Screwfix polyurethane coving on emulsion-painted walls

[Avocet]

I've done a quick seach but all the coving threads I found see quite old. I'm thinking of using some of this stuff in one of our rooms:

http://www.screwfix.com/p/supercove-lightweight-coving-127mm-x-3m-6-pack/3518h?activeTab=rr

It seems to get very good reviews on the Screwfix page!

I see it comes supplied with adhesive but I'm putting it on walls and a ceiling that have already been painted (for a good 10 years) with emulsion. Also, I'm putting it on to hide a self-adhesive border that was peeling, but has left some of its adhesive on the wall. Hopefully, it will span the "sticky" patch as I think it's taller than the border was, but should I prepare the walls in any way? Are there any different adhesives (e.g. No More Nails) that would be better?

 

[footprints]

I would go with the recommended adhesive, some foam products can react with certain adhesives, as to prep I would sand lightly to key and wipe down with a damp cloth let it dry and off you go.
I have used similar products to the screwfix one, so much better than those horrid polystyrene things from the 70's, hard to tell from plaster if well fitted.

 

[rules&rulers]

As mentioned by footprints (9's)

Key in any very clean/smooth bonding surfaces.Have a hammer and a few nails to support the cove on uneven wall/ceiling.

Use supercove tube adhesive,also sold by your named shop.