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About this episode
Artificial rock waterfalls, grottoes, and pool slides can look incredible—but what’s happening underneath the surface can determine whether they last for decades or become a serious safety hazard.
In this episode of the Pool Magazine Podcast, we sit down with Jason Lewis of Rockworks Inc., an Arizona contractor with more than 30 years of experience building and repairing custom rock features. Jason recently went viral after documenting the demolition of a failing artificial rock structure where a homeowner’s son actually fell through the top.
What they discovered inside was alarming: reinforcing steel had deteriorated so severely that sections of rebar could be crumbled by hand after just six years.
Jason explains why these failures happen, how moisture and improperly encased rebar can compromise thousands of pounds of concrete, and the warning signs homeowners should never ignore. We also discuss when a feature can realistically be repaired versus when demolition is the only responsible option, why cosmetic patches can create serious liability, and what proper construction should look like behind the finished rockwork.
Finally, we look at the other side of the equation—a large-scale grotto and artificial rock project built correctly from the beginning—and how proper engineering, steel placement, concrete installation, and collaboration between contractors can make all the difference.
If you own a pool with an artificial rock waterfall, grotto, or slide—or you’re considering adding one—this is an episode worth hearing.
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