Putting A Concrete Floor In Crawl Space

Concrete will keep out moisture and bugs.

Putting a concrete floor in crawl space.

Most types of tile can be used above crawl spaces unless there are significant moisture problems in the crawl space. Concrete is heavy and mixing enough by yourself to cover your entire crawl space floor and walls is out of the question. In this design a concrete pad called a mud pad is poured on the crawl space floor. With and with out a vapor barrier.

The alternative to pumping concrete is a liner sealing system of the crawl space. The advantages of this solution are many. Tile floors usually require an special underlayment on top of the. Installing a hardwood floor directly over a crawlspace exposes the wood to moisture from the ground and from the air in the crawlspace.

The major exception is any crawl space access door in the floor. And that leads to more mold. Problems with putting wood flooring over a crawlspace. This is essentially a concrete barrier meant to help control moisture in the crawl space.

That is 1 1 2 truckloads from a concrete truck. Concrete crawl space floors will be difficult to install after framing has begun. Also since concrete does not provide a thermal break a temperature difference between the air and the concrete surface will cause condensation. This is done several ways.

To pour a floor 3 thick over a 1500 square foot crawl space floor alone is 14 4 cubic yards of concrete. Ceramic and stone tile will be too heavy and too difficult to install on the access door. The traditional mud pad is a poured concrete pad over a roughly graded dirt floor. The concrete should be poured after the footer installation and the foundation walls are in place.