The Owls defender says the work that the club's strikers and midfielders do to help the defence is a primary reason for their impressive campaign.
The Owls beat Nottingham Forest 3-0 on Saturday to record their first win in six league matches and get their play-off push back on track with a second consecutive clean sheet to end their faltering recent run of form.
Wednesday are sixth in the Championship table having conceded just 36 goals in 37 matches this season, and Loovens hailed the defensive contributions of the side's attackers and midfielders in helping the team to be so tight at the back.
The former Celtic man told the club's official website: "For me you don’t only do clean sheets with defenders, if your strikers are helping you and your midfielders are helping you, it makes it so much easier.
"That’s the case here, they work really hard for us, make life difficult for the opposition and everyone can see that. That hard work is a big part of those recent clean sheets.
"It’s vital that we keep picking up points. We’re at a stage in the season where we have to look up and Saturday’s game is a big one in our season."
After this weekend's victory, Wednesday are occupying the final play-off spot in the Championship table, sitting in sixth place with just nine matches remaining.
If they can secure a place in the post-season matches, or even finish anywhere in side in the top eight in the division this season, it will be the Owls' most successful league campaign since their relegation from the Premier League in 2000.
Carlos Carvalhal's side return to Hillsborough next weekend to face Charlton Athletic, having lost just twice in their 22 matches in front of their own fans this season in all competitions.