Thankyou @Dave-1and @EricL .. So i use the sealer on top of the expansion tape?

I seem to be getting a tad confused here.. response to last message. 1. The wall with the water damage is 'inside' the garage.. the wall 'outside' is ...

Hi Eric, Dave and JacobZ, thankyou for your advice and recommendations regarding what product to use outside the wall area. I will get organised asap. ...

thanks Dave, have posted some more pictures from outside.. . Due to renovating the garage, there is a lot of stuff that is not normally present in the ...