Turn on a garden hose to its most powerful setting and run water through the drain pipe.
Bypass my in ground gutter drain.
Another quick tip when installing the underground gutter extension tubing is to use lots of perforated pipe once you re away from the house so the water can drain as it moves down the tube.
You can also hire a professional to tap into an underground drainage system if you have one installed on your.
Place the end of a plumber s auger also known as a snake into the underground.
Disconnect the gutter downspout from where it connects to the drain pipe.
Pull the underground drain which is often a black corrugated plastic pipe away from the end of the downspout.
Letting some of the water drain into the ground as it moves down the pipe keeps the total amount of water at the end lower which means less chance of.
Check to see if water and debris come out the other end of the pipe.
To do this i cut the black corrugated pipe added a t and aimed the pipe upwards to the downspout.
When leaves lay on the screens they create a flat mat of sticky debris which also aids to stop the water from entering the gutter and cause it to bypass the gutters altogether.
For the garage i used a downspout adapter without a leaf guard since there aren t trees close enough for that gutter to get clogged up.