Franklin, Tennessee guide
Should you repair or replace a crawl space vapor barrier?
Repair a vapor barrier when the liner is 12 mil or thicker, under eight years old, and damage is limited to isolated tears. Replace it when the liner is thin 6 mil sheeting, is lifted or floating, shows mold on the underside, or covers less than the full crawl space floor and walls.
Builder-grade 6 mil plastic laid loose over dirt is the most common failure our Franklin network sees; it tears under foot traffic and never seals to piers or walls.
If standing water is present, drainage comes first. A new liner over an unmanaged water source simply hides the problem until floors start to sag.
Franklin Crawl Space Pros is a local matching service for crawl space encapsulation and foundation waterproofing in Franklin, Tennessee. Call (615) 442-3490 or request a free quote to compare written pricing from vetted contractors near you.