Good Morning
Thank you for your enquiry.
As Raincheck ECO Water Seal is a water repellent as opposed to a waterproofer, we cannot recommend that this product is used for this type of application.
Apologies that I can be of no further assistance in this instance, however if you do have further questions please contact us on 01403 210204 or via email at [email protected].
Kind regards
Jack
Safeguard Europe Ltd.
Would this be safe to use to waterproof a concrete birdbath?