The deeper answer
What changes the decision.
Siding is not a sealed bathtub wall. Joints, laps, corners, and openings can admit small amounts of wind-driven rain. A WRB provides the drainage plane behind the cladding. It must be continuous, lapped so upper sheets drain over lower sheets, and integrated with flashing at every window, door, penetration, and roof-to-wall transition.
The word ‘breathable’ is easy to misunderstand. A proper WRB resists bulk liquid water while allowing water vapor to move through the assembly. That helps incidental moisture dry instead of remaining trapped against wood sheathing. The product's perm rating and the rest of the wall assembly matter, but the first job is still directing rain outside.
Installation is more important than the logo on the roll. Reverse laps, missing tape, cuts around utilities, and flashing tucked behind instead of over the WRB can defeat the system. Ask how the crew will handle window heads, electrical boxes, hose bibs, meters, lights, decks, and roof intersections.
SJCC includes house-wrap in the base scope because it is not an optional visual upgrade. It is part of the wall. Ask at your free in-home estimate about upgrading to perm-rated DuPont Tyvek CommercialWrap.