Measuring existing gutters 1.
How to measure for gutters on a house.
Measure the length of each gutter run.
Place the torpedo level on the roof with the level body sitting perpendicular to the roof peak.
Hold an extended tape measure at the end of the level that is.
Measuring gutter runs from a roof safely access the roof.
Run the tape measure from 1 corner of the gutter as far as you can go toward.
5 inch standard k style gutter shop 5 gutterbrush.
Then use the chart below to see what size gutter you need.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted.
To find the roof pitch hold a level against the roof until it is level then look at the middle of the level and measure upwards until you get to the roof.
5 inch 5 520 square feet.
The steeper a roof s pitch the more windblown rain it can collect.
Multiply length peak to eave by width to determine square footage.
Note places where two roofs form a valley which will affect runoff because water will come from two sides.
You need to multiply that drainage area by the roof pitch and the rainfall intensity.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
Find the width of the gutters.
How do you calculate gutter size.
Measure your gutter across the top from the back where the gutter meets the home to the outer edge.
Measure length of.
Measure the height of.
Adjust the level until it reads level.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
Secure twine on one end of run.
6 inch 7 960 square feet.
It can easily overwhelm your gutter capacity.
See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches.
This number will tell you your roof pitch.
Use a measuring tape to find the length of the twine from its end to the spot marked by the masking tape.
Write down those dimensions.
Locate the easiest point to access your roof.
Place a sturdy 20 ft 6 1 m ladder on 1 side of your house so that you can reach.
Using the tape measure go all the way around the house and write down the sizes that you will need.
Adjusting for pitch and rainfall.
Measure the roof to get the watershed area the area from which water will run off.
Remember to move the ladder as you go along the house that way you do not fall off the ladder when you are on it.
If the gutter turns an outside corner add the width of the gutter to the length measured do this twice if the gutter turns the corners at both ends.
