About Our Company

We are a third generation family-owned and operated business that dates back to 1965 when Robert “Bob” Cotten first patented the Beaver Basement Water Control System. Our original do-it-yourself baseboard channel system was the first time a homeowner had access to a contractor-grade basement waterproofing solution. Over the next few decades, we’ve designed and patented new basement waterproofing systems for both do-it-yourself homeowners and professional waterproofing contractors. Today, we offer a complete waterproofing solutions to remedy any wet basement or crawlspace.

Made In Minnesota

All of our basement waterproofing products are made right here in Minnesota. We proudly manufacture in America using eco-friendly, recycled PVC that stands the test of time. All of our products are sold factory-direct. This direct-to-consumer approach saves you money – guaranteed. We strive to process and ship all orders same day as placed.

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Evolution of the Original Baseboard System


Beaver System originated in 1965. It was the first do-it-yourself system of it’s kind! The Beaver System was revolutionary for its time and dried up thousands of wet basements, but was labor intensive, lacked pre-molded corners and used an effective, yet messy A-B expoxy system.


In 1980, the SquidGee Dry System was introduced as the successor to the Beaver System. We released our new, exclusive one-step SealOnce Adhesive – a game changer! SealOnce Adhesive cures in wet or dry conditions! We changed the profile of the main sections to have an open back to collect seepage for the full length of the system versus holes punched in the back and also introduced easy to install pre-molded inside and outside corners!


In April 2017, we introduced the NEW SealOnce Basement System using the latest in foundation waterproofing technology! The profile was refined to make installation even easier! The system is made in the USA using recycled materials to create the strongest PVC baseboard channel on the market today! We upgraded our powerful, high performance SealOnce Adhesive – it’s odorless, quick curing and cures in wet conditions!

Over the Past 50 Years

Over the past 5 decades, we’ve expanded beyond do-it-yourself basement waterproofing products to include professional basement waterproofing supplies, including our hybrid Fast Track System, Drain-Eze System, Drain Main System, Water X-Tract, VaporBright Crawlspace and pro-line of sump pump materials. We carry a full array of contractor-grade waterproofing systems from an above floor channel to a rugged stand alone footer system to our new hybrid subfloor drain tile system. Our professional line of “Member’s Only” products were designed to save you and your company money with high efficiency rapid flow systems. These labor saving designs will increase your bottom line and save you time on the job!

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