Could be wrong, but pretty sure the person above means that the problem is rain/moisture too soon after it is applied. Not rain/moisture in general. The product needs to remain dry until it’s fully cured, otherwise the excess moisture will cause it to stay malleable/messy.
xo-laur t1_iyagota wrote
Reply to comment by RoarBacon in Used mastic to repair holes in front steps, eternally sticky and causing a mess now by RoarBacon
Could be wrong, but pretty sure the person above means that the problem is rain/moisture too soon after it is applied. Not rain/moisture in general. The product needs to remain dry until it’s fully cured, otherwise the excess moisture will cause it to stay malleable/messy.