The match started 50 minutes later than the scheduled start due to heavy rainfall.
After referee Marius van der Westhuizen gave the go ahead for the game to start it was the visitors who started brightly.
Flyhalf Juan Kotze missed an early penalty opportunity and this spurred the hosts on.
Eighthman Zandré Jordaan made a great break and found centre Braam Gerber who put flying wing Senan van der Merwe away for the try.
Len Olivier missed the subsequent conversion and Boland started to find their rhythm.
Barely a couple of minutes later Van der Merwe caught an aimless kick by the Falcons and set off along the touchline similar to how Wallaby wing Israel Folau did in the first Test British and Irish Lions series. Van der Merwe backed his pace and left numerous Falcons defenders in his wake to score a superb individual try.
Olivier was wayward with his kicking again and the Boland lead 10-0 after 18 minutes, but he found the target with a penalty to extend the lead to 13-0.
Captain Franzel September barged his way over the line for the second week in a row and Olivier added the extras with a conversion.
With five minutes left before half-time the Falcons had yet to show any signs of threatening the Boland dominance, but scrumhalf Anrich Richter managed to burrow his way over the line to score a crucial try for the visitors.
Kotze finally came good with his kicking and belted the conversion over to narrow the gap to 20-7.
Half-time saw a change of jerseys by both teams with the Boland coming out in white and the Falcons reverting to their traditional red strip.
Unfortunately for the spectators neither team played any rugby in the second stanza and the quality of play worsened along with the visibility due to the failing light.
Kotze missed yet another penalty and the scorekeeper remained untroubled until the end of the match, with Boland recording a 20-7 victory.
Neither coaches would have been impressed with the play on the day, but Loffie Eloff would have been grateful of the fact his charges secured their third win on the trot.
The Falcons remained among the basement dwellers of the First Division, still searching for their first victory.
Boland face the Eastern Province Kings next, and will know that a complete 80 minute performance is a prerequisite for any chance of winning in Port Elizabeth.
Scorers:
Boland Cavaliers
Tries: Senan van der Merwe (2), Franzel September
Conversion: Len Olivier
Penalty: Len Olivier
Falcons:
Try: Anrich Richter
Conversion: Juan Kotze