Flat Roof Gutter Size Calculator

Northclad gutter size requirement calculator this calculator uses current data to calculate the required size of gutter as well as number and size of downspouts based on your input.

Flat roof gutter size calculator.

We recommend using this calculator as a basic tool to begin determining the requirements for your drainage system however all information should be verified by. 5 inch 5 520 square feet. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Downpipe and eaves gutter calculator valley gutters generic rain water outlets for flat roofs.

The total rainfall and how rapidly it falls will affect the runoff from the roof. As most roofs are not flat this needs to be calculated we ll show you a simple way. The area that your chosen guttering system can cope with. The effective roof area that will collect the rain which will need to be removed by the guttering.

An inch of rain is not much but it if falls in half an hour it could flood a gutter. And reduction in down pipe size by using a funnel section. 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 square footage.

5 inch 5 520 square feet. Water pipe size calculator information video water pipe. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. The simple way to calculate gutter sizes.

There are two things you need to know. 6 inch 7 960 square feet. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Total roof area also affects runoff.

Requires flow to be calculated in one of the other calculators.