In 30 years how many times will you have to redo your roof I think one of Tesla solar roofs points was that many houses in the US have to reshingle. Although I still don't think it might be worth it for you.
Please don't seriously suggest Tesla's solar roof will last the lifetime of a house to people.
The real warranty is 30 years for power and weatherization.
Its misleading marketing speak (at best).
https://www.tesla.com/solarroof#order
> Weatherization means that there will be no water leaks or other weather intrusions during the 30 year warranty period that result from our installation.
It will almost certainly require replacing and/or serious repair long before the "lifetime of the house" is up.