All seams should be overlapped by at least a foot, and sealed shut with special tape. When installed, the encapsulation system should be completely air tight. The crawl space floor should be cleaned (no rocks or other debris to rip the plastic) and graded.Related articles: Vapor Barriers, Basement Waterproofing, Repairing and Sealing a Basement sells 20-mil and 23-mil multi-layer poly liners, offering installation in North Carolina, South Carolina and Georgia, and do-it-yourself materials nationwide.
Clean space vapor barrier cost install#
One Southern homeowner with a 1,500-square-foot crawl space was quoted $5,000 for one contractor to install CleanSpace and $3,000 for another contractor using DrySpace another Southern homeowner was quoted $9,500-$12,000 to install CleanSpace in a 1,400-square-foot crawl space, and instead paid $1,700 for do-it-yourself DrySpace materials. Crawlspace Concepts offers the DrySpace Vapor Barrier in 8-mil, 12-mil and 20-mil thicknesses that can be professionally installed or sold directly to consumers for do-it-yourself installation (600 square feet for $330).CleanSpace is only available fully installed by authorized contractors, with costs ranging from $4,000-$14,000 or more. This is a multi-layer 20-mil vapor barrier, with a mold retardant/fungi inhibitor on the underside. The most common crawlspace encapsulation system is the CleanSpace Crawlspace Liner by Basement Systems.(See How Much Does a Dehumidifier Cost and How Much Does a Sump Pump Cost.) More expensive systems use specially designed multi-layer 20-mil or 23-mil vapor barriers, and may also include a dehumidifier, a sump pump or drainage trenches. Less expensive systems use a plastic liner of 6-mil (.006"), 8-mil, 10-mil or 12-mil thickness. Costs for complete installation of an encapsulation system start around $2,000-$4,000, average $5,000-$7,000 and can go as high as $8,000-$14,000 or more, depending on the size and condition of the crawlspace, local rates, and the materials used.These encapsulation systems can also be used in a basement with a dirt floor, one with uneven walls and floors, or one with a large rock or other unmovable object. Any vents are sealed if needed the crawl space door is replaced and in some situations a dehumidifier and/or a sump pump is installed. Also called crawl space conditioning, crawl space encapsulation uses a basic vapor barrier (a thick plastic liner) to completely seal the space by covering the floor and all the walls (not just laying the plastic sheeting flat on the floor/ground). How Much Does Crawl Space Encapsulation Cost?īecause dirt and concrete allow moisture to pass through, a crawl space beneath a house can easily become damp and moldy. 2021 Cost of Crawl Space Encapsulation - Estimates and Prices PaidĬostHelper > Home and Garden > Plumbing & Waterproofing > Crawl Space Encapsulation