Bleach and baking soda to clean cement. I tried a test spot today and it was instant!To make the bleach scrub, use two parts baking soda, to one part bleach. I used 4 Tbsp baking soda, and 2 Tbsp bleach. I also used one of those scrubby brushes to scrub the concrete.:must do on front porch!
How To Install A Reclaimed Wood Ceiling Treatment: Attach joists to the ceiling with 15 ga. finish nails. If the ceiling treatment is not thick enough to serve as an anchor then select a fastener long enough to penetrate into the plywood layer installed earlier. From DIYnetwork.com