A vapor barrier is a moisture control solution designed to prevent moisture from the ground beneath your home from rising up and infiltrating your crawlspace. It typically consists of a durable plastic sheet, often 6 mil in thickness, that is spread across the crawlspace floor. The primary function of a vapor barrier is to block the passage of moisture vapor, thereby reducing humidity levels in the crawlspace. Here are the key characteristics:
Moisture Control: Vapor barriers focus on managing humidity and preventing ground moisture from entering the crawlspace environment.
Material: Typically, a vapor barrier employs a single layer of polyethylene or similar material.
Installation: Installing a vapor barrier involves laying the material on the crawlspace floor.
Purpose: The main purpose of a vapor barrier is to control humidity levels and minimize the risk of issues like mold, rot, and structural damage.