It's rated for moisture/slip.Sometimes I have carpet installed, especially when I need a fast turn around.  

No actual water coming in but plenty of moisture.

It needed all new paint, flooring, kitchen cabinets, deck, and, little did we know at the time, moisture remediation in the crawl space.

If so, DO NOT block those holes, that allows your crawl space to breath and allows moisture to escape.

New landlord here..Our first rental property is from the 1920s and has field stone for foundation, it gives you the smell that just smacks you in the face and moisture like crazy..

I think that moisture might be penetrating through the brick and mortar from the exterior or maybe the window.

The main beam is damaged either by moisture or possible termite damage that should be further evaluated with remedy as necessary by qualified contractor.3. 

I also like floating laminate floors because they're inexpensive and fast to put down and pull back up although they do not tolerate moisture as well and more difficult to repair.

In Oklahoma termites and structural damage is not a matter of if but when and sometimes my clients from out of state aren't aware of that.....also deteriorating ductwork if in the slab (70's-80's) is very common because of the moisture and it is expensive to coat the plenum/replace boots....even more so to run it over head.

Once painted, it’s basically wrapped in plastic which traps that moisture inside the wall making mold much more likely as well as causing damage to the brick over time, which could even compromise the structural integrity.