The video discusses the importance of proper mortar application when setting tiles and the problems that can arise from incorrect methods. It emphasizes that using the correct trowel method is crucial for ensuring tiles are adequately supported and bonded to the substrate. The video highlights the potential issues, such as point load failures and impact damage, that can result from improper mortar coverage. It also covers the need for straight-line combing of mortar to maximize coverage, selecting the right trowel size, and periodically checking for proper coverage during tile installation. Overall, the video stresses the importance of adhering to ANSI and TCNA guidelines for successful tile installation.
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