Windshield Install Dificulty

[72step]

I need to install the windshield back onto my 65 C10. Now I know you need to place the new rubber windshield weatherstrip in the sun first then install it onto the windshield then put it on there and run a 1/4" rope from the bottom and as you pull the glass goes on but do you need to also use some sort of sealant? If you do then I need to research no further and call a glass shop because I will make a freaking mess. Thanks...