Slough fell behind in the fourteenth minute as wide player Romaine Walker, a constant threat all night, drilled a low shot past James Warrington from a quickly-taken corner.
The lead lasted just four minutes though, as Burnell beautifully controlled and finished a Sonner cross after good play from Coyne to spot his run.
Just six minutes later, Slough took the lead as Sonner latched on to a long ball forward, reaching it before onrushing Woods goalkeeper Derek Lewis, and playing it beyond him and just inside the frame of the goal from well outside the box.
Northwood missed a host of opportunities to level, having laid siege to the Slough goal for large parts of the first half, but Slough stood firm and retained the lead going into the interval despite several scares.
In the second half, Slough made sure of the win with further goals. Six minutes into the half, Sonner volleyed in a deep Stuart Swift free kick.
After such a good showing in the first half, Northwood’s threat waned, but Walker, along with full-backs Mensah and Marsh-Brown, still provided moments of threat, particularly for Alex Brown who coped well when dragged into the right-back position.
Walker fired into the side netting as Northwood looked to get back into the contest, but Sonner missed a glorious chance for his first Rebels hat-trick, firing wide after Murphy had played him in over the top.
Murphy forced Lewis into a save at his near post, but minutes later the three points were secured as Burnell followed up after Lewis had spilt a shot from Paul Coyne, tapping into the empty net.
A late reply from substitute Kurt Morlese, getting in front of his man to prod past Warrington, proved to be mere consolation for Northwood, who deserved better - but the result was right on the overall balance of play, and keeps Slough top of a very tight league.
Northwood Line up
Derek Lewis, Andrew Mensah, Ronayne Marsh-Brown, Lee Grant, Liam Fowler, James McCluskey, Jonathan Constant, Craig White (Sam Sharples 80), Oliver Hawkins (Kurt Morlese 73), Garry Senior (Ben Alexander 62), Romaine Walker. Subs not used: Scott Raper, Mitch Swain.