Eight fire engines and around 60 firefighters were called to a grass fire on Launders Lane in Rainham.
Mixed recyclables and shrubland in a derelict landfill site covering an area of five hectares were destroyed in the fire. There were no reports of any injuries.
Station Commander Verona Clarke, who was at the scene, said: "Crews worked hard in very hot, challenging conditions to tackle this fire which covers a significant area.
"This was a protracted incident and firefighters were on scene into the weekend damping down deep seated pockets of fire."
The Brigade was called at 1321 and was under control by 2007. Fire crews from Havering, Poplar, Barking, Hornchurch, Wennington and surrounding fire stations were at the scene, along with colleagues from Essex Fire and Rescue service.
The cause of the fire is under investigation.