CFS is resistant to inclement weather conditions. It does not retain moisture and is resistant to mold and mildew, unlike traditional lumber that retains water, moisture, mold and mildew. It is impermeable and will not warp or bow due to water retention like lumber.
Steel Framing Industry of America sites the durability of steel - "Cold-Formed Steel has a resistant coating that effectively protects steel from corrosion. With the proper coating and construction techniques, the protective barrier over cold-formed steel will last nearly 700 years, even under extreme conditions. Another critical characteristic for building materials in moisture mitigation is water retain age. Some materials absorb water in a flood situation and exacerbate the situation. Steel does not retain water."