Why You Need a Vapor Barrier in Your Crawlspace

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Excess moisture in your crawlspace can silently damage your home from the ground up. Over time, damp conditions lead to mold growth, wood rot, pest infestations, and even structural problems—all without you knowing it’s happening.

A vapor barrier is a thick, durable plastic sheet installed on the floor and walls of your crawlspace. Its purpose is simple but powerful: to block moisture from the soil before it ever enters your home. By creating a sealed layer of protection, a vapor barrier keeps humidity out, helps control air quality, and preserves the integrity of your foundation and subfloor.

• Stops ground moisture from entering your crawlspace

• Prevents mold, mildew, and musty odors

• Reduces the risk of wood rot and structural decay

• Improves indoor air quality throughout your home

• Increases energy efficiency by stabilizing temperature and humidity

Whether you’re already noticing moisture problems—or just want to protect your home long-term—installing a vapor barrier is one of the smartest investments you can make.