To check for a cleared line insert the garden hose down into the roof vent opening ask a helper on the ground to turn on the water and watch to see if water seems to be flowing freely into the main drain.
Running a garden hose over the roof.
A sun damaged tube can develop kinks and bulged areas that look like a snake swallowing an orange.
My dad always kept them under cover when not in use by placing them beneath a small disc shape platform.
Tie the top to the siding or fascia and the bottom to the siding so it can t slip out while you re on the ladder.
Slide a barbed drip to hose thread coupler with a 1 2 inch diameter into the end of the 1 2 inch diameter drip tubing that is closest to the water source.
If you re not comfortable performing any of these steps hiring a good licensed plumber could save you money in the long run.
Clogs are clear if you can run garden hose water from the roof to the ground below.
From there work in small sections to scoop up debris along gutters and downspouts then drop the waste into a bucket or onto a tarp below.
I got this working as follows.
Thread a 15 pounds per square inch psi.
1st floor hose bibb 4 1 hose adapter garden hose mpt adapter mpt sharkbite 90 degree elbow 14 foot run of 1 2 pex that goes through a 45 degree curve now vertical and then goes in rounded manner over the parapet wall supported only at the top and over to a sharkbite mpt female hose bibb.
Over time the ultra violet rays of the sun can also damage and disintegrate a garden hose.