From sheathing treatment to exhaust fan rerouting and ventilation correction — the full scope of attic mold remediation in Marriottsville, MD.
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Attic Mold Assessment & Ventilation Survey
Assessment covers sheathing moisture content readings, growth extent mapping, identification of all exhaust fans terminating inside the attic, vent count versus square footage comparison, and ridge vent assessment. Written findings before scope proposal.
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Roof Deck Sheathing Mold Treatment
Loose surface mold removed by HEPA vacuuming and wire brush. EPA fungicide applied followed by penetrating borate solution. Sections with advanced degradation are flagged for sheathing replacement.
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Bathroom & Kitchen Exhaust Fan Rerouting
Improperly terminated fans rerouted to exterior via insulated flex duct to gable, soffit, or roof termination cap. Sealed at both ends, properly insulated to prevent condensation in the duct.
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Soffit Vent Addition & Ridge Vent Assessment
Where soffit vent area is inadequate relative to attic square footage, additional vents are added to improve cross-flow to the ridge. Blocked soffit vents — a common issue in Marriottsville, MD attics with blown-in insulation covering the eave bays — are cleared and baffled to maintain airflow pathway.
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Attic Insulation Removal Where Contaminated
Blown-in or batt insulation that has absorbed mold spores or become wet must be removed and replaced — it can't be treated in place. Our Marriottsville, MD team removes contaminated insulation under HEPA containment as part of the attic remediation scope when warranted by the assessment findings.
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Post-Remediation Clearance & Moisture Verification
Post-treatment sheathing moisture content re-check plus independent post-remediation air sampling from within the attic and from living spaces below confirms that treatment and ventilation correction achieved the intended outcome. Written clearance report suitable for insurance and real estate use in Marriottsville, MD.
