Season 6, Episode 4
Lisa and John decided to have an existing retaining wall in their backyard rebuilt with concrete blocks. As the wall was going up, they began to question the lack of gravel base and reinforcement material. Then, before the job was complete, the contractor just stopped showing up, and they soon realized they'd been taken for a ride. Host Mike Holmes and his team of landscape professionals tear down what had been started and build a retaining wall that's rock solid.
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