i thought I'd throw somebody's link in here for fun. I follow them on FB. You might also want to follow them there.
Before my Great-grandfather changed it to Miller, his last name was also Muller (with two dots above the u). Maybe roofing is in my blood.
I noticed they use an underlayment with a batten/counterbatten system over it.
Not many Mexicans in Germany!
I wouldn't consider it spam if we can understand a word they are saying. Great Share!
Vickie