Two goals either side of half time by centre forward Lerone Plummer gave Blackfield the points.
A great cross by Adam Tomasso found Plummer who inextricably placed the ball over the bar from four yards out.
Paulton lost left back Camen Harvey and in a rejigged attack Dale Evans's found sub Ryan Gay whose shot was blocked by keeper Lewis Noice.
The Watersiders came out firing and added a second as Liam Robinson drove from the edge of the box and Rovers stopper Rob Brown did well to parry however the poacher Plummer was on hand to tuck home.
Liam Monelle fired wide after a beat Paulton move involving Joe Hillard and Sam Hedges. Monelle blasted a goal back on 56 minutes after a fine run from the left from Aysa Corrick.
Brown then saved with his foot from Robinson and from then on Rovers piled on the pressure. The influential Monelle was clattered and knocked unconscious and recovered to be strechered off the field.
Ten minutes were added as Rovers saw shot from Withey deflected and Trey Anderson's shot kicked off the line by a visiting defender.
Star man of the match - Liam Monelle (Paulton Rovers)
Entertainment Value 3 out of 5