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How can I float new drywall that was top coated prematurely?
Came onto a job where the previous guys skimmed with topping before floating the walls. Since topping compound is extremely soft, has no glue and bad bonding properties and I need to float these walls, should I a) coat all the areas with that pink plaster bonding adhesive and continue with floating process , b) fiberglass mesh the whole wall and continue on c) sand the heck out of the whole thing down to the all purpose compound and continue, d) simply dust off the walls with a wet towel, prime and continue or e) ??
My concern is that in areas that require a heavy float (over 1/4"), there will be problems much sooner than later in terms of cracking, flaking, or detatching compound from the top coat.
I am allergic to doing more work than I have to but am compelled to do the right thing. . .