Rainwater Calculator | Guttercrest

Step 1 - Set the Rainfall Intensity

Instructions

Click on a region on the map to open a larger map, then click on the place name closest to the location of the project.

Place External Internal

Building Life Years
1.5 (Cat2) 4.5 (Cat3)

Rainfall (l/s/m2)

Step 2 - Enter Roof Details

Length (m) Width (m) Additional Area (sq m) Roof Pitch Roof Height
Angle (degrees)
Area (sq m)

Step 3 - Enter Gutter Details

Gutter Length (m) Number of Outlets End Center

Even Spacing Irregular Spacing

Leaf guard Corner Between Outlets

Largest spacing (m)

Step 4 - Select the Gutter and Outlet

Half Round Beaded Deep Flow Victorian Ogee Moulded Ogee Bullnose

Box Shaped Box Raked Box Custom Valley Custom Parapet

Throat Width (mm) Sole Width (mm) Depth (mm)

Circular Outlet Rectangular Outlet

A proposed gutter design will be displayed here when all data has been entered.