This is interesting because I was talking to a guy last night, and he had slid a piece of PVC fencing rail between the awning and the slide-out.  It was just tall enough to make a tent sort of, and shed off all the water.

My explanation of what I have tried already wasn't clear, I guess. The "PVC pipe on stilts" was like the "tent" you have suggested. All it did was cause 2 puddles, one on each side of the peak of the tent. I may not have had the tent peak tall enough. I will try to raise the tent height and see what happens next time it rains.

Thanks for the suggestions and I'll let you know what happens next time it rains.

Hi!

I had the same problem on our American Tradition and was able to solve the problem.  My awning was a Carfree canvas  awning and was 18 feet long.  You haven't said whether your slide out cover is vinyl or canvas but I'll bet it is a canvas material.  If it is, these canvas materials can lose a little of their ability to shed water just like the old tarpolin tents did.  The loss of repellant ability causes the water to soak into the cloth making the cloth itself heavier.  The heavy cloth sags of its own weight temperarily bending the awning roller tube in at the center creating the pools or making them worse.  The repellant abitlity of the canvas can be restored quite easily with a can of Scotch Guard water repellant or other suitable spray.  There are several commercially available.  One should clean the canvas first with soap and water to remove any residual dirt.  A dirty canvas will hold water too.  Once the canvas is clean, spray it heavily with the repellant spray.  Of course you must have a dry canvas to apply the repellant spray and several coats won't hurt a thing.  This won't stop the awning from pooling if it mounted too flat or is too lose but it will help repel the water if the PVC pipe ridge is used.

An alternative might be to look at raising the awning rail which attaches the awning to the body of the coach.  This would give the awning move slope aiding in water drainage.  That may not be possible on you coach but it is an idea that you could check on.  I wouldn't remove the old rail though.  I would add a new one above the old one.  Removing the old rail and moving it might create some leaks.  Good luck.

I used to blow up balloons, and put them under mine, the sausage shaped ones, and keep the strings long, so that I could retrieve them.  Penny, TX

I have a slideout topper that collects water as well. My question is will it hurt anything? Thanks

Thanks Barb. I've done the same. Wasn't sure if the weight of the water would hurt the slideout when you let it in or not.

One thing I've noticed on some rigs is a roller support on the longer covers. Ours doesn't have one, and there seems to be a fair amount of deflection in the roller tube. Would that be a worthwhile investment?