Hi all,
I am not sure if this is the right place to ask this but we had a plumber doing some work and he left a hole in the floor. We are happy to fill it in but we are not sure what to use. There is the rubber water pipe connected to the copper one. We are worried about the connection deteriorating under the concrete. Please see the pictures. Any advice on what to use to seal this would be appreciated.
Many thanks,
Lydia