another, with Randolph making a good save low to his right, whilst Whincup had only one serious save to make, backpedalling to tip the ball over the bar.
Welling United Line up
Darren Randolph, Kevin Watson, Gareth Street, Ian Wiles, Tony Browne, Jamie Day, Danny Slatter (George Lay 65), Lee Spiller, Tommy Tyne, Paul Booth, Karl Beckford. Unused substitutes: Narada Bernard, Danny Skinner.