As an ex framer (and roofer for that matter), I would advise against it. I have seen hammer heads break and it is not pretty. I would recommend either a drywall or roofing hammer as they are already a type of hatchet. Some framing hammers also have an axe blade (rigging axe is what we called 'em), but they are considerably heavier than the roofing and drywall types. Mine was 28 oz. whereas my roofing hammer was 22 iirc. Anyways, just my 2 cents since I have considerable experience with these tools.