Will black plastic "stain" concrete?

Question

I built a suspended concrete form and I need to know if I cover the form with heavy BLACK plastic, will the wet concrete get "stained" by it? I was going to use clear plastic but I don't have any-I have lots of the black plastic. Any concrete gurus please advise. Thanx!

Answer 1

No, it will not stain.  

The _black_ plastic will absorb more heat, and this may cause water to evaporate more quickly, so keep it wet.  Again, this should not be a problem, just make sure you follow the curing procedures.

Answer 2

It will not stain . but you might have a problem wit plastic moving etc .I have seen it done once before and it looked really bad after it was stripped.

Answer 3

No stain -you're good

Answer 4

The plastic can leave a shadow effect on the concrete surface. Instead of a smooth color it will create shadows from the different water evaporation rates.  But that is just the concrete, black plastic won't leave any residue behind.

Answer 5

why are you going to cover it?