![]() The average cost of installing a sump ranges from $650 to $1,800, with most homeowners paying about $1,300. If it’s necessary to collect the water and pump it away, a sump pump may need to be installed. Still, if water is pooling around the bottom of the foundation, it could eventually cause the foundation walls to shift. Drainage SystemĮncapsulation of the crawl space will keep humidity from the underside of the house. The typical crawl space has one vent for every 150 square feet of interior crawl space. Covers for crawl space vents are relatively inexpensive, running about $15 to $22 apiece. Other gaps and air leaks into the crawl space must be sealed as well. Vent SealingĪll existing crawl space vents must be sealed to ensure dryness in an encapsulated crawl space. Thickness is measured in millimeters, and the thicker the vapor barrier, the more it will cost. The cost of a crawl space moisture barrier ranges from about $0.50 to $0.70 per square foot, depending on the quality and thickness of the barrier. The vapor barrier is the most crucial element in crawl space encapsulation projects because it blocks humidity and moisture from coming into contact with the underside of the home. A foundation contractor can recommend the best type of insulation for your home and budget. In contrast, spray foam insulation can run from $0.50 to $1.50 per board foot. Installing batt insulation runs an average of about $300 to insulate a large crawl space and is the most cost-effective material. ![]() In some areas, insulating the crawl space makes sense to help maintain a uniform temperature and reduce the risk of sweating in the crawl space. If the foundation is in decent shape, it could cost as little as $600, but if waterproofing requires installing gutters or drain tile, the cost could exceed $10,000. Waterproofing runs the gamut in price because no two foundations are identical. If the crawl space foundation is currently leaking or has multiple cracks, the contractor may recommend waterproofing it, adding about $4,600 to the project. If homeowners are unsure whether crawl space encapsulation is necessary, they can have a contractor come out and inspect the space. The cost for this type of inspection is typically included in the cost of pulling the permit. When a permit is required to do the project, an inspector will probably schedule a time to come out and look at how well the contractor has performed the work. When a contractor takes out a permit, the information is recorded on the homeowner’s property details so the county can maintain a record of improvements. The cost of a permit varies from community to community but, in general, will run from $100 to $250. Many communities require pulling a permit for crawl space encapsulation projects because if they’re done incorrectly, they could negatively impact the home’s structure. ![]() Repairs can cost anywhere between $1,500 and $15,000, depending on the extent of the fix required. #Crawl space vapor barrier free#Crawl Space Size and Conditionīefore a crawl space can be sealed, it must be free from debris, and it should be in good structural condition. That vast price difference is due to the going cost of labor in a community and the quality of the materials used-for example, installing a single thin layer of plastic liner will run less than installing multiple layers or adding a draining system. The total cost of materials and labor to complete a crawl space encapsulation ranges from $1,500 to $15,000. ![]()
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