Will Wood Rot If It Gets Wet?

Wood rot can and will start when the moisture content of the wood reaches 20 percent. ... The wood needs to remain damp and wet all the time for wood rot to advance. It's much more likely that you'll start to see mold growth in as little as 48 hours as mold spores are everywhere on your home construction site.

How long does it take for wood to rot from water?

Wood can Start to Rot in 1-3 Years If:

Wood collects water on a frequent basis (from rainfall, leak in plumbing pipes, or sprinklers) Wood is left uncleaned (applies to wood on the exterior which includes siding, structural posts on a patio, fascia, soffit, or fencing)

Can untreated wood be left in the rain?

Normal rainwater will not harm the wood that is used to build homes. Many homeowners fear that wood will immediately rot if allowed to get wet. That's simply not the case. The only thing that doesn't fare well if it gets wet is low-grade OSB.