The lead was to last for just over ten minutes, after which good work from Myles Weston allowed Ben Stevens to evade the attention of Town skipper Gareth McAuley before slotting the ball past Shane Supple, in the Town goal.
On the stroke of half-time Town restored their lead, with academy graduate Connor Wickham firing high into the roof of the Brentford net from just under 20 yards out after a deflection kindly fell his way.
It was not to be the only goal towards a closing period of a half, as Jordan Rhodes, who spent part of last season on loan at Brentford headed in a cross from Irishman Owen Garvan.
Town Side: Supple (R.Wright 46), D.Wright, Smith (Bruce 46), McAuley (Balkestein 46), Delaney, Walters, Norris (Garvan 60), Trotter (Shumulikoski 60), Martin, Wickham (Lisbie 60), Stead (Rhodes).
Match Photos from the game can be found by clicking here.