stay away, leave wood to a pro. getting water under the wood will be a expensive mistake. The wood will buckle, check and warp. Its most likely glued and that h20 will make is smell like hell. Make a transition between the concrete and wood. maybe duct tape a heavy mil plastic or vinyl shower paneling. But if you do tackle it the hand spray or misting with a pump up sprayer would be it. The top of flooring can handle h20 but when it gets between the T&g problems happen. The wood will absorb h20 then expand which leads to checking, buckling, cupping, warping and glue fracture. The concrete also absorbs h20 with no where to go but up between the wood, concrete and glue leading to 3 different substrates expanding a different rates. What ever you do don't flood it with any puddling. work small sections scrubbing and elbow grease. After scrubbing it renting a quality carpet cleaning machine with a strong vacuum and wand. 1 mist a solution on manageable section just so there's minimal h20 seepage into the flooring boards. 2- hand scrub or brush 3- carpet machine with very low flow extremely low pressure rinse or apply rinse with a pump up sprayer... remember its not decking which can breath. Even decking rot starts between the joists and decking where the decking edge faces the house because drainage slope.