LOAN WATCH: Lafayette scores as Wings earn crucial point
Lafayette drew the Wings level on the stroke of half time as he played the whole 90 with Welling now above their opponents on goal difference going into the final day.
Fellow striker Zane Banton was also on target for Hemel Hempstead as they were beaten 3-1 by Whitehawk in the Conference South on Saturday.
Danny Fitzsimons had the whole game as Brackley Town kept alive their Conference North survival hopes with a 2-1 win at Hyde.
Brett Longden had 90 minutes as St Neots Town defeated Chippenham Town 3-0 in the Southern League Premier Division to move back into the the play-off places with one game to go.
Winger Kynan Isaac was on target for Banbury United as they kept their faint hopes of avoiding the drop by beating Histon 4-0.
Meanwhile, midfielder Ian Rees played 75 minutes for Hitchin Town as they beat Burnham 4-0 in the Southern League Division One Central.