I am planning on installing flangeless windows flush with exterior sheathing and wondering how to detail the sill. If I create a sloped sill with a piece beveled siding or equivalent the window won’t bear fully on the base as the slope is beneath the bottom frame of the window. Is this acceptable practice? I have the  great article detailing the install of flangeless windows as “inbetween” but those rest squarely on the backdam with the slope sill outward on the window.

thanks
Brian