Materials like red brick and aerated concrete blocks, which are common in Europe, offer better resistance to the various issues you mentioned. Ceramic blocks, as you described, are gaining popularity for their practicality and efficiency. As for their availability in the U.S., it can vary by region. Some builders do use alternative materials, but wood remains a standard due to tradition and ease of use. If you're interested in building tips, I found some handy info about stable manufacturers, which often share insights that apply to various types of buildings. Check out https://www.scottsofthrapston.co.uk/equestrian-buildings-accessories/ for some useful tips.