Wet rot thrives in timber higher than the optimum of dry rot and therefore is often found where the wood is repeatedly wetted for instance where there are leaking water outlets or where there is poor protective detailing. Poor drainage and guttering can lead to exterior timber, window sills for example, becoming saturated over time and thus leading to wet rot.
RICS registered building surveyors know the signs and will help identify where wet rot is, or may become a problem.