I was thinking of three options, but I see problems with them:
1) Use durabond to cover the small sections of exposed brick, and then easy sand. But I am pretty sure durabond is not meant to be used as the first coat of a "replastering" and applied directly to brick.
2) Use mortar / cement on top of the exposed brick and then durabond or easy sand. If water were to infiltrate again, the mortar won’t degrade. But the instructions for the durabond / easy sand state to "wait 60 days over new concrete." I cannot wait more than overnight at most.
3) use structo-lite, which is base coat plaster — the closest to the original product. I know at can then use durabond and finish with easy sand the day after. But the structo lite is gypsum based, and there could be new water infiltration in the future, and I am concerned the structolite will again degrade.
I need to buy the material tomorrow morning and apply whatever I need to apply over the brick before noon. What should I use??
(Ps: the old base coat is grey, not brown. can it be old plaster base coat? or is it old mortar?)