How can I tell whether a floor joist has been weakened by moisture?
Soft or crumbling timber, staining, fungal growth, a musty smell or a noticeable change in floor movement can be warning signs, but none alone confirms the extent or cause of damage. Check for ongoing leaks, damp walls and poor subfloor ventilation, since repairs to timber may need to be coordinated with addressing moisture. A structural assessment is needed before deciding whether a joist can be repaired or requires replacement. Read about timber treatment for related timber concerns.
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