Christmas came early for the Rebels as they were gifted the opening goal in just the eighth minute thanks to an unbelievable own goal Gus Scott-Morriss.
The Hemel Hempstead defender passed the ball into the back of his own net with goalkeeper Craig King off his line and with not enough time to recover back to goal.
Jonathan North was called upon to make a fantastic save from Craig Fasanmade in the 25th minute after the striker rolled Joe Dandy and bore down on goal.
The game heated up just before the interval as the hosts nearly doubled their lead. Alfonso Tenconi had a double effort, with King making a brilliant save to deny him and then on the rebound his shot was just wide of the goal.
Slough continued to be a threat going forward in the second half and they finally doubled their lead in the 62nd minute.
The Rebels produced great link up play down the byline that included a brilliant nutmeg by Josh Jackman, who then charged into the penalty area and drilled the ball low and hard leaving King no chance of stopping it, after fine work from man of the match Matt Lench on his 150th appearance.
Five minutes later, Hemel were down to ten men after a disastrous challenge by Dan Wishart, who dived in with his studs up on Jackman.
A Slough break led to a good chance for Lench to kill the game off, but his shot was well saved by King.
Further indiscipline from the visitors saw them reduced to nine men late on. Cole Kpekawa sparked drama as he slapped Lench in the face in stoppage time.
The Rebels took a crucial win to boost their playoff credentials with a solid performance at Arbour Park. They face Chelmsford City away next Saturday knowing a win will prolong their slim hopes of snatching the final playoff spot.
Slough Town Line Up
- 1 Jonathan North
- 2 Josh Jackman
- 3 Freddie Grant
- 4 Edon Pruti
- 5 Joe Dandy
- 7 Kurtis Cumberbatch 18
- 8 Matthew Lench
- 10 Alfonso Tenconi 9
- 12 George Hunt
- 14 Scott Davies
- 15 Aaron Kuhl
Hemel Hempstead Town Line up
Craig King, Gus Scott-Morriss, Dan Wishart, Dominic Morgan-Griffiths, Jack Westbrook, Cole Kpekawa, Chris Paul, Sam Mantom (c), Craig Fasanmade, Charlee Hughes, Josh Nembhard. Substitutes: Pierre Fonkeu, Alfie Cerulli, Jacob Gardiner-Smith, Hamilton Bunga, David Saunders.