A few years ago, I bought a bag of mortar mix to make some small repairs around the house.
After using a small amount, I stored the bag on a shelf in my garage over the winter. The bag never came in contact with my cement garage floor. I used some the next spring, only to discover it went bad. It mixed and applied as usual, but when cured, it just rubbed off with my finger.
So last spring, I bought another bag, and again I used a small amount. But this time time after opening the bag, I poured the remaining mix into a clean and dry 5 gallon plastic bucket with a tight lid. This time I stored it in my basement over the winter (heated).
I just mixed another small batch, only to discover it has gone bad again. It was not clumped together it seemed the same as when it was in the bag It never got hard or anything like that. Is mortar that sensitive? I didn't notice an expiration date. What can I do to make it last longer ?
Please help me to understand about mortar mix.
Thanks Mike