Flooring and Tiling Quality Prep Checklist

What a good one includes

• A precise subfloor deflection and flatness standard, detailing the exact measurements required (like 1/8 inch over 10 feet) for your specific material.
• Mandatory moisture testing protocols, specifying acceptable relative humidity percentages and calcium chloride test limits for concrete and wood.
• An adhesive and primer compatibility grid to ensure your bonding agents chemically align with both the substrate and the backing material.
• Clear layout planning directives, requiring a dry-lay verification to prevent awkward sliver cuts at walls, doorways, and transitions.
• An expansion and movement joint mapping tool to define exactly where relief joints must be preserved through the tile or flooring surface.
• An environmental log section to record ambient site temperature, subfloor temperature, and relative humidity prior to and during adhesive curing.

Common mistakes to avoid

• Relying on a visual inspection of the subfloor instead of using a true 10-foot straightedge to measure flatness tolerances.
• Skipping moisture testing on older concrete slabs under the assumption that they are fully cured and dry.
• Neglecting to align expansion joints in the tile layout with the existing control joints in the concrete substrate below.
• Failing to document pre-existing subfloor damage or deflection issues prior to starting, leaving you liable for structural settling.

Frequently asked questions