The number one reason why you should call in experts if you have a damaged drywall is to maintain the peace of your house. Yes, any DIY project creates some amount of stress in the house. But, on a more serious note, here are 4 specific reasons why you should call in professionals for drywall repair.There is no substitute to experience, and with it comes the exposure and expertise of repairing the drywall, no matter how bad the damage is. DIY enthusiasts, or individuals and companies who don’t have sufficient experience and expertise of repairing the drywall could spoil your project and increase its total cost, whereas professionals do their job to perfection.