Mold under window?

[Courier 3.2]

I've found a black and white spots under plastic on play wood under window. Old stains of mold? See pictures attached. Going to buy Spray Mold Control as temporary solution and later to replace the play wood. Is this kind of mold looks toxic?.. Is it easy to replace playwood under window in fiberglass RV?

[Borrego Dave]

Originally Posted by Courier 3.2

I've found a black and white spots under plastic on play wood under window. Old stains of mold? See pictures attached. Going to buy Spray Mold Control as temporary solution and later to replace the play wood. Is this kind of mold looks toxic?.. Is it easy to replace playwood under window in fiberglass RV?

Replacing the plywood is kind of a bucket of worms. When you take off the damaged ply you may find other rot going on also. Being this is under the window tell us that the window is/has leaked and has to be addressed first to stop more water from getting in. Just guessing but if you can get behind the ply and soak it with a mold killer you may be good to go if the ply isn't rotting, soft spots. Others will be along soon with replies for you also.

[Roger C H]

The window sweating can cause a lot of water, too!