I like the downspout material extended four or five feet and screwed on says reggie marston president of residential equity management home inspections in springfield va.
How to slope a gutter with false bottom.
The gutter should have a quarter inch of slope per 10 feet.
Next place a ladder at the left side of the house and measure from the roof down to the gutter.
The best way to calculate the slope of a gutter run before hanging it is to use a long string and a string level.
They re inexpensive and easy to install.
Ask someone to hold the gutter while you loosen and remove the gutter brackets or hangers.
Less than 20.
Measure carefully to determine the best location for the outlet fitting.
Then set the fitting on the bottom of the gutter and trace around it.
Measure the length of the string to determine the distance between the two points.
If your fascia is fairly level you can usually measure off it to help you figure out how much slope you are putting on the gutter.
Then fasten one end of the string at the highest point of the gutter and the other at the spot where the downspout will be.
If you are using the brackets that screw on you will generally have a guy on each end to help hold the gutter while you are in the middle pushing up as high as you possibly can then set the screw.
This means that your gutter should be a half inch lower in height at every 10 foot mark until you reach the downspout.
To calculate gutter slope attach one end of a long piece of string to the highest point of your gutter and the other end at the location of your downspout.
For spans longer than 40 feet it s wise to have a downspout on each end and start the high spot of the gutter in the center.
First determine the location of each one of your downspouts.
Pull the gutter down about 3 quarters of an inch lower than it originally was.
Once the gutter is properly pitched re install the gutter brackets.
How to determine gutter slope.
Use a string level to ensure the string is completely parallel to the ground.
Cut a starter hole in the gutter with a chisel drill or sabre saw and nibble out the finished opening with tin snips.
The standard slope for rain gutters is half of an inch for every 10 feet.
Gutter extensions attached to the bottom of the downspout will discharge water well beyond the foundation.