10 - DECKS (PART 3) AND GARAGE DOORS

Our final episode covers deck stairs, handrails, guards, plus a complete examination of garage vehicle doors and operators.

Deck stairs and landings:
- Stringer attachment (hangers preferred; nails common but may withdraw)
- Cut stringers from 2x12 lumber (2x10 acceptable if reinforced)
- Maximum 6' span between stringer supports
- Drop header concerns (bolt attachment acceptable; screws/nails not recommended)
- Riser height (7¾" maximum) and tread depth (10" minimum)
- Maximum ⅜" variation between risers or between treads
- Open riser spacing (4" sphere test)
- Landing requirements (36" minimum width, 36" minimum depth, solid surface)

Deck handrails (4+ risers):
- Height: 34-38" above sloped line connecting treads
- Returns or posts at beginning/end
- Approved graspable sizes/shapes (common 2x4 NOT acceptable)
- Baluster spacing (4" sphere test)
- Attachment (two ring-shank nails or screws per baluster)

Deck guards:
- Required when walking surface >30" above surface below
- Minimum 36" height (42" in some jurisdictions)
- Posts minimum 4x4 unnotched, maximum 6' on center
- Post attachment to joists (not just rim joists)
- Must resist 200 psf concentrated load
- Baluster spacing (4" sphere test—different from stairs!)
- Special considerations for cable/horizontal fills (climbing hazard)

Garage vehicle doors:
- Types (sectional, single panel, roller) and materials (wood, steel, aluminum)
- Weight considerations (100-400+ pounds)
- Spring types (torsion vs. extension with containment cables)
- Installation requirements (attach to solid framing, not drywall)
- Spring adjustment (door should stay open at ~4' height)

Garage door operators (openers):
- Motor sizes (⅓, ½, ¾ HP) and drive types (chain, belt, screw, jackshaft)
- Installation (cross-bracing, proper attachment)
- Safety features: reverse sensors (≤6" above floor), wall switch (≥60" high), manual release (≥72" high)
- Testing controversy (pressure reverse using 2x4 vs. hand-stopping)
- Safety label near wall switch

This comprehensive finale emphasizes that deck defects cause more injuries/deaths than any other home system, making thorough inspection absolutely critical.

Intro

This episode is brought to you by GetSync.pro

This episode is hosted by Charlie Bellefontaine of Chicagoland Home Inspectors

For complete training with visual materials, practice exams, and certification support, visit nhiexamprep.com

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