A Crawl Space Vapor Barrier is often referred to as a plastic material that resists diffusion of moisture from the dirt floor of the crawlspace. The most often accepted definition is a plastic material covering the ground only. The code or standard thickness in most areas is 6 mil. Many vapor barriers range in thickness from 4mil to 10 mil. A vapor barrier is most often installed by builders as a means to fulfill their code requirements and pass inspections. A vapor barrier is a starting point in reducing the moisture from the ground, but by no means is an ending point. Our Company offers a TRUE Encapsulation system. Nylon reinforced 12-24 mil thick liner with antimicrobial mold and mildew engineered into our liner system
Do not be fooled by cheap imitation encapsulation systems!
The problem with the crawlspace industry is that there are so many contractors using a 6 or 10 mil vapor barrier material and calling it an encapsulation system. They are not the same.The difference between a vapor barrier and encapsulation liner is the thickness, flexibility, multiple layers of plastic with cord reinforcement, and perm rating. A 6, 8, 0r 10 mil polyethylene sheeting is meant to be used as a floor covering and not a permanent crawlspace encapsulation system. It is not durable enough to stand the test of time. The plastic is easily pulled off the walls and is in need of constant repairs.