Cover over existing weathered decking?
I have a 10 x 30 deck with the flooring planks installed on a 45 degree angle. A 10 x 20 screened porch was built on top of this deck. The flooring inside the screened porch is in good condition.
The remaining 10 x 10 area is exposed to the weather. The flooring planks in this area are badly weathered and need replacing. Some of these weathered planks are long enough that they extend into the screened porch area.
Can I go over the existing weathered flooring with some new material? If this is not a good idea, how do I replace the weathered flooring, remembering that the walls of the screened porch were built on top of this flooring?