cistern & roof
We are planning to harvest rainwater from the roof of the house we are building. We'll probably have three cisterns. Initially we were going to use a standing seam metal roof, but the cost is considerably more than a composition roof. Are any of you familiar with rainwater harvesting and roof selection? In the Texas Rainwater Harvesting Guide it does not recommend composition roofs, although people around here seem to use them with cistern water.
Is anyone else doing this? Do you have any suggestions for us?