Balconies & Decks

The proper construction of balconies and decks relies upon good coordination and oversight of multiple subcontractor trades by the builder or general contractor, and is often done incorrectly by homebuilders and other general contractors. Inadequate deck and balcony construction can lead to water intrusion into homes and units, and premature rot and other damage to the structural framing members. Common balcony and deck defects include:

• Improper installation of waterproof membrane, such as failure to seal seams or lap edges upward
• Improper integration of waterproof membrane with stucco, siding, masonry, or other exterior cladding materials
• Improper integration of waterproof membrane with sliding and French door thresholds
• Improper waterproofing of concrete patios and porches at adjacent framing and sheathing
• Failure to correctly install (or to install at all) edge metal
• Failure to provide adequate slope on lightweight concrete topping
• Improperly installed or missing deck or balcony drain systems
• Improperly sized or installed framing members
• Failure to install required structural members, including steel reinforcing, caissons, piers, haunches, or corbels