Can Ergosun Solar Roof Tiles be used with Asphalt Shingles?

Can Ergosun Solar Roof Tiles be used to re-roof an existing home?

What is one of the Ergosun Solar Roof Tile is damaged or covered with debris?

Do I need to use specific qualified roofing contractors or electricians?

What colours does Ergosun come in?

How long does it take for delivery of Ergosun Solar Tiles?

Do I have to roof my entire home with Ergosun Tiles?