Top-Notch Drywall Repair Contractors & More In Nassau County, NY County. Forget DIY; the specialist contractors of PatchitUP serving Nassau County will save you the hassle of dealing with your Drywall and sheetrock Repairs, Plaster Repairs, Seamless Paint Matching, and more. Don’t risk it by relying on inexperienced handymen to do the work for cheap; our experienced, constantly-trained staff will do it right the first time.