Mold needs two things to grow, organic material and moisture. By taking those things away, the mold will have no way to grow. Your indoor relative humidity levels should be between 30-50% to prevent mold growth. This is where our crawlspace encapsulation system comes in handy. With our product, Cleanspace, being made with a treated, non organic material it takes away the organic material factor that the mold needs to feed of off to live. To keep humidity levels down, we have our Sanidry dehumidifiers that will take moisture out of the air while filtering it, causing clean dry air to be pushed back into the crawlspace and eliminating the moisture factor that the mold needs to grow. For a further explanation call and set up an appointment for one of our inspectors to come out and they can give you a detailed presentation on how we accomplish this!