Asked on May 17, 2012
My screened back porch is 12X20. It has two supports one end and 3 on the other end. Across front there is a little
deck with steps off both ends so I would say about 4 supports - all supports are in concrete. There is also one support in the very middle of the floor. I worry that the porch is not on a firm foundation. If ever I wanted to glass it in would it have adequate support? There is gravel underneath the floor and the floor stands about 2 1/2 to 3 feet off the ground. Need I always worry?