

To ensure your sliding door performs efficiently, start by checking smooth operation—open and close the door several times to confirm it glides without sticking or jerking. Next, test the lock engagement to verify it secures fully with proper alignment. Conduct air and water infiltration tests if the door faces external conditions—look for drafts, leaks, or light passing through seals. Finally, examine the frame alignment by inspecting the level and plumb of the door and track system. Any misalignment can affect sealing, security, and smooth function.
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