Wife wants small porch coming off the wash room. Wants it to fit in L shape of back of house. The depth would only be 38", width about 12'. Highest part will be about 36" from ground. This porch will be covered. Material on hand: 3/4x4x8 PT plywood 4"x4" PT posts 2x8's 2x4's Am thinking of using the plywood for the floor of the porch, since it will be covered. Want to build it seperate from house with posts about 16" in the ground with quick-krete. Questions: 1. will attaching cover to the house then to the porch cause problems due to settling (old house)? 2. better to run post all the way to the top/roof/cover from the ground or start at porch and go up? 3. spacing of posts supporting porch with 3/4 plywood as floor? tx for any comments or suggestions

Your input on this project would be very much appreciated. I want to screen in my patio, which is about 24' wide and 18' from the back of the house to the edge of the patio. The sides would consist of vertical 2x4's spaced 3 feet apart, with no cross pieces. The "roof" would also be screened, and consist just of rafters of 2x10's spaced 3' apart, with nothing supporting the span in the middle. My questions are: Does one need to use pressure-treated lumber for any other part of the structure besides what touches the ground, as long as everything is sealed and painted? Considering there is no real roof to tie the structure together, will this essentially topless box twist or suffer wind damage, and what should be done to make it stronger? What size roof rafter should I use to minimize if not eliminate bowing? I was thinking of 2x10. The second story of the house overhangs the patio by about 3'. Should I attach the roof beams to the front of the overhang, or to the brick beneath it (I saw a post earlier about not attaching to the brick if clay - how do I tell)? Thanks for the help! Larry