Revisions log for Answer #159
This is the answer to the question What to seal the screed measurement site with? And is it necessary?
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2022‑05‑05 16:58
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You can buy small containers of cementitious repair compound at the hardware store. There may still be a small amount of putty left in the layer of flooring you trust. Mix this with a little water so that the mortar can still be well distributed, and then squeeze some of the mortar into the hole and sharply pull the remainder across the surface of the screed.
If there are "bumps": sand off with coarse sandpaper, vacuum.