Durable Surfaces has certified concrete slab moisture-testing specialists that can come to your site in Philadelphia, Pennsylvania, or anywhere else in the US and test your slab for moisture issues. Durable Surfaces is certified. Durable Surfaces can help you discern the moisture causes and help with the remediation of a moisture-laden concrete slab. Durable Surfaces can make recommendations for testing and also remediation. Spot checking can be performed rather than a certified test to determine whether certification is needed or warranted.