Unfortunately, vent covers can’t protect against every source of humidity, as they only block one entry point. Water vapor can infiltrate your crawl space in many different ways, so we recommend using vent covers alongside other crawl space solutions. These include a vapor barrier, dehumidifier, and drainage system. With all of these tools combined, your crawl space is protected from all forms of water – whether humid air, groundwater, or precipitation.
Do Vents Stop All Humidity?
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