Handyman
How do I know if a loose deck board is a simple fix or a bigger problem?
What’s likely going on
A board that's loose but firm and dry underneath is usually just a matter of the fasteners having worked free. A board that feels soft, spongy, or discolored underneath is a sign of rot — and rot rarely stays contained to just one board.
Is this a DIY job or worth calling someone?
Re-securing a loose-but-solid board is a reasonable DIY fix. Any softness or rot is worth having someone check further — it can mean the support structure underneath needs attention too, not just the visible board.
Not sure, or ready to have someone take care of it?