Building A Deck
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Connections
Proper connection of all deck components is vital to the long-term performance and safety of a deck. Use recommended corrosion resistant fasteners and connectors. Much of the Prescriptive Residential Wood Deck Construction Guide is devoted to proper connection details and includes guidance for the following:
- Footing-to-post connections
- Post-to-beam connections
- Joist-to-beam connections
- Decking-to-joist connections
- Rim joist connections
- Bracing attachments
- Ledger board attachments
- Free standing deck attachment to house
- Guard details and attachments
- Guard post attachments
- Stair details and attachments
Ledger Attachment
Proper detailing of the ledger is critical. The ledger board should be flashed to prevent moisture intrusion and decay. In normal backyard service, copper flashing is recommended, fastened with copper flashing nails (use like metals to avoid galvanic corrosion). In coastal applications, stainless steel flashing and fasteners are recommended. Aluminum flashing is not compatible with the copper in treated wood. Plastic is also not recommended since flashing may become brittle and crack due to UV exposure. An alternative is to construct a freestanding deck supported on all sides by posts to support vertical loads.
Fasteners & Connectors
Use recommended corrosion-resistant fasteners and connectors for strength, long-term durability and appearance. Hot-dip galvanized is the minimum. Avoid carbon steel, aluminum, or electroplated galvanized products. See complete Fastener Corrosion Guidelines here.
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