I live in NC with clay soil. A problem area for me is under my deck
where the soil NEVER seems to drain. I've removed the mulch installed
by the builder. :-( to try and help to no avail. I don't want the deck
supports to prematurely rot out from underneath us!

Is it possible/adviseable to install a membrane/barrier on top of the
soil to only permit evaporation and no further water uptake?

Could/should I also add crushed rock to assist in draining the water
away from this area?


Rob