For all of our roof projects we recommend that our clients have all of the nails and screws re-tightened or in some cases, replace all rusty nails and screws. The reason for this is that if any nails are not “grabbing” onto the roof structure then they will weaken the structure and cause further problems later down the track. As a standard inclusion of a full restoration service, DeGroots will pull out and replace any unfit screws with new roofing screws.