Over night spray what's the best retarder ?

Mag

Active Member
its that time of year for the next day scratch has any one put a retarder in krend k1 spray ? if so what's the best one to use ?
 
I use Tardex but Parex reckon it does not re***d the set it re***ds the open time giving you more time to play with it.

Got a forein one coming so I will experiment. It is made for the ready mixed concrete industry so guess work how to dose it.
 
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