Summary: Learn how to apply a self-levelling compound to a concrete floor.
If you want to fit any form of floor covering to a concrete floor with a rough surface, the only practical subfloor is a self-levelling compound. This is a latex-based compound that provides a very smooth finish but, despite its name, it will need some degree of levelling with a plastering trowel. Laying this form of subfloor will raise the floor slightly, so the bottom of any doors opening into the room may need to be trimmed.
Starting at a corner, smooth the plaster evenly over the floor.
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