use of fast concrete repair?

I used Fast Concrete Repair to fix a piece of stone on wall which fell out . as per instruction, apply slurry of Fast Concrete Repair as coating on piece of stone,then mixing addtional slurry with motar to apply as second one, but first step Fast Concrete Repair coating could not STICK onto wall and stone piece, what is my problem? I had to use the mixture of concrete repair and motar only, could not do COATING. thank u for your help.

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  • Anonymous
    6 years ago

    the aggregate in premixed concrete would be too large for setting stones, you need a stone mortar mix, it won't have any rocks in it

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