What type of insulation is best for hot climates?

In hot climates, the best insulation options are reflective or radiant barriers, spray foam, and rigid foam boards. These materials are designed to block heat transfer and keep indoor spaces cooler, reducing the load on air conditioning systems. Reflective insulation is especially effective in attics, where most heat enters. Just like choosing the right insulation for energy efficiency, picking the right long ethernet cable is essential for reliable internet performance. A long ethernet cable with proper shielding ensures stable connectivity over extended distances, much like good insulation ensures consistent indoor comfort in hot weather.