I live in an area prone to hurricanes and want to strengthen my roof. My house was built in the mid 1980s before local codes were updated after Hurricane Hugo. One solution would be to screw the roof decking to the rafters, but I am still five years away from needing to re-shingle my roof. Is there something I can do from the attic side? My roof is not insulated, the insulation is in the attic floor. Would applying a spray-on insulation to the underside of the roof have the added advantage of strengthening the attachment between the decking and rafters?