What are the primary considerations when selecting epoxy garage flooring based on factors such as climate conditions, moisture resistance, and temperature fluctuations, to ensure optimal performance and longevity in varying environmental conditions? How does the application of epoxy coatings in residential garages enhance the space's resistance against common issues like cracking, pitting, or deterioration caused by freeze-thaw cycles or humidity? Can epoxy garage flooring las vegas be installed over existing concrete surfaces, and what preparation steps are necessary to ensure proper adhesion and a seamless finish? How does the installation of epoxy garage flooring contribute to reducing dust, allergens, and odors in the garage, potentially creating a healthier and more pleasant environment for homeowners? What maintenance practices should homeowners follow to maximize the lifespan and appearance of their epoxy garage flooring, and what products or cleaning methods are recommended for routine upkeep?