Rainscreen for vertical cedar siding?
My builder is concerned about all the trim around my remodel due to my wish for 4″ tongue-and-groove western red cedar (WRC) vertical siding. I will be mixing things up with about 1/3 of the outside coverage with WRC shingles so the product depth is not an issue.
The old (beautiful) fir T*G 1×8 sheathing is still intact but now covered with Henry Blueskin 100 as a WRB. I was planning on using Home Slicker over this, and then the vertical siding and shingles for the final. My carpenter is worried that the 3/4″ T&G cedar plus the 1/4″ or 6mm Home Slicker will make all the trim non-standard. He would like to use full 1″ or (5/4 PVC trim) and cut a 1/4″ channel to tuck the vertical siding in to prevent water. I live on the ocean (Newburyport, MA) and wind-driven rain is always happening. Thus he does not want the full 1/4″ Home Slicker.
My question is can I step down to Hyrdogap (1mm) or another thinner rainscreen? They seem to think this will work over the Blueskin. Note the T&G cedar is really 5/8″ and not 3/4″ but still, the combo pushes about 7/8″, which make the 5/4 trim almost impossible without shimming out all the windows and trim to accommodate.
Thoughts on another rainscreen option?