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Encapsulations eliminate fresh air exchange.This system when installed properly does control crawl space moisture problems, however, there are many disadvantages. A commercial dehumidifier must be installed to remove moisture build up from the air for this protocol to work properly or potential damage to the structure could occur. There is no need to be overcharged for products and services that you don’t need.Ī crawlspace encapsulation in a nutshell is a protocol where the contractor will close off all of the crawlspace vents, solve drainage problems, clean biofilm contaminants from the floor system, and install a fancy pool liner over the crawlspace soils including wrapping crawl space piers and often sealing the liner to the foundation wall of the crawlspace. The consultant should have the ability to inspect the structure and advise a solution without manufacturer or dealer manipulation. The most important decision that you could make is to hire an independent non-commission based professional in your area that is properly educated on crawlspace science and can explain the difference between the two systems properly. The market is flooded with overpriced plastic, mold remediations, insulation products, and dehumidifiers. Keep in mind that over the last 10 years there has been an explosion of manufacturer franchisee relationships that have popped up in the industry to push the encapsulation angle. Since I am an expert in both solutions, I will try to emphasize some key points on both systems that you should consider before making a decision. Some good, some bad, some extraordinarily bad. Unfortunately, there is an abundance of information on the Internet about this topic. I have been getting a lot of phone calls recently on the difference between crawlspace encapsulation and crawl space ventilation. Encapsulation and Sealed Crawl Space Controversy