I used seam sealing tape (don't have the name until I get home) it's about 4" wide. I cut pieces for each foot and put that on the roof first. Then I laid the panels (four 100w panels) on each pad and put two screws in each of the legs. It's supprising what wind can do. Then of course I put dicor over all that. I drilled a hole through the roof into the center of a wall (I must have measured a dozen times) and hit it perfectly, and put went to the floor next (also measured a dozen times) putting the controller in with the inverter. The remote I ran back to the wall where all the other remotes are. Took from 8 in the morning to about 4 in the afternoon.