How Long Does It Take To Paint A Small Living Room . Keep young children and individuals with breathing problems from freshly painted rooms. Revamp plastic storage drawer units with spray paint a standard 13.38m² room will require a paint drying time of approximately six hours. 50 Charming Cheerful Colors for Living Room Design Paint from www.pinterest.com House and it took them longer than than just to install the drywall. Begin by taping off anything you don't want to get paint on, such as baseboards and window trim. Dispose of the used painter’s tape.