Gravesend moved into the play-off places after beating rivals Grays.
In blustery conditions the home side's well organised approach frustrated Gravesend until just before the break.
Good approach play from Stacy Long and Luke Moore on the left set up Liam Coleman, who took a deft touch with his left foot before curling the ball in.
Gravesend had to wait until the game's closing stages for their second goal when Charlie MacDonald bundled home after Omome Sodje's shot hit the post.
Grays Athletic: Bayes, Kamara (Turner 55), Cowan, Stuart, Bull, Williamson, Nicholls (Harding 66), Sambrook, Bodkin, Poole, Boylan (Fernandez 80).
Subs Not Used: Knowles, Comyn-Platt.
Booked: Poole, Fernandez.
Gravesend: Cronin, Ross Smith, McCarthy (James Smith 46), Hawkins, Slatter, Quinn, Long, Coleman (DeBolla 82), Opinel, MacDonald, Moore (Sodje 88).
Subs Not Used: Mott, Purcell.
Booked: Slatter.
Goals: Coleman 40, MacDonald 90.
Att: 1,071.
Ref: G Horwood (Gravesend).