Assistant manager Anthony Williams hailed a solid team performance as Crawley kept their first clean sheet in League One in over two months.
Despite missing first choice central defensive pairing Kyle McFadzean and Claude Davis Reds were able to restrict Colchester to only a handful of openings as they ran out 3-0 winners.
Mark Connolly capped a dominant display at the back with his maiden senior goal while Billy Clarke and Nicky Adams wrapped up a first home league win since October in the second half.
Williams said: "It is always nice to pick up points at home. We started off extremely well and then stuck in there and worked hard as a team to get our just rewards.
"To get a clean sheet on top of that was very pleasing. Sometimes you have to ride your luck a but and we did at times but on the other hand we could have been 2-0 up inside five minutes.
"Everyone worked hard for each other and the most pleasing thing was that we looked very solid."