The concrete floor In this design a concrete pad called a “mud pad” is poured on the crawl space floor. This is essentially a concrete barrier meant to help control moisture in the crawl space. This is done several ways; with and with out a vapor barrier. The traditional mud pad is a poured concrete pad over a roughly graded dirt floor. There is little prep work done to flatten the area so...

A crawl space with a concrete floor either with or without foundation vents This type of crawl space is not as common but has its advantages. For one, this type of construction is more energy efficient than an open crawl space if constructed without foundation vents.