Chapter 8 | Concrete Subfloor – Gaylord Flooring

Chapter 8 | Concrete Subfloor

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    1. Subfloor Must Be Level
    2. Ensure the concrete slab is flat, with the tolerance being 3/16” over 10’.
    3. If the slab is out of specification, consider grinding, floating or both. Many high spots can be removed by grinding; depressions can be filled with approved patching compounds; and slabs can also be flattened using self-levelling concrete products.
    4. When sanding or grinding concrete, be sure to wear a mask. Apply water to the floor before sanding to limit dust.
    5. Subfloor Must Be Dry: Refer to Chapter 6 (Moisture Testing) 

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