I see that Bob has suggested landscape fabric which could be held down with a layer of crushed rock, another often used method is black plastic. There isn't much benefit in pouring concrete over it, eventually dirt and seed will propagate in or on it and cleaning that up is a big job.
You can also just spray the area with something like Roundup or Killex it is still legal most places. Several layers of news paper wetted down and then held down with some crushed rock will also work remembering that eventually some soil and seed will collect in the stone and the little beggars will return but should be easily removed or a new layer of barrier put down. Dale leavens. ----- Original Message ----- From: Kevin Doucet To: blindhandyman@yahoogroups.com Sent: Tuesday, August 24, 2010 10:46 PM Subject: [BlindHandyMan] working with quick crete questions Hi, Don't know if I have the name right but I know some sort of bag concrete is available for making a concrete surface. Asking for a friend who has a raised back porch and has to constantly fight weeds in the spring and summer. He and I were wondering if he pored some concrete if that would do away with his constant fight with weeds under his porch. So, what am I looking for, will it be a fix in this situation and how is it applied? Thanks for your help. [Non-text portions of this message have been removed]