You need to do this step first because an attached downspout makes removing the gutter more difficult and awkward.
How to remove aluminum gutters.
Rust residue dirt buildup and corrosion can all be removed by scrubbing the gutters clean.
Spray the baking surface completely so that the mold surfaces are saturated with hydrogen peroxide.
If the gutter is very long be cautious removing it.
Remove the elbow where it s attached to the drop outlet on the gutter and then the downspout assembly can easily be removed and placed out of your way.
Remove the downspout first.
Simple green makes a concentrated environmentally safe cleaner with good stain removing properties.
With the above safety procedures in mind use a power drill in reverse or a screwdriver to remove the screws underneath the roof or in the siding holding the gutter in place.
Now it is usually slipped completely out without damaging the gutter.
You can make a pry block from scrap 2 4 or 2 6.
Using a soft bristle brush scrub with one part bleach and four parts water solution.
These may require you to vigorously scrub or make take several attempts but it can all be removed.
Put the claw of 1 hammer on the head of the gutter nail then hit it with the other hammer when the nail is loose give it a firm follow through hit.
Finally wipe the surface to remove mold spores.
Pour 3 hydrogen peroxide into the spray.
You can also use a bleach spray like clorox with bleach.
Allow it to stay on the surface for 10 minutesuntil hydrogen peroxide kills the mold then wipe the surface to remove the mold and any stains it leaves.
To remove the nails all you need is two hammers and someone to catch the gutters.
Then simply place the block in the gutter and use your hammer or pry bar against it to pull out the nail and remove the ferrule.
Step 3 use an extended gutter brush to clean downspouts being sure to disconnect them carefully.
For aluminum try gutter zap which removes electrostatic bonded streaks with little scrubbing.
It might sound convenient but letting a large piece of gutter fall to the ground is unsafe.