Professional contractors and experienced DIYers widely agree that the hardest part of building a deck is ensuring the structural framing is perfectly square, level, and securely anchored. Excavating deep post holes below the local frost line, mixing and pouring concrete footings precisely, setting and leveling the ledger board against the house rim joist, and ensuring proper flashing installation to prevent water infiltration require extreme precision, meticulous measuring, and rigorous structural safety compliance.
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