Vinyl can withstand colder temperatures. If you live in an area with a cold climate, vinyl flooring might be a good choice for your screened patio. There are a few precautions that you will need to take to make sure the vinyl is able to last and will not start breaking or cracking. These precautions can help add a bit more warmth to the screened in porch as well. The first option is a thermal underlay. This underlay is responsible for keeping the floor warm and can do a good job making sure that the vinyl is not going to expand or contract too much. It is also the best way to keep your feet warm during the winter. Before choosing a flooring material for your space you should consult a flooring expert or contractor to see what is best for the climate as well as your needs.