Expro,
I agree with you on the black pad, but in my defense, the floor looks in poor condition, so I would be surprised if any reaction took place, and I should have put TEST FIRST!
So many thanks for the words of caution

Regarding the polish, this is not the first time I have heard this, many moons ago, there was a bit of a debate on this very matter, when I phoned ALTRO I asked them to put that in writing, they refused! Although, verbally was a different matter

Personally, I would never put polish on any safety flooring, in todays climate, some one trips, slips, I know who would be liable, no matter what.
Barbara, you have mail, and many thanks for taking the trouble to say thanks

Regards,
Rob