Are There Weight Differences Between Vapor Barrier Liners?

Material Types and Weights

Vapor barrier liners come in various materials, each with its own weight range. For example, a 1-mil thick polyethylene (PE) liner weighs approximately 1.5 ounces per square yard, while a 2-mil PE liner weighs around 2.5 ounces per square yard. Thicker materials like 4-mil or 6-mil PE liners can weigh up to 5 ounces or more per square yard. Additionally, liners made from other materials, such as polypropylene or silicone, may have different weight profiles.

Thickness and Weights

The weight of a vapor barrier liner is also influenced by its thickness, which is typically measured in mils (1 mil = 0.001 inches). A general guideline is that for every additional mil of thickness, the weight of the liner increases by about 0.2-0.5 ounces per square yard. For instance, a 4-mil liner might weigh around 3-4 ounces per square yard, while a 6-mil liner could weigh up to 6-7 ounces per square yard. This variation in weight is critical to consider when selecting a liner for a specific application.