Proper documentation is crucial for validating that an installation meets manufacturer specifications and warranty requirements. Keep copies of the original manufacturer's installation guides, technical data sheets, and any written correspondence regarding special requirements. It is also standard to document moisture readings, room temperature and relative humidity at the time of installation, and structural subfloor assessments. Photographic evidence of the installation steps, including waterproofing or backer board application, provides a permanent record of professional quality.

Ask an Expert