[villagetinker]

Originally Posted by mcclarja

It's easy enough to make a path for water to get under or through the screen sill. But, if your terrain around the enclosure isn't sloped and drained properly, you'll still collect water because it has no place to go.

I have this problem. I built a small french drain to allow water to pass to the yard drain. It worked briefly, but it is easily overwhelmed when any real rain falls. So, the next step is to install a drain and pipe and connect to the yard drain. I contacted a landscaper or two for quotes, which came back in the $5k range. Ouch!

I believe I have seen porous drain pipe, this usually is used to allow water to escape, but you MIGHT be able to use it in reverse. I would check with ACE hardware to see what that might have. Since you have a French already, you might be able to dig up your stone, install the porous pipe and get enough flow to limit your problem. Then rout this to a suitable drainage area in your yard.