If the new scim is olished, you should either roughen up the surface with coarse sandpaper or prime with a suitable primer - NOT PVA.
Contact BAL or Ardex, and they will recommend a suitable primer.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local