Project sunroof is a solar calculator from google that helps you map your roof s solar savings potential.
Estimate roof size google maps.
The first thing you need to do is download and install google earth pro.
You can only do this on its website though as the app doesn t support it yet.
These instructions only apply to the new google earth.
Keep in mind that using google earth isn t going to give you a 100 percent accurate reading but it will give you a basic idea of the size of the roof for your calculations for the roofing materials.
When you have eliminated the javascript whatever remains must be an empty page.
Go to google maps.
You can also measure the size of polygons that you draw in google earth.
Enable javascript to see google maps.
Find local businesses view maps and get driving directions in google maps.
Don t use this as your only method of measuring.
After measuring the area of the footprint you can estimate the actual roof area based on the angle of the roof.
Google earth pro was the paid version of google earth it used to cost 400 a year but it s free now.
And even flat roofs usually have a little bit of a slope so you might want to use a roof pitch multiplier once you have your area figured out 1.
Measurements may not be 100 accurate especially in areas with 3d terrain and buildings.
Quick video on how to use google maps to measure area and viewing properties for estimating.
Measurements don t account for changes in elevation.
Similarly if you using the area calculator tool to measure a roof with multiple levels you should do the individual section separately.
Google maps has more uses other than just providing you with general directions.
Just use it as a starting point and you ll have a fairly basic idea of what you re dealing.
The google maps area calculator is not 100 accurate.
While it is possible to estimate the amount of necessary materials using only the total roof area measurement as can be seen from the table depending how large the pitch of the roof the actual area of the roof can differ by up to 2 236 from the measured total area at a pitch of 24 12.