I lapped cedar siding over Roxul ComfortBoard
In our area, I have seen a siding detail where they use horizontal 1×4 cedar boards with something like a quarter inch gap between the boards. They don’t look like ship lap. I am assuming that they have been fastened directly to the rain screen.
However, I wanted to install 1.5 inch Roxul ComfortBoard on top of the WRB and then the rainscreen. I guess my concern is that this siding style is not a water shedding design.
Does anyone have any experience with this siding style over exterior insulation.
Or have any suggestions on how it could be done?
This is not for the whole house, just to create a feature on a few areas.
I live in coastal BC.
Should I put lapped tar paper over the rainscreen before the cedar siding?
Poly vapour barrier
Roxul batt insulation
Roxul ComfortBatt, R6
.75 inch rainscreen