Oops I’ve cocked up! Advice please?

[Al Getaroundtuit]

I’ve just realised that I’ve been a total numpty and have forgotten the mechanical fixings for the Prowarm boards on the floor of my shower/wet room!
I’ve stuck the boards down with Mapei Keraquick S1 adhesive (after acrylic primer on sub floor) and taped all the joints with the tape and jointing compound. If I now screw the fixings in can I just retape with another layer?
Thanks.

 

[GoneGuy]

Yes, tape over the screw heads /washers

 

[Wayne Brown]

Yes as above tape over the fixings and seal with waterproof ing compound . Kop

 

[Al Getaroundtuit]

Thanks that’s a relief!