CHALFONT kept their fifth clean sheet in a row to stretch their title grip to 15 points.
The Saints heaped more relegation misery on struggling Kentish Town and moved to within three possible games of lifting the title.
After late drama in their last two wins, Chalfont opened the scoring on 35 minutes when Daniel Hughes (pictured) headed in an Adamson Ajayi cross to give Danny Edwards' side the lead.
A dominant display was capped when Charlie Connor netted the second on the hour mark.
Chalfont have a week to rest before travelling to Broxbourne Borough next Tuesday (5/4).
SAINTS: Oliver, Cumber, Walsh, Carroll, Okimo, Williams (Sheehan 67), Stack (Eboyi 77), Guei (Jeffery 85), Connor, Hughes, Ajayi.