I think the weatherization is under the tiles. I'm not sure what they'll be doing, but I imagine there will be forms of some kind under the tiles to cope with wiring concerns and alignment, and there will be weather protection underneath those forms. Some of the weather sealing will fail, same as the tar/sheeting does on conventional roofing. The tiles should still be good, so the main cost after 30y should be labor to re-seat and re-seal, and the optional replacement of any failed solar tiles.

A 30 year power warranty is mighty brave seeing as how they've got essentially 0 years of data to base their projections on.

The tiles are proof against weather: if you saw the reveal video they dropped a heavy object on a tile without damaging it. Given that, offering a warranty against weather damage is basically free to Tesla, modulo manufacturing defects.

And unless you live in a forest, or in tornado alley, having an anti-weather warranty for your roof is worthless. Most roof problems are caused by mistakes in installation, not because the tiles don't last as long as they are expected to.

> Nevertheless, a 30 year warranty is still pretty impressive and even more so if it covers normal wear and tear from weather.

If Tesla is around in 30 years. Remember that Tesla was going to go bankrupt 9 years ago before government bailout. And warranties can become worthless when companies go bankrupt.

You know that this was not a bailout, it was a loan, which was paid back 9 years early and with interest. I do not believe this load was the only way for Tesla to survive (I'm sure Elon Musk would have found other ways). It is out of question, though, that this loan was a big help for Tesla