How did you manage to lift it?
For the window, I constructed a giant ramp out of 2x4's and sheet material and pulled it up with some rope with a helper. It was not easy.
The Rubber I unwrapped it so it was a roll which I was able to carry one end up a ladder and placed it on the roof, then bit by bit drag the rest up.
I don't like to hire things, right or wrong if I can get something done with what I have on hand that's generally what I do.
Aka I'm cheap.