Published by Bryan A. Woods – San Antonio Construction Defects Lawyer

Roof Defects in New Residential Construction

A new home should provide shelter and security, and the roof is the primary defense against the harsh Texas weather. When you purchase a newly built house, you expect the roof to remain leak-free for decades. Unfortunately, roof defects are among the most common complaints in new residential construction. When a builder hires inexperienced subcontractors or rushes the installation to meet a deadline, the resulting roof failures can cause extensive interior damage. At Bryan A. Woods Attorney at Law, I help homeowners hold negligent builders accountable for defective roofing systems and the costly water damage they cause.

Roof defects are rarely the result of bad shingles; they are almost always the result of bad workmanship. The roofing system relies on a precise sequence of underlayment, flashing, and overlapping materials to shed water effectively. When a single step in that sequence is skipped or performed incorrectly, the entire system is compromised. The water that leaks through a defective roof does not just stain your ceiling; it saturates your insulation, ruins your drywall, and creates an environment where toxic mold can thrive.

The Critical Role of Flashing

The vast majority of roof leaks in new construction occur at the flashing points. Flashing is the metal material installed at intersections and penetrations on the roof — such as where the roof meets a vertical wall, in the valleys where two roof slopes join, and around chimneys, plumbing vents, and skylights. These areas are highly vulnerable to water intrusion, and installing the flashing correctly requires time, skill, and attention to detail.

When builders push subcontractors to work faster, flashing is often installed sloppily or omitted entirely. We frequently see cases where “step flashing” along sidewalls is nailed improperly, allowing water to run behind the exterior siding and down into the wall framing. We also see “kick-out flashing” omitted at the bottom of roof-to-wall intersections, which directs heavy runoff straight into the stucco or brick veneer. These defects guarantee that the home will suffer severe water intrusion; it is only a matter of time.

Inadequate Ventilation and Attic Moisture

A roof defect does not always manifest as a visible drip during a rainstorm. Improper attic ventilation is a serious construction defect that can destroy a roof from the inside out. A properly designed roof system must include adequate intake vents (usually at the soffits) and exhaust vents (at the ridge) to allow air to circulate through the attic. This circulation prevents heat and moisture from building up in the attic space.

When a builder fails to install sufficient ventilation, the attic becomes a trap for humidity. In the winter, warm, moist air from the living space rises into the cold attic and condenses on the underside of the roof decking. This constant condensation causes the wood decking to rot and promotes widespread mold growth across the attic framing. In the summer, inadequate ventilation causes attic temperatures to soar, baking the asphalt shingles from beneath and drastically reducing the lifespan of the roof. Builders who fail to calculate and install the correct ventilation ratios must be held liable for the resulting damage.

Wind Damage and Improper Fastening

Texas experiences severe weather — high winds, hail, and heavy rain. While no roof is entirely immune to a major storm, a properly installed roof should easily withstand typical seasonal weather. When a relatively minor storm causes shingles to blow off a new home, it is usually a sign of improper fastening.

Shingle manufacturers provide strict instructions on how their products must be installed — specifying the exact number of nails per shingle and the precise placement of those nails. When roofers work too quickly, they often drive nails too high on the shingle (missing the reinforced nailing strip) or overdrive the nails through the matting. These installation errors void the manufacturer’s warranty and leave the roof highly susceptible to wind uplift. If your new roof is shedding shingles in moderate winds, the builder’s negligence is likely to blame.

Forcing the Builder to Make It Right

When homeowners report a roof leak, builders typically send a worker out with a tube of roofing cement to patch the immediate area. This “band-aid” approach rarely solves the underlying defect. If the flashing was installed incorrectly across the entire roof, patching one spot only means the water will find a new entry point during the next storm. You need a permanent fix, which often requires removing the surrounding roofing materials and rebuilding the intersection correctly.

I do not let builders get away with superficial repairs. When I take a roof defect case, I work with independent roofing consultants who thoroughly inspect the entire system to identify every installation error. We document the code violations, the deviations from manufacturer specifications, and the full extent of the interior water damage. If your new home has a defective roof, do not settle for endless patches and empty promises. Contact my office today to discuss how we can force the builder to provide the quality roof you paid for.