Half-time: Brentford 0 Blackburn 0
Struggling Brentford managed just two shots on target in a goalless first half at Griffin Park.
Defender Yoann Barbet forced Jason Steele to save from a free-kick, while Alan Judge also tested the Rovers keeper from distance.
Hope Akpan went closest for the visitors when his near-post header was tipped over the bar by David Button.
On-loan Everton striker Leandro Rodriguez started for the Bees – one of two changes.
Sam Saunders came in for Chelsea loanee John Swift, who was absent from the matchday squad.
Brentford (4-2-3-1): Button; Yennaris, Barbet, Dean, Bidwell; McCormack, McEachran; Woods, Judge, Saunders; Rodriguez
Subs not used: Bonham, Colin, Hogan, Kerschbaumer, Vibe, O’Connell, Canos