09 - DECKS (PART 2)

Send us Fan MailPart 2 continues our comprehensive deck coverage, focusing on support structures and framing—components that must work together to create a safe, durable deck.Posts, footings, and beams:- Recommended post materials (preservative-treated or naturally durable wood, Schedule 40 steel)- Maximum post heights (14' for most wood, 8' for 4x4s)- Beam construction (typically 2-3 members with joints over supports)- Post-to-footing connections (post bases preferred over embedding in concrete)- Footing sizing based on joist length and post spacing- Frost line requirements (mandatory for attached decks)- Beam support on top of posts (side attachment not acceptable by current standards)Deck framing essentials:- Floor joist span considerations (more restrictive than interior joists due to moisture)- Joist attachment using appropriately-sized galvanized or stainless steel hangers- Cantilever extension limits (span/4 or per joist span tables)- Decking materials (2x6, 5/4x6, 5/4x4 wood; various composites, metal, plastics)- Proper spacing (⅛" between boards for expansion and drainage)- Attachment methods (screws preferred; ring shank nails acceptable)- Special considerations for diagonal decking patternsBracing requirements:- Parallel to beam: required for decks over 2' above ground- Perpendicular to beam: required for free-standing decks- Purpose: resist wind, seismic loads, and movement from useTypical defects include improper joist attachment, inadequate fasteners in joist hangers, excessive spans, over-driven fasteners in decking, absent or improper bracing, deteriorated components, and rusted metal fasteners. Remember: cuts in pressure-treated lumber should be field-treated (though rarely done).Intro This episode is brought to you by GetSync.pro This episode is hosted by Charlie Bellefontaine of Chicagoland Home InspectorsFor complete training with visual materials, practice exams, and certification support, visit nhiexamprep.com© 2025 National Home Inspector Exam Prep Podcast. All rights reserved.