How Thick an RV Pad Should Be
HomeGuide's driveway guide recommends 5 to 6 inches of concrete for RVs and heavy vehicles, compared with 4 inches for everyday cars, plus thickened edges of 6 to 8 inches where tires roll on and off. A motorhome or a loaded fifth-wheel sits in one place for months, so the base under it matters as much as the concrete. We dig out soft topsoil, compact a gravel base and reinforce the slab before it's poured.



