PermaDesign Roofwater Calculator Help
Welcome to the PermaDesign Roofwater Calculator
Approximate the harvestable rain water runoff for your roof in 5 easy steps:
Step 1: Find your Property
- Enter the location of your site into the lookup box, autocomplete suggestions will be offered.
- Once the address is fully entered hit the Locate Site button.
- The map will zoom to your location and display a marker and a brief info window.
- Use the Pan and Zoom buttons on the map or your mouse to optimize your view.
Note: only sites within the Continental US are supported.
Step 2: Outline and Edit Surfaces
- Click the Draw button to begin outlining surfaces.
- Click on the map on a corner of the desired surface and an initial point will be drawn.
- Click on the additional corners of the building to trace the rest of the surface.
- To close the surface re-click the first point placed or double-click the last point while placing.
- Multiple surfaces can be outlined one after another.
- Switch to Edit mode to modify surfaces by dragging highlighted boxes.
- Each placed line will also contain a mid-point that can be dragged to generate new sides for the surface.
- While in edit mode the last change made can be undone by clicking the undo icon next to the modified point.
- You can also switch back and forth between Draw mode and Edit mode to add and edit additional surfaces.
Step 3: Review and Customize Results
- Surfaces can be given custom names by clicking on the surface name and renaming.
- The preferred units can be set either before or after drawing surfaces.
- Any unwanted surfaces can be deleted at any time by click the 'delete' icon in the surface list.
Step 4: Save Results
- You can print numerical results by clicking the "Print" button.
- It is also easy to take a screen shot and save your work.
- You can then email or print your results from that file.
- Share the tool on popular social media sites by clicking the relevant icon.
- You may be requested to log into your social media account.
1. Find your property ?
2. Outline surfaces ?
3. Manage surfaces ?
Select display units:
6. Learn more about roofwater
Enter an address...
Save report before entering another address...
Maximum number of surfaces, Draw disabled.
Only Continental US supported.
No location was found.
Usage exceeded, please try again tomorrow.
Access denied, please try again tomorrow.
Invalid query, please try again.
Unable to access map, please try again later.
No precipitation data.