Depending on your situation (the grading around your house) the rain dispersal system could be very bad to use.
This system dumps the water very close to your foundation, where traditional systems usually carry the water away to a safe location.
In Texas where people water their foundations so they don't crack, this system might even be beneficial by keeping the ground around the house wet.
In places where the soil is clay and houses have a basement, you want the water as far away as possible.
In northern areas, ice buildup in the spring might rip that system apart.
I would stick with tryed & true systems.
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