Washington, D.C. experiences average outdoor relative humidity above 70 percent from June through September. When indoor air is this saturated, evaporation from wet building materials slows dramatically. You cannot dry a structure if the air cannot hold additional moisture. This is why water damage drying time during summer months requires aggressive dehumidification that artificially lowers indoor humidity below 40 percent. Without this step, structural drying duration can double or triple compared to winter conditions when outdoor air is naturally drier.
Contractors unfamiliar with D.C.'s climate often undersize dehumidification equipment or fail to account for air exchange with humid outdoor air. We seal affected areas and use commercial-grade refrigerant dehumidifiers rated for the district's specific dewpoint ranges. Our technicians hold IICRC Water Damage Restoration certification and understand psychrometry, which is the science of air-moisture relationships. This expertise ensures we control drying conditions rather than hope for favorable weather. Local knowledge prevents costly mistakes that extend your displacement and increase secondary damage risk.