Cannonball Pools is a partnership between Timothy VanderLoop of VanderLoop Construction, LLC and Mark Hartzheim of Hartwood Homes, LLC. Timm has been in the concrete business since 1999, specializing in flatwork and masonry. Mark is a general contractor and has been providing his clients with quality homes built to their specifications since 1994.

In recent years, VanderLoop Construction was contracted by a variety of pool contractors in the area to install various concrete surfaces around pools. In his interactions with homeowners, a common complaint was heard. Clients were unable to find a pool contractor who was able to complete all aspects of the project "in-house," and to do it in a timely manner. Encouraged by clients, Timm and Mark set out to provide homeowners in the Fox Valley this complete pool experience.

In 2013, Timm and Mark acquired a dealership with Trilogy Pools. They have trained under Trilogy experts and are certified installers. Cannonball Pools completes all aspects of the job: permits, excavation, plumbing, concrete and any other needs that arise to perform a quality job in a timely manner. They look forward to working with future clients to exceed expectations and make backyard pool dreams a reality.