Hello Rich and thank you for your question. Your sod will need to contact the soil so the root structure will grow and create a beautiful lawn. The Weed Block Fabric will not allow any opportunity for the sod to contact the ground; in this case, the cut sod will not be able to survive for any length of time. Best wishes on your project.
No, just cut a hole where you want the new plant to be and staple back the sides.
DON'T KNOW IF TOXIC BUT NOT DIGESTIBLE SHOULD TAKE HIM TO VET! POSSIBLE INTESTINE PROBLEMS, BLOCKAGE. THIS HAPPENED WHEN MY PUPPY CHEWED UP NYLON STOCKINGS.
No, it is not recommended to be left over winter.
Not to my knowledge. I have never seen it anywhere.
You can cover with whatever you wish. Stones, mulch, sand. Your choice.
I would expect that would be a good idea. In my case the area I used it in was grass covered but had been completely cleared to replace a sewer line so I didn't have to deal with that situation. I did rework a small area and I did remove the old mulch. This area seems to be doing better than the large area that had been cleared completely.