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What it is: The wood flooring
becomes separated from the subfloor. It usually is accompanied by cupping
and swelling.
Cause:
Moisture caused by:
- Excessive job-site moisture
- A house left vacant with no ventilation
- Grade conditions
- Pipe leaks
- A wet slab
Excessive moisture always is the main cause of buckling. Factors that
may aggravate the problem include these improper installation techniques:
- For nail-down products, inadequate nailing, incorrect fasteners, incorrect
subfloor construction.
- For glue-down products, incorrect adhesive, insufficient adhesive, the
wrong trowel, inadequate adhesive transfer (due to over-flashing or not
rolling the floor), subfloor separation or subfloor contamination.
- In adequate expansion space left by the installer.
Cure:
Fix the excessive-moisture condition and allow the floor to dry to normal
levels. Spot repair/replacement, reinstallation, renailing and refinishing
are some options. In most cases where the floor has loosened from the
subfloor throughout the installation, reinstallation or replacement is
necessary.
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