Our Screen Enclosure wall was designed to be load bearing. This allows various roof options. The Wall was also designed to be used with an expansion system. This allows it to easily fill areas which need no support. The screens are removable; which saves you from having to pay someone to come out to your home to fix a torn screen. We prefer to use aluminum screen. As any parent or pet owner will tell you, aluminum screen cuts down on screen replacement. Inserts are also available to close off enclosure during the winter months. Construction is all aluminum and therefore, maintenance free.