scroller95969 wrote:
with the tax deductions I will be paying about 25-30% less for the system (15% self employment tax + 12-15% income tax savings).
1. Should I mount these larger panels with 4 or 6 mounting points? Would rather do 4 if the panel will support its own weight and will not tear through the roof. Plan to make them tilt for roof access.
2. I am thinking on using molly bolts or toggle bolts to lessen the chance of pullout from the roof.
There is a solar energy credit you can take.
I'd go for 6. Afaik there is more strain on the panels' mounting from wind when tilted, than when driving. I've used both moly and big screws on my rubber roof with plywood underneath. Both are fine after years.