There's no denying the practical elements however there are issues. For one: https://www.sciencedirect.com/science/article/abs/pii/S0045653521015848 https://ww

There's no denying the practical elements however there are issues. For one: https://www.sciencedirect.com/science/article/abs/pii/S0045653521015848 https://www.sciencedirect.com/science/article/abs/pii/S00456... >before it's time to replace or renovate them after 25 years or so. And secondly that is short especially since the ceramic rooftiles that predated them could last 70.