Gaithersburg, Montgomery County, MD — review of a crawl-space moisture-control materials list. The document identifies specified materials, not a verified homeowner complaint, completed installation, or measured outcome.
At a glance: The list includes mold-treatment products, materials for sealing penetrations, a ground vapor barrier and seam tape, insulation supports, a dehumidifier with condensate pump and PVC line, and humidity monitoring equipment. Those items describe a proposed approach; they do not by themselves prove what conditions were found on site or which components were installed.
What does the Gaithersburg materials list tell us?
It separates two tasks that are often confused. Treatment materials address affected surfaces. A ground liner, air-sealing materials and dehumidification address potential moisture pathways that could allow a problem to recur. Insulation hangers are listed to support fiberglass batts where needed. The list does not include a site survey or photographs identifying the exact affected areas.
Does a vapor barrier replace mold treatment?
No. A ground barrier can reduce moisture vapor rising from exposed soil, but it does not remove existing growth from framing or correct bulk-water leaks. Conversely, cleaning an affected surface without finding the moisture source may not prevent new growth. The right sequence and extent of work depend on inspection findings, material condition and the source of moisture.
What is the dehumidifier and condensate pump for?
The listed dehumidifier is intended to manage air humidity. Its condensate pump and PVC line provide a route for collected water to leave the equipment. That is different from a sump pump and perimeter drain used to manage groundwater. The materials list does not verify the final discharge location or whether the equipment was commissioned.
Would a humidity gauge prove the crawl space is fixed?
A gauge can help track humidity over time, but one reading cannot establish that mold was removed, leaks stopped, or framing stayed dry. A reliable outcome would require completed-work records and follow-up observations. Those records were not available for this review, so we are not presenting a mold-clearance or long-term dry-crawl-space claim.
For homeowners comparing proposals, ask which observations support each line item and how the crew will document the finished work. See our crawl-space repair guide for the differences between a ground liner, encapsulation, drainage and dehumidification.