The American joins the club from Alaska Aces of the ECHL where last season he played 62 games where he scored two goals with 10 assists.
Prior to joining the Aces the 25-year-old also spent time with Colorado Eagles and Cincinnati Cyclones.
Stewart said: “In Dax we are getting a competitor – a guy who lays it on the line every night and a guy who takes pride in doing his job night-in and night-out.
“He’s a big body, who defends really well, and brings a very physical type of game to our back-end. Everyone I spoke to about this kid couldn’t say enough about his character and willingness to do whatever it takes to win.
“He will log big minutes for us back there five-on-five and on the penalty-kill.”
Lauwers added: “I’m excited to be playing for the Blaze this season. It’s always been a dream of mine to play hockey professionally overseas.
“Coach Stewart and I have had some great conversations over the phone about the upcoming season and I’m confident that Coventry will be a tremendous place to spend the next year on and off the ice.
“I have been blessed with my hockey career so far. I’ve been awarded the opportunity to live in places like Nebraska, New York, Boston, Colorado, Ohio and Alaska while playing the game I love.
“I couldn’t be happier to bring that adventure over to England for the upcoming season with the Blaze.
“I have heard nothing but positive things from players like Liam Stewart and Drew Fisher. Everyone speaks highly of the EIHL, Blaze and Coventry.
“It feels like the opportunity of a lifetime and I can’t wait to land in England and get the season started.”