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.