Ours is installed at the peak of the roof and draining to both sides metal roof no.
Running a hose over the roof.
Turn the water on before you bring the hose onto the roof.
Vent pipes provide this air by running outside the structure of the house.
Remove the vent cover with the screwdriver and set it.
The hose should be fitted with a nozzle set to its most powerful spray function.
Use a power hose to blow out the leaves and dirt.
The photo at the top of the page is one example of a upper gutter draining into a lower one neatly coming down tucked around the side wall and not calling attention to itself.
This will save time and leave less of a mess than using a hose.
Use a soak n spray hose it puts out lots of very small streams down the length of the hose.
Running a vent pipe out of the roof takes some careful preparation.
This also helps to clean the caked up dirt along the inside and outside of the gutter.