The valleys should be an 1.5" open . If you leave them that tight debris builds up and wont let water flow causing leaks. No matter if you use water and ice.. you forgot to mention what measurements you snap your lines at
you do such great and clean work. I would love to see a more detailed video of you doing around a chimney. showing how you do the flashing and counter flashing. I'm in Canada and a roofer of over 20 years with shingles. we don't have much clay tiles up here.
