The retailer began a review of its account in November last year as it looks to increase its online business and the untapped home-improvement space in social media.
Last year, the brand shifted its focus from in-store activity to promote its catalogues and online services.
The appointment strengthens Engine's relationship with Wickes. The retailer appointed Partners Andrews Aldridge to its direct marketing business in February last year.
Wickes currently works with the design agency Libertine and MWO, the advertising incumbent, which created the strapline: "Wickes. It's got our name on it."
In a recent campaign voiced by the actor Timothy Spall, Wickes positioned itself as a one-stop shop for doors.
Wickes appointed Carat to its media planning and buying account at the end of 2011.