you all have been really great btw in answers in the past. much appreciated.
california cedar shake to replace, on 50% 1x4 (skip sheath) bats. i knoooooooooooow im supposed to use osb just sheesh its gone up. is there any worth to the idea of using 1x3’s in skips to complete the deck? it would leave 1/4 inch spaces, i know its not code. but it would make a pretty good deck, and it used to be ok 15 years ago here to do it that way. do the gaps create too much movement and wrinkles in the shingle? if i use two layers 30#? pro’s and con’s? yes, im cheap and the cost difference is whispering to me.