Shingles over rainscreen over Roxul
Any tips on installing shingles (cedar or fiber-cement) over a rain screen, which is installed over 1.5″ of exterior mineral wool? I was thinking vertical furring strips fastened to the studs, then horizontal furring strips on top of those to provide a shingle nail base. Sounds like a lot of extra work but the only other way I’ve seen (in one of Martin’s articles) is to install horizontal strips with dado cuts on the back, which sounds like even more work.
If I use 1×4 for both furring strips, then I think I’ll need to buck out windows by another 0.75″ as well; not hard just will take planning.
Any advice appreciated, thanks.