Roof Rat Structural Exclusion & Attic Decontamination

Roof rats (Rattus rattus) exploit elevated transit routes throughout Bexar County, traveling along mature live oak canopies and overhead utility lines directly onto residential rooflines. In neighborhoods with dense tree canopies such as Monte Vista, Alamo Heights, and King William, older wooden soffits and fascia boards frequently yield to gnawing teeth. Newer construction in Stone Oak, Timberwood Park, and The Dominion presents distinct vulnerabilities where clay barrel tile gaps, architectural roof junctions, and unmeshed ridge vents provide direct access into unconditioned attic spaces. Once inside, rodents compress blown fiberglass or cellulose insulation, reducing thermal efficiency while depositing droppings and pheromone trails that attract future colonies.

Trap placement alone cannot solve a persistent roof rat infestation because exterior populations continually repopulate open attics. Structural exclusion provides permanent defense by sealing openings larger than one-quarter inch using heavy-gauge galvanized steel mesh, exterior-grade sealants, and custom metal flashing around HVAC chases, weep screeds, and roof returns. In Westover Hills, the Medical Center corridor, and Great Northwest, securing attic spaces protects electrical wiring from fire risks caused by gnawed wire jackets and prevents airborne rodent allergens from circulating through ducted HVAC returns into indoor living areas.

Attic decontamination directly follows mechanical sealing. Technicians apply targeted hospital-grade, EPA-registered biocides and virucides via specialized atomizing mist to break down biological scent markers, neutralize urine salts, and eliminate lingering parasites. This sanitization protocol eliminates contamination risks to household pets and human occupants without requiring ongoing, open-ended chemical contract commitments. Exact remediation pricing depends on attic square footage, contamination severity, and the physical height of roofline access points, all verified during a comprehensive on-site assessment.