Adjusting for pitch and rainfall.
How to measure for gutters on a house.
6 inch 7 960 square feet.
Note places where two roofs form a valley which will affect runoff because water will come from two sides.
Once you are safely on the roof move carefully to one end of the gutter run.
Measure your gutter across the top from the back where the gutter meets the home to the outer edge.
This number will tell you your roof pitch.
Run the tape measure from 1 corner of the gutter as far as you can go toward.
Adjust the level until it reads level.
Multiply length peak to eave by width to determine square footage.
The steeper a roof s pitch the more windblown rain it can collect.
Write down those dimensions.
Place the torpedo level on the roof with the level body sitting perpendicular to the roof peak.
How do you calculate gutter size.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
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.
Locate the easiest point to access your roof.
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.
Hold an extended tape measure at the end of the level that is.
Measure the roof to get the watershed area the area from which water will run off.
See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches.
Keep in mind that some homes will provide roof.
5 inch 5 520 square feet.
Use a measuring tape to find the length of the twine from its end to the spot marked by the masking tape.
Then use the chart below to see what size gutter you need.
Measure length of.
Place a sturdy 20 ft 6 1 m ladder on 1 side of your house so that you can reach.
Find the width of the gutters.
Secure twine on one end of run.
Measuring gutter runs from a roof safely access the roof.
Measure the length of each gutter run.
Measuring existing gutters 1.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
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.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted.
It can easily overwhelm your gutter capacity.
You need to multiply that drainage area by the roof pitch and the rainfall intensity.
Using the tape measure go all the way around the house and write down the sizes that you will need.
