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Question DetailsAsked on 12/27/2017

How deal with accidental tub flood in bathroom

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1 Answer


Below are some previous very similar questions with answers - basically one-time wetting will not hurt most stone or tile floors if mopped up and then you run a fan in the room to circulate air and dry it out within a day or two to prevent mildew/mold growth.

Hardwood floors sometimes can behave OK if dried out fairly quickly, other times they warp to the point of being junk. Sheet flooring ditto. Laminates and carpeting, especially if it has a padding under it, generally have to come out because the water in underneath does not dry out fast enough to avoid mold growth and water damage.

Sometimes carpet with a backing and padding which will dry out can be salvaged in place then restretched - but usually requires contractor-sized ventilation equipment (rented or Water and Smoke Damage contractor) to get it done before mold sets in.

Not universally, but IF the excess water is drained out by punching a hole or two in the underlying ceiling drywall (at leak points if any, otherwise usually at center of room due to joist sag) then the subfloor will dry out by itself. In humid or hot conditions I run a large airflow shop vac in there for a shift or more to ventilate it - pulling the air out through the hose stuck in a hole in the ceiling (which is later patched) to force airflow through the subfloor. If bottom floor tub, concrete slab on grade foundation will normally not be damaged by a one-time flooding like that.

Answered 2 years ago by LCD

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